iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM D3768-11

(Test Method)

Standard Test Method for Microcellular Urethanes—Flexural Recovery

Standard Test Method for Microcellular Urethanes—Flexural Recovery

SIGNIFICANCE AND USE
This test method is used to indicate the ability of a material to recover after a 180° bend around a 12.7-mm (0.5-in.) diameter mandrel at room temperature.
Before proceeding with this test method, reference should be made to the specification of the material being tested. Any test specimen preparation, conditioning, or dimensions, or combination thereof, and testing parameters covered in the materials specification shall take precedence over those mentioned in these test methods. If there are no material specifications, then the default conditions apply.
Note 2—This test method is applicable to solid urethanes.
SCOPE
1.1 This test method covers the procedure and apparatus for measuring the flexural recovery of microcellular urethanes.
1.2 The values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—There is no known ISO equivalent to this standard.

General Information

Status
Historical
Publication Date
30-Nov-2011
ICS
83.100 - Cellular materials
Technical Committee
D20 - Plastics
Drafting Committee
D20.22 - Cellular Materials - Plastics and Elastomers
Current Stage
Ref Project

Relations

Replaces
ASTM D3768-06 - Standard Test Method for Microcellular Urethanes-Flexural Recovery
Effective Date
01-Dec-2011
Referred By
ASTM D3489-23 - Standard Test Methods for Microcellular Urethane Materials
Effective Date
01-Dec-2011

Buy Standard

ASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural RecoveryASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural Recovery
PreviousNext
Standard
ASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural Recovery
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview
REDLINE ASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural RecoveryREDLINE ASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural Recovery
PreviousNext
Standard
REDLINE ASTM D3768-11 - Standard Test Method for Microcellular Urethanes—Flexural Recovery
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3768 − 11
StandardTest Method for
1
Microcellular Urethanes—Flexural Recovery
This standard is issued under the fixed designation D3768; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
NOTE 2—This test method is applicable to solid urethanes.
1. Scope*
1.1 This test method covers the procedure and apparatus for
4. Apparatus
measuring the flexural recovery of microcellular urethanes.
4.1 Flexural Recovery Test Fixture—The test fixture shall
1.2 The values stated in SI units are to be regarded as
consist of a 12.7-mm diameter mandrel mounted to a base
standard.
equipped with a protractor. A drawing of a typical test fixture
1.3 This standard does not purport to address all of the
is shown in Fig. 1.
safety concerns, if any, associated with its use. It is the
4.2 Timer, capable of indicating seconds.
responsibility of the user of this standard to establish appro-
4.3 Thickness Indicator, accurate to 0.03 mm.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Test Specimens
NOTE 1—There is no known ISO equivalent to this standard.
5.1 The test specimens shall be cut from molded plaques or
2. Referenced Documents
parts. The recommended standard test specimen is 4 mm in
2
thickness, and the minimum specimen thickness shall not be
2.1 ASTM Standards:
less than 3 mm.The specimen shall be 25 mm in width by 150
D3040Practice for Preparing Precision Statements for Stan-
mm in length (1 by 6 in.).
dards Related to Rubber and Rubber Testing (Withdrawn
3
1987)
6. Conditioning
E691Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
6.1 Conditioning—Conditionthetestspecimensandthetest
fixture at 23 62°C (73.4 63.6°F) and 50 610% relative
3. Significance and Use
humidity for not less than 24 h prior to testing, unless
otherwise specified.
3.1 This test method is used to indicate the ability of a
material to recover after a 180° bend around a 12.7-mm
6.2 Test Conditions—Conduct tests in the standard labora-
(0.5-in.) diameter mandrel at room temperature.
tory atmosphere of 23 6 2°C (73.4 63.6°F) and 50 610%
3.2 Before proceeding with this test method, reference relative humidity, unless otherwise specified.
shouldbemadetothespecificationofthematerialbeingtested.
Anytestspecimenpreparation,conditioning,ordimensions,or 7. Procedure
combination thereof, and testing parameters covered in the
7.1 There shall be at least three recovery measurements.
materials specification shall take precedence over those men-
7.2 Measure the thickness of specimen to the nearest 0.03
tioned in these test methods. If there are no material
mm.
specifications, then the default conditions apply.
7.3 Insertthetestspecimeninthelowerslotofthespecimen
clamp and position the end of the specimen flush with the rear
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics
face of the bend mandrel. Tighten the clamp while holding the
and is the direct responsibility of Subcommittee D20.22 on Cellular Materials -
specimen in a horizontal position. (Do not allow the outer end
Plastics and Elastomers.
of the specimen to be in contact with the base of the test
Current edition approved Dec. 1, 2011. Published January 2012. Originally
approved in 1979. Last previous edition approved in 2006 as D3768-06. DOI:
fixture.) A spacer of approximately the same thickness as the
10.1520/D3768-11.
test specimen must be used in the upper slot to ensure proper
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
clamping in the lower slot. A specimen mounted in a test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on fixture at the start of a test is shown in Fig. 2.
the ASTM website.
3
7.4 Make an initial reading where the mandrel edge of the
The last approved version of this historical standard is referenced on
www.astm.org. specimen (the surface of the test specimen that is in contact
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3768 − 11
FIG. 3 Specimen Being Bent Around Mandrel
8. Calculation
8.1 The intercept of the mandrel edge of the specimen on
the protractor scale in degrees=φ.
8.2 The flexural set after 30 s is given by:
Flexural Set (30 s)=φ30 s−φ0 (see Note 3).
8.3 The flexural set after 300 s is given by:
Flexural Set (300 s)=φ300 s
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D3768–06 Designation:D3768–11
Standard Test Method for
1
Microcellular Urethanes—Flexural Recovery
This standard is issued under the fixed designation D3768; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the procedure and apparatus for measuring the flexural recovery of microcellular urethanes.
1.2 The values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1—There is no known ISO equivalent to this test method.standard.
2. Referenced Documents
2
2.1 ASTM Standards:
D3040 Practice for Preparing Precision Statements for Standards Related to Rubber and Rubber TestingTesting; Replaced by
D4483
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Significance and Use
3.1 Thistestmethodisusedtoindicatetheabilityofamaterialtorecoveraftera180°bendarounda12.7-mm(0.5-in.)diameter
mandrel at room temperature.
3.2 Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytest
specimen preparation, conditioning, or dimensions, or combination thereof, and testing parameters covered in the materials
specification shall take precedence over those mentioned in these test methods. If there are no material specifications, then the
default conditions apply.
NOTE 2—This test method is applicable to solid urethanes.
4. Apparatus
4.1 Flexural Recovery Test Fixture—The test fixture shall consist of a 12.7-mm diameter mandrel mounted to a base equipped
with a protractor. A drawing of a typical test fixture is shown in Fig. 1.
4.2 Timer, capable of indicating seconds.
4.3 Thickness Indicator, accurate to 0.03 mm.
5. Test Specimens
5.1The5.1 The test specimens shall be cut from molded plaques or parts. The recommended standard test specimen is 4 mm in
thickness, and the minimum specimen thickness shall not be less than 3 mm. The specimen shall be 25 mm in width by 150 mm
in length (1 by 6 in.).
6. Conditioning
6.1Unless otherwise specified, condition the specimens and fixtures a minimum of1hat23 6 2°C and 50 6 5% relative
humidity before testing.
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular Materials - Plastics
and Elastomers.
Current edition approved March 15, 2006. Published April 2006. Originally approved in 1979. Last previous edition approved in 2000 as D3768-96 (2000). DOI:
10.1520/D3768-06.
Current edition approved Dec. 1, 2011. Published January 2012. Originally approved in 1979. Last previous edition approved in 2006 as D3768-06. DOI:
10.1520/D3768-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3768–11
FIG. 1 Example Fixture for Flexural Recovery Test
6.1 Conditioning—Condition the test specimens and the test fixture at 23 62°C (73.4 63.6°F) and 50 610% relative
humidity for not less than 24 h prior to testing, unless otherwise specified.
6.2 Test Conditions—Conduct tests in the standard laboratory atmosphere of 23 6 2°C (73.4 63.6°F) and 50 610% relative
humidity, unless otherwise specified.
7. Procedure
7.1 There shall be at least three recovery measurements.
7.2Measure7.2 Measure the thickness of specimen to the nearest 0.03 mm.
7.3 Insert the test specimen in the lower slot of the specimen clamp and position the end of the specimen flush with the rear
face of the bend mandrel. Tighten the clamp while holding the specimen in a horizontal position. (Do not allow the outer end of
the specimen to be in contact with the base of the test fixture.)Aspacer of approximately the same thickness as the test specimen
m
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM D3489-23(Test Method)
Standard Test Methods for Microcellular Urethane Materials

SIGNIFICANCE AND USE
5.1 Tests made on materials herein prescribed have the potential to give considerable value in comparing physical properties of different materials, in controlling manufacturing processes, and as a basis for writing specifications.  
5.2 Before proceeding with these test methods, if appropriate, make reference to the specification associated with the material or product being tested. Any test specimen preparation, conditioning, dimensions, testing parameters, or combination thereof, covered in the ASTM materials or product specification shall take precedence over those mentioned in these test methods. If there are no relevant ASTM specifications, then the default conditions apply.
SCOPE
1.1 These test methods cover the preparation of a standard-size test sample and basic tests for physical property determinations of microcellular urethane materials.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D1621-16(2023)(Test Method)
Standard Test Method for Compressive Properties of Rigid Cellular Plastics

SIGNIFICANCE AND USE
4.1 This test method provides information regarding the behavior of cellular materials under compressive loads. Test data is obtained, and from a complete load-deformation curve it is possible to compute the compressive stress at any load (such as compressive stress at proportional-limit load or compressive strength at maximum load) and to compute the effective modulus of elasticity.  
4.2 Compression tests provide a standard method of obtaining data for research and development, quality control, acceptance or rejection under specifications, and special purposes. The tests cannot be considered significant for engineering design in applications differing widely from the load - time scale of the standard test. Such applications require additional tests such as impact, creep, and fatigue.  
4.3 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.
SCOPE
1.1 This test method describes a procedure for determining the compressive properties of rigid cellular materials, particularly expanded plastics.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This test method and ISO 844 are technically equivalent.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM D1623-17(2023)(Test Method)
Standard Test Method for Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics

ABSTRACT
This test method establishes standard procedure for determining the tensile and tensile adhesion properties of rigid cellular plastics in the form of test specimens of standard shape under defined conditions of temperature, humidity, and testing machine speed. Tensile properties shall be measured using any of three types of specimens: Type A shall be the preferred specimen in those cases where enough sample material exists to form the necessary specimen; Type B shall be the preferred specimen when only smaller specimens are available, as in sandwich panels, etc.; Type C shall be the preferred specimen for the determination of tensile adhesive properties of a cellular plastic to a substrate as in a sandwich panel or the bonding strength of a cellular plastic to a single substrate. This test method requires the use of the following apparatuses: a constant-rate-of-crosshead-movement type testing machine; self-aligning type grips for holding test specimens; an extension indicator; and a lathe specimen cutter.
SCOPE
1.1 This test method covers the determination of the tensile and tensile adhesion properties of rigid cellular materials in the form of test specimens of standard shape under defined conditions of temperature, humidity, and testing machine speed.  
1.2 Tensile properties shall be measured using any of three types of specimens:  
1.2.1 Type A shall be the preferred specimen in those cases where enough sample material exists to form the necessary specimen.  
1.2.2 Type B shall be the preferred specimen when only smaller specimens are available, as in sandwich panels, etc.  
1.2.3 Type C shall be the preferred specimen for the determination of tensile adhesive properties of a cellular plastic to a substrate as in a sandwich panel (top and bottom substrate) or the bonding strength of a cellular plastic to a single substrate.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
Note 1: There is no known ISO equivalent to this test method.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    7 pages
    English language
    sale 15% off
ASTM
ASTM D7252-22(Test Method)
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates

SIGNIFICANCE AND USE
5.1 This test method is used for research or for quality control to characterize isocyanates used in polyurethane products.
SCOPE
1.1 This test method determines the percent by weight of monomeric isomers and total monomer in crude or modified isocyanates. The test method is applicable to methylene di(phenylisocyanate) (MDI) and polymeric (methylene phenylisocyanate) (PMDI). (See Note 1.)  
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM D5672/D5672M-22(Test Method)
Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm [1-in.] Deflection Technique

SIGNIFICANCE AND USE
4.1 The 25-mm [1-in.] deflection IFD method is recommended for production screening and quality control on full size cushions only.  
4.2 Applicable cushion thicknesses to be tested by this test method are only those listed in this test method. Further research and development are required before this test method is applicable to other cushion thicknesses.  
4.3 This test method is designed to give a value approximating the 25 % IFD on a 100-mm [4-in.] thick piece of foam when the actual specimen thickness tested is within the ranges listed in the test method. In case of disagreement, the referee method is the IFD procedure in Test Methods D3574, Test B1. The user of this test method shall establish the correlation between this test method and the referee method.
SCOPE
1.1 This test method covers a screening type quality control test used to determine if flexible polyurethane foam cushions are within the specified grade range for firmness.  
1.2 This test method is limited to foams with thicknesses that are 75 mm [3 in.] or greater.  
1.3 This test method is based on the fact that the traditional industry standard thickness for Indentation Force Deflection (IFD) is 100 mm [4 in.], and the traditional percent deflection for IFD acceptance and product planning is 25 %. With respect, then, to these traditional industry conventions, a 25 % deflection on a 100-mm [4-in.] cushion would be 25 mm [1 in.]. Thus, deflecting standard cushions (of proper 100 mm thickness) 25 mm [1 in.] provides a quick way to determine if the flexible polyurethane foam is within the specified grade range for 25 % IFD.  
1.4 Cushion thicknesses less than 75 mm [3 in.] shall not be tested for IFD using this test method.  
1.5 This test method is intended to provide a quick and simple method to screen flexible polyurethane foams for determination of its firmness grade.  
1.6 Units—The values stated in U.S. Customary or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This test method and ISO 2439 address the same subject matter, but differ in technical content.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    3 pages
    English language
    sale 15% off
  • Standard
    3 pages
    English language
    sale 15% off
ASTM
ASTM D1667-22(Specification)
Standard Specification for Flexible Cellular Materials—Poly (Vinyl Chloride) Foam (Closed-Cell)

ABSTRACT
This specification covers flexible closed-cell or non-interconnecting cellular products, the elastomer content of which is predominantly poly(vinyl chloride) foam or copolymers thereof. Materials shall be produced in sheet, strip, molded, or simple specific shapes. Complete details about apparatuses needed, specimen preparation, and procedures for the testing of compression deflection, compression set under constant deflection, and water absorption are thoroughly itemized.
SCOPE
1.1 This specification covers flexible closed-cell or non-interconnecting cellular products, the elastomer content of which is predominantly poly(vinyl chloride) or copolymers thereof.  
1.2 In the case of conflict between the provisions of this specification and those of detailed specifications or methods of test for a particular product, the latter shall take precedence.  
1.3 Reference to the methods for testing closed-cell poly(vinyl chloride) contained herein shall specifically state the particular test or tests desired and not refer to these methods of test as a whole.  
1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
1.5 The following precautionary statement pertains to the test method portions only of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    6 pages
    English language
    sale 15% off
  • Technical specification
    6 pages
    English language
    sale 15% off
ASTM
ASTM D4986-22(Test Method)
Standard Test Method for Horizontal Burning Characteristics of Cellular Polymeric Materials

SIGNIFICANCE AND USE
5.1 This test method provides a means of measuring the time and extent of burning for cellular polymeric materials. It also provides a means of measuring burning rates for materials that continue to burn past the specified gage marks.  
5.2 This test method provides a means of comparing the burning characteristics of materials of like thickness density, cell size, and skin irregularities, including the effect of falling particles of cellular polymeric materials. It is suitable for quality control, specification acceptance, and for research and development. Examples include filled or reinforced, rigid or flexible, or cut or formed materials  
5.3 In this test method, the specimens are subjected to one or more specific sets of laboratory fire test exposure conditions. If different test conditions are substituted or if the anticipated end-use conditions are changed, it is not always possible from this test method to predict changes in the performance characteristics measured. Therefore, the results are strictly valid only for the fire test exposure conditions described in this procedure.  
5.4 This test method is not intended to be a criterion for fire hazard. The fire hazard created by materials depends upon the form and end use of the material. Assessment of fire hazard includes, but is not limited to, many factors such as flame spread, burning rate, ease of ignition, fuel contribution, heat evolution, products of combustion, and others.
SCOPE
1.1 This fire-test-response standard contains a test method for small-scale laboratory procedures to be used to determine the relative rate of burning and the extent and time of burning of horizontally oriented cellular polymeric materials having a density less than 250 kg/m3.  
1.2 The results are intended to serve as a preliminary indication of their acceptability with respect to flammability for a particular application. The final acceptance of the material is dependent upon its use in the end-product that conforms with the standards applicable to such end-product.  
1.3 The classification system described in the Appendix X1 is intended for quality assurance and the preselection of component materials for products.  
1.4 This standard measures and describes the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.5 The values stated in SI units are to be regarded as standard.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 6.1.1.  
1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
Note 1: This test method is equivalent to ISO 9772.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    7 pages
    English language
    sale 15% off
  • Standard
    7 pages
    English language
    sale 15% off
ASTM
ASTM D3675-22(Test Method)
Standard Test Method for Surface Flammability of Flexible Cellular Materials Using a Radiant Heat Energy Source

SIGNIFICANCE AND USE
5.1 This test method is intended for use when measuring surface flammability of flexible cellular materials exposed to fire. The test method provides a laboratory test procedure for measuring and comparing the surface flammability of materials when exposed to a prescribed level of radiant heat energy. The test is conducted using specimens that are representative, to the extent possible, of the material or assembly being evaluated. For example, if an assembly is required to be tested, such specimens shall replicate the type and thickness of all the layers present in the assembly being evaluated.  
5.2 The rate at which flames will travel along surfaces depends upon the physical and thermal properties of the material, product, or assembly under test, the specimen mounting method and orientation, the type and level of fire or heat exposure, the availability of air, and properties of the surrounding enclosure. (1-6)4, 5  
5.3 Test Method E162 is a generic version of this test method, using an apparatus that is substantially the same as the one used in this test method. However, Test Method E162 is normally intended for application to specimens other than flexible cellular materials.  
5.3.1 The pilot burner in this test method is different from the pilot burner in Test Method E162.  
5.4 In this procedure, the specimens are subjected to one or more specific sets of laboratory fire test conditions. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this test to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire test exposure conditions described in this procedure.  
5.5 If the test results obtained by this test method are to be considered as part of an overall assessment of fire hazard in a building or structure, then the criteria, concepts and procedures incorporated into Guide E1546 shall be taken into consideration.
SCOPE
1.1 This is a fire test response standard.  
1.2 This test method describes the measurement of surface flammability of flexible cellular materials.  
1.3 This standard measures and describes the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not, by itself, incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.  
1.6 Specific information about hazards is given in Section 7.
Note 1: There is no known ISO equivalent to this standard.  
1.7 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units, in parentheses, are for information only and are approximations (see also IEEE/ASTM SI-10).  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    11 pages
    English language
    sale 15% off
  • Standard
    11 pages
    English language
    sale 15% off
ASTM
ASTM D3768-22(Test Method)
Standard Test Method for Microcellular Urethanes—Flexural Recovery

SIGNIFICANCE AND USE
4.1 This test method is used to indicate the ability of a material to recover after a 180° bend around a 12.7-mm (0.5-in.) diameter mandrel at room temperature.  
4.2 Before proceeding with this test method, reference shall be made to any specification for the material being tested. Any test specimen preparation, conditioning, or dimensions, or combination thereof, and testing parameters covered in the materials specification shall take precedence over those mentioned in these test methods. If there are no material specifications, then the default conditions apply.
Note 2: This test method is applicable to solid urethanes.
SCOPE
1.1 This test method covers the procedure and apparatus for measuring the flexural recovery of microcellular urethanes.  
1.2 The values stated in SI units are to be regarded as standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D3851-17(2022)(Specification)
Standard Specification for Microcellular Polyurethane Shoe Soling Materials

ABSTRACT
This specification covers the standard physical property requirements and test methods for urethane microcellular materials intended for shoe soling applications. It covers three grades of polyurethane materials that may be selected for use according to abrasion resistance, cut-growth resistance, and other physical properties. Materials shall be subjected to physical tests and shall conform to the requirements for physical properties such as density, tensile strength, ultimate elongation, tear, hardness, cut-growth resistance, and taper abrasion or wear index.
SCOPE
1.1 This specification covers microcellular polyurethane materials for shoe soling applications. It provides physical property requirements and identifies test methods for determining those specific properties.  
1.2 SI units are to be regarded as the preferred units of measurements for values. The inch-pound values in parentheses can be used if there is an agreement between the contractual parties.  
Note 1: There is no known ISO equivalent to this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    3 pages
    English language
    sale 15% off