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ASTM D6456-99

(Specification)

Standard Specification for Finished Parts Made from Polyimide Resin

Standard Specification for Finished Parts Made from Polyimide Resin

SCOPE
1.1 This specification is intended to be a means of calling out finished plastic parts ready for industrial and consumer use.
1.2 This specification covers finished parts and shapes from which parts are machined, made from a semi-crystalline polyimide (PI).
1.3 This specification is intended to replace MIL-R-46198 and Provisional Standard Specification PS 93.
Note 1-There is no similar or equivalent ISO Standard.
1.4 This specification covers parts made from semi-crystalline polyimide, which is a thermosetting material that shows no softening or melting by DMA (D 4065) at or below 260°C (500°F).1.5 Since PI is a thermoset resin, no provisions are included for recycled products.
1.6 The classification system outlined in this specificaiton is intended to be identical to that used by Department of Defense for over 20 years. No changes are intended at this time.
1.7 The values stated in SI units are regarded as the standard in all property and dimensional tables. For reference purposes, inch-pound units are stated in parentheses.
1.8 Application-Parts in this specification are generally used for applications requiring the following combination of properties: low coefficient of friction, and low thermal expansion coupled with heat resistance for continuous operation at temperatures up to 260°C (500°F) and for short-term excursions upward to 482°C (900°F).
1.9 The following precautionary caveat pertains only to the test method portion, Section 12, 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Aug-1999
ICS
83.140.01 - Rubber and plastics products in general
Technical Committee
D20 - Plastics
Drafting Committee
D20.20 - Plastic Lumber
Current Stage
Ref Project

Relations

Replaced By
ASTM D6456-99(2004) - Standard Specification for Finished Parts Made from Polyimide Resin
Effective Date
01-Mar-2004

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ASTM D6456-99 - Standard Specification for Finished Parts Made from Polyimide ResinASTM D6456-99 - Standard Specification for Finished Parts Made from Polyimide Resin
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ASTM D6456-99 - Standard Specification for Finished Parts Made from Polyimide Resin
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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: D 6456 – 99
Standard Specification for
Finished Parts Made from Polyimide Resin
This standard is issued under the fixed designation D 6456; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 695 Test Method for Compressive Properties of Rigid
Plastics
1.1 This specification is intended to be a means of calling
D 790 Test Methods for Flexural Properties of Unreinforced
out finished plastic parts ready for industrial or consumer use.
and Reinforced Plastics and Electrical Insulating Materi-
1.2 This specification covers finished parts and shapes from
als
which parts are machined, made from a semi-crystalline
D 792 Test Methods for Density and Specific Gravity (Rela-
polyimide (PI).
tive Density) of Plastics by Displacement
1.3 This specification is intended to replace MIL-R-46198
D 883 Terminology Relating to Plastics
and Provisional Standard Specification PS 93.
D 1600 Terminology for Abbreviated Terms Relating to
NOTE 1—There is no similar or equivalent ISO standard. 2
Plastics
1.4 This specification covers parts made from semi- D 1708 Test Method for Tensile Properties of Plastics by
crystalline polyimide, which is a a thermosetting material that Use of Microtensile Specimens
shows no softening or melting by DMA (D 4065) at or below D 3892 Practice for Packaging/Packing of Plastics
260°C (500°F). D 4065 Practice for Determining and Reporting Dynamic
1.5 Since PI is a thermoset resin, no provisions are included Mechanical Properties of Plastics
for recycled products. E 8 Test Methods for Tension Testing of Metallic Materials
1.6 The classification system outlined in this specification is 2.2 ANSI Standard:
intended to be identical to that used by Department of Defense Z1.4 Standard for Sampling Plans and Tables for Inspection
,
5 6
for over 20 years. No changes are intended at this time. by Attributes
1.7 The values are stated in SI units and are regarded as the 2.3 Military Standards:
standard in all property and dimensional tables. For reference MIL-R-46198
purposes, inch-pound units are stated in parentheses. MIL-STD 129
1.8 Application—Parts in this specification are generally
3. Terminology
used for applications requiring the following combination of
properties: low coefficient of friction, and low thermal expan- 3.1 Definitions—Terms are defined in accordance with Ter-
minologies D 883 and D 1600 unless otherwise indicated.
sion coupled with heat resistance for continuous operation at
temperatures up to 260°C (500°F) and for short-term excur-
4. Classification
sions upward to 482°C (900°F).
4.1 Product shape and size as defined in the applicable
1.9 The following precautionary caveat pertains only to the
purchase order.
test method portion, Section 12, of this specification: This
4.2 The type of product shall be categorized by type and
standard does not purport to address all of the safety concerns,
class depending on resin and filler compositions defined as
if any, associated with its use. It is the responsibility of the user
follows:
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita- Type I Unfilled base resin
Type II Resin with graphite filler
tions prior to use.
Class 1 15 % by weight graphite filler, nominal
Class 2 40 % by weight graphite filler, nominal
2. Referenced Documents
2.1 ASTM Standards:
D 638 Test Method for Tensile Properties of Plastics
Annual Book of ASTM Standards, Vol 08.02.
Annual Book of ASTM Standards, Vol 03.01.
Available from American National Standards Institute, 11 W. 42nd St., 13th
This specification is under the jurisdiction of ASTM Committee D-20 on Floor, New York, NY 10036.
Plastics and is the direct responsibility of Subcommittee D20.20 on Plastic Products. Replaced MIL-STD-105.
Current edition approved Aug. 10, 1999. Published October 1999. Available from Standardization Documents Order Desk, Bldg. 4, Section D,
Annual Book of ASTM Standards, Vol 08.01. 700 Robbins Ave., Philadelphia, PA 19111–5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 6456
TABLE 2 Manufacturing Method and Form
Class 3 15 % by weight graphite and 10 % by weight fluorocarbon
fillers, nominal
Suffix Letter Product Form
Type III 15 % by weight molybdenum disulfide filler, nominal
M Hot isostatically molded billet
NOTE 2—Filler contents shown above are approximate. See Table 1 for P Hot unidirectionally pressed slab
D Direct-formed (pressed) and sintered parts
exact composition.
4.3 Polymer compositions shall be specified by use of
type/class designations as described in Table 1.
4.4 Manufacturing method and product form shall be speci-
9. Sampling
fied by use of a suffix letter as described in Table 2.
9.1 Sampling shall be statistically adequate to satisfy the
4.5 When applying the suffix letter, the type/class designa-
requirements of this specification as applicable (see ANSI
tion shall precede the letter.
Z1.4).
5. Ordering Information 9.2 For purposes of sampling, an inspection lot for exami-
nation and tests shall consist of all material of the same type,
5.1 All shapes covered by this specification shall be ordered
class, grade, and nominal size submitted for inspection at one
using the proper callout designation (see Section 4).
time.
6. Material
10. Number of Tests
6.1 The base material shall consist of semi-crystalline poly-
10.1 Routine lot inspection shall be based upon tensile
imide resins with a base polymer structure derived from
strength and tensile elongation at 23°C and specific gravity as
pyromellitic dianhydride and 4,48-diaminodiphenylether.
specified in product Table 3.
6.2 The base material shall conform to the composition
requirements of Table 1. The base material, depending on type 10.2 When the number of test specimens is not stated in the
and class, may contain up to 50 wt % pigments, fillers or test method, a single determination may be made. If more than
lubricants, or a combination thereof, and no fibrous reinforce- single determinations and separate portions of the same sample
ment. are ma
...

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ASTM D6109-24(Test Method)
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4.1 The ability of a plastic material to resist deterioration of its electrical, mechanical, and optical properties caused by exposure to light, heat, and water can be very significant for many applications. This practice is intended to induce property changes associated with end-use conditions, including the effects of daylight, moisture, and heat. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure.  
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1.1 This practice covers specific procedures and test conditions that are applicable for xenon-arc exposure of plastics conducted in accordance with Practices G151 and G155. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.  
1.2 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.  
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ASTM D5418-23(Test Method)
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)

SIGNIFICANCE AND USE
5.1 This test method provides a simple means of characterizing the thermomechanical behavior of plastic compositions using a very small amount of material. Since small test specimen geometries are used, it is essential that the specimens be representative of the material being tested. The data obtained can be used for quality control and/or research and development purposes. For some classes of materials, such as thermosets, it can also be used to establish optimum processing conditions.  
5.2 Dynamic mechanical testing provides a sensitive means for determining thermomechanical characteristics by measuring the elastic and loss moduli as a function of frequency, temperature, or time. Plots of moduli and tan delta of a material versus these variables can be used to provide a graphic representation indicative of functional properties, effectiveness of cure (thermosetting-resin systems), and damping behavior under specified conditions.  
5.2.1 Observed data are specific to experimental conditions. Reporting in full (as described in this test method) the conditions under which the data was obtained is essential to assist users with interpreting the data an reconciling apparent or perceived discrepancies.  
5.3 This test method can be used to assess the following:  
5.3.1 The modulus as a function of temperature or aging, or both,  
5.3.2 The modulus as a function of frequency,  
5.3.3 The effects of processing treatment, including orientation, induced stress, and degradation of physical and chemical structure,  
5.3.4 Relative resin behavioral properties, including cure and damping,  
5.3.5 The effects of substrate types and orientation (fabrication) on elastic modulus,  
5.3.6 The effects of formulation additives that might affect processability or performance,  
5.3.7 The effects of annealing on modulus and glass transition temperature,  
5.3.8 The effect of aspect ratio on the modulus of fiber reinforcements, and  
5.3.9 The effect of fillers, additives ...
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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.
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ASTM D6117-23(Test Method)
Standard Test Methods for Mechanical Fasteners in Plastic Lumber and Shapes

SIGNIFICANCE AND USE
6.1 The resistance of plastic lumber and shapes to direct withdrawal of nails, staples, or screws is a measure of its ability to hold or be held to an adjoining object by means of such fasteners. Factors that affect this withdrawal resistance include the physical and mechanical properties of the plastic lumber and shapes; the size, shape, and surface condition of the fasteners; the speed of withdrawal; physical changes to plastic lumber and shapes or fasteners between time of driving and time of withdrawal; orientation of fiber axis; the occurrence and nature of prebored lead holes; and the temperatures during insertion and withdrawal. These factors will be as circumstances dictate, and representative of the normal manufacturing process.  
6.2 By using a standard size and type of nail, staple, or screw, withdrawal resistance of plastic lumber and shapes can be determined. Throughout the method this is referred to as the basic withdrawal test. Similarly, comparative performances of different sizes or types of nail, staple, or screw can be determined by using a standard procedure with a particular plastic lumber and shape, which eliminates the plastic lumber and shapes product as a variable. Since differences in test methods can have considerable influence on results, it is important that a standard procedure be specified and adhered to, if test values are to be related to other test results.
SCOPE
1.1 These test methods cover the evaluation of fastener use with “as manufactured” plastic lumber and shapes through the use of two different testing procedures.  
1.2 The test methods appear in the following order:    
Sections  
Test Method A—Nail, Staple, or Screw Withdrawal Test  
4 to 13  
Test Method B—Nail, Staple, or Screw Lateral Resistance Test  
14 to 22  
1.3 Plastic lumber and plastic shapes are currently made predominately from recycled plastics. However, these test methods would also be applicable to similar manufactured plastic products made from virgin resins where the product is non-homogeneous in the cross-section.  
1.4 The values stated in inch-pound units are to be regarded as standard. The SI units given in parentheses are for information only.  
1.5 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.

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ASTM
ASTM D7211-23(Specification)
Standard Specification for Parts Machined from Polychlorotrifluoroethylene (PCTFE) and Intended for General Use

ABSTRACT
This specification establishes the requirements for finished parts machined from unplasticized polychlorotrifluoroethylene (PCTFE) homopolymers containing regrind and recycled polymer intended for general commercial use. This specification does not cover parts machined from PCTFE copolymers, PCTFE films or tapes, or modified PCTFE containing pigments or plasticizers. Nor does it cover PCTFE parts used in aerospace applications involving storage and handling of oxygen media, air media, inert media, and certain reactive media (specifically ammonia, gaseous hydrogen, and liquid hydrogen), wherein dimensional stability, high molecular weight, molecular weight retention, and crystallinity control are important considerations. Materials shall be tested on and conform accordingly to the following properties: specific gravity; melting point; deformation under load; zero strength time (ZST); annealing performance; and dimensional stability.
SCOPE
1.1 This specification is intended to be a means of calling out finished machined parts ready for general use.  
1.2 This specification establishes requirements for parts machined from polychlorotrifluoroethylene (PCTFE) semifinished parts.  
1.3 For aerospace grade, machined PCTFE parts, use Specification D7194.
Note 1: Quick-quenched PCTFE will potentially exhibit dimensional relaxation in the vicinity of Tg = 55°C (131°F).
Note 2: Although no recommendations are made regarding the limiting upper use temperature of PCTFE, the heat deflection temperature of PCTFE as determined by Test Method D648 is 126°C (259°F).  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
1.5 The following precautionary caveat pertains only to the test methods portion, Section 11, 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 3: 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.

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ASTM
ASTM D6779-23(Specification)
Standard Classification System for and Basis of Specification for Polyamide Molding and Extrusion Materials (PA)

SCOPE
1.1 This classification system covers polyamide materials suitable for molding and extrusion. Some of these compositions are also suitable for application from solution.  
1.2 The properties included in this classification system are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be specified by using suffixes as given in Section 5.  
1.3 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification system.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system. 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 classification system is similar to ISO 16396-1/-2,
although the technical content is significantly different.
Note 2: The materials covered by this classification system include a subset of polyamides defined as polyphthalamides (PPA) as in 3.2.1, some of which are also classified in ASTM D5336. Specifically, groups 7, 10, 12, 13, 14, 15 and 17 in this standard are PPA materials. ASTM D5336 gives further details relating to groups 10, 12 and 13.  
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.

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  • Technical specification
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