ASTM D3851-97(2003)e1

Standard Specification for Urethane Microcellular Shoe Soling Materials

SCOPE
1.1 This specification covers urethane microcellular materials for shoe soling applications. It provides properties and dimensional requirements and test methods for specific properties.
1.2 SI units are to be regarded as the preferred units of measurements for values. The inch-pound values in brackets can be used if there is an agreement between the contractual parties.
Note 1—There is no similar or equivalent ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2003
• ICS: 61.060 - Footwear
• ICS: 83.100 - Cellular materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.22 - Cellular Materials - Plastics and Elastomers

Relations

• Replaces: ASTM D3851-97 - Standard Specification for Urethane Microcellular Shoe Soling Materials
• Effective Date: 10-Mar-2003
• Replaced By: ASTM D3851-07 - Standard Specification for Urethane Microcellular Shoe Soling Materials
• Effective Date: 01-Nov-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
e1
Designation: D 3851 – 97 (Reapproved 2003)
Standard Specification for
Urethane Microcellular Shoe Soling Materials
This standard is issued under the fixed designation D 3851; 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.
e NOTE—Editorially added Test Method D 2240 for reference in March 2003.
1. Scope* abrasion resistance, cut-growth resistance, and other physical
properties. The grades are classified as Grade 1, Grade 2, and
1.1 This specification covers urethane microcellular materi-
Grade 3.
als for shoe soling applications. It provides properties and
dimensional requirements and test methods for specific prop-
4. Ordering Information
erties.
4.1 Any product represented as complying with this speci-
1.2 SI units are to be regarded as the preferred units of
fication shall meet all the requirements listed herein for its
measurements for values. The inch-pound values in brackets
particular classification.
can be used if there is an agreement between the contractual
parties.
5. Physical Requirements
NOTE 1—There is no similar or equivalent ISO standard.
5.1 The material shall conform to requirements for physical
properties prescribed in Table 1.
2. Referenced Documents
2.1 ASTM Standards: 6. Test Methods
D 412 Test Methods for Vulcanized Rubber and Thermo-
6.1 The physical tests shall be in accordance with Test
plastic Rubbers and Thermoplastic Elastomers— Tension
Method D 3489.
D 624 Test Method for Tear Strength of Conventional
6.2 Material Shrinkage—After removal from the mold,
Vulcanized Rubber and Thermoplastic Elastomers
allow the part to cool to room temperature. Measure the largest
D 1052 Test Method for Measuring Rubber Deterioration—
dimensions of the part and the mold at room temperature to the
Cut Growth Using Ross Flexing Apparatus
nearest 0.02 mm or 0.001 in. Calculate the percent change as
D 1938 Test Method for Tear Propagation Resistance of
follows:
Plastic Film and Thin Sheeting by a Single-Tear Method
L 2 L
m p
D 2240 Test Method for Rubber Property—Durometer
% change in length 5 3 100 (1)
L
m
Hardness
D 3489 Test Methods for Rubber—Microcellular Urethane
where:
L = length of mold at room temperature, and
m
3. Classification
L = length of molded part at room temperature.
p
3.1 This specification covers three grades of microcellular
NOTE 2—An alternative method for determining material shrinkage is
urethane materials that may be selected for use according to
given in Annex A1.
7. Inspection
This specification is under the jurisdiction of ASTM Committee D20 on
7.1 Inspection of the material shall be agreed upon in
Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular
Materials—Plastics and Elastomers. writing between the purchaser and the seller as part of the
Current edition approved March 10, 2003. Published May 2003. Originally
purchase contract.
approved in 1980. Last previous edition approved in 1997 as D 3851 – 97.
7.2 Testing for conformance to requirements shall be done
This revision includes the addition of an ISO equivalency statement and a
inaccordancewiththisspecificationandTestMethodsD 3489.
keyword section. It also establishes SI units as the preferred units but allows for the
use of inch-pound units.
Annual Book of ASTM Standards, Vol 09.01.
Annual Book of ASTM Standards, Vol 08.02.
Annual Book of ASTM Standards, Vol 09.01.
Annual Book of ASTM Standards, Vol 09.02.
*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.
e1
D 3851 – 97 (2003)
TABLE 1 Physical Property Requirements on Polyurethane Shoe Systems
Grade
ASTM
Property
Method
AAA
Density D 3489
Tensile strength, min, MPa [psi] 4.9 [700] 3.5 [500] 2.8 [400] D 412
Ultimate elongation, min, % 300 275 250 D 412
Tear, Die C, min, kN/m [lbf/in.] 22.0 [125] 22.0 [125] 17.5 [100] D 624
Tear, min, kN/m [lbf/in.] 11.5 [65] 7.0 [40] 4.4 [25] D 1938
AAA
Hardness, Shore A Durometer D 2240
Cut-growth resistance, minimum cycles at: D 1052
−20°F 30 000 10 000 10 000
0°F 75 000 30 000 20 000
75°F 150 000 75 000 50 000
Shrinkage, min, % 1.0 1.5 1.5 6.2 and Annex A1
Taber abrasion (wear index), H-18 wheel, 1
...