ASTM D5476-99

Standard Classification System for Thermoplastic Polyurethane Materials (TPU) (Withdrawn 2005)

SCOPE
1.1 This classification system covers thermoplastic polyurethane materials suitable for injection molding, extrusion, compression molding, melt processing, or other applicable methods. Recycled thermoplastic polyurethanes meeting the classification requirements may be used interchangeably with virgin resin.
1.2 The properties included in this classification system are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications, which may be designated by using the suffixes as given in Section 5.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 This standard does not purport to address all of the safety problems, 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 are no ISO standards covering the primary subject matter of this ASTM classification system.
WITHDRAWN RATIONALE
This classification system covers thermoplastic polyurethane materials suitable for injection molding, extrusion, compression molding, melt processing, or other applicable methods. Recycled thermoplastic polyurethanes meeting the classification requirements may be used interchangeably with virgin resin.
Formerly under the jurisdiction of Committee D20 on Plastics, this classification was withdrawn in July 2005 due to its limited use in industry.

General Information

• Status: Withdrawn
• Publication Date: 09-Mar-1999
• Withdrawal Date: 30-Aug-2005
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Referred By: ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
• Effective Date: 10-Mar-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 5476 – 99
Standard Classification System for
Thermoplastic Polyurethane Materials (TPU)
This standard is issued under the fixed designation D 5476; 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.
INTRODUCTION
This classification system and subsequent line callout is intended to be a means of calling out
thermoplastic polyurethane materials used in the fabrication of end items or parts. It is not intended
for the selection of materials. Material selection should be made by those having expertise in the
plastics field after careful consideration of the design and performance required of the part,
environment to which it will be exposed, fabrication processes to be used, and inherent properties of
the material other than those covered by this classification.
1. Scope D 618 Practice for Conditioning Plastics and Electrical
Insulating Materials for Testing
1.1 This classification system covers thermoplastic polyure-
D 638 Test Method for Tensile Properties of Plastics
thane materials suitable for injection molding, extrusion, com-
D 648 Test Method for Deflection Temperature of Plastics
pression molding, melt processing, or other applicable meth-
Under Flexural Load
ods. Recycled thermoplastic polyurethanes meeting the
D 696 Test Method for Coefficient of Linear Thermal Ex-
classification requirements may be used interchangeably with
pansion of Plastics
virgin resin.
D 790 TestMethodsforFlexuralPropertiesofUnreinforced
1.2 The properties included in this classification system are
and Reinforced Plastics and Electrical Insulating Materi-
thoserequiredtoidentifythecompositionscovered.Theremay
als
be other requirements necessary to identify particular charac-
D 792 Test Method for Specific Gravity (Relative Density)
teristics important to specialized applications, which may be
and Density of Plastics by Displacement
designated by using the suffixes as given in Section 5.
D 883 Terminology Relating to Plastics
1.3 The values stated in SI units are to be regarded as the
D 1600 Terminology for Abbreviated Terms Relating to
standard.
Plastics
1.4 This standard does not purport to address all of the
D 1897 Practice for Injection Molding Test Specimens of
safety concerns, if any, associated with its use. It is the
Thermoplastic Molding and Extrusion Materials
responsibility of the user of this standard to establish appro-
D 2240 Test Method for Rubber Property—Durometer
priate safety and health practices and determine the applica-
Hardness
bility of regulatory limitations prior to use.
D 3892 Practice for Packaging/Packing of Plastics
NOTE 1—There are no ISO standards covering the primary subject
D 4000 Classification System for Specifying Plastic Mate-
matter of this ASTM classification.
rials
D 5033 GuidefortheDevelopmentofStandardsRelatingto
2. Referenced Documents
the Proper Use of Recycled Plastics
2.1 ASTM Standards:
E 29 Practice for Using Significant Digits in Test Data to
D 256 Test Methods for Impact Resistance of Plastics and
Determine Conformance with Specifications
Electrical Insulating Materials
D 412 Test Methods for Rubber Properties in Tension
3. Terminology
3.1 Definitions—For definitions of technical terms pertain-
ing to plastics used in this classification, see Terminologies
This classification system is under the jurisdiction of ASTM Committee D-20
D 883 and D 1600 and Guide D 5033.
on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermo-
plastic Materials.
Current edition approved March 10, 1999. Published June 1999. Originally
published as D 5476–93. Last previous edition D 5476–93. Annual Book of ASTM Standards, Vol 08.02.
2 5
Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 08.03.
3 6
Annual Book of ASTM Standards, Vol 09.01. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 5476
4. Classification These groups are subdivided into classes and grades as shown
in the basic property table (Table TPU).
4.1 Unreinforced thermoplastic polyurethane materials are
classified into groups according to their chemical composition.
TABLE TPU Requirements for Thermoplastic Polyurethanes
Tensile
Elongation,
Stress, 100 % Specific
Ultimate, %,
Elongation, Gravity,
A
Group Description Class Description Grade Description min, Test
MPa, min, 60.04, Test
Methods
Test Methods Method D 792
D 412
D 412
01 aromatic polyester 1 nominal hardness 1 1.4 600 1.10
60 Shore A 2 2.0 700 1.10
0 other
2 nominal hardness 1 2.0 700 1.10
70 Shore A 2 3.0 500 1.10
0 other
3 nominal hardness 1 3.0 300 1.15
80 Shore A 2 4.0 300 1.17
3 5.0 300 1.17
4 6.0 300 1.17
0 other
4 nominal hardness 1 4.0 300 1.22
90 Shore A 2 6.0 300 1.22
3 8.0 300 1.22
4 10.0 300 1.22
5 12.0 300 1.22
0 other
5 nominal hardness 1 8.0 400 1.22
50 Shore D 2 10.0 400 1.22
3 12.0 400 1.22
4 14.0 300 1.22
5 16.0 300 1.22
6 18.0 300 1.22
0 other
6 nominal hardness 1 12.0 250 1.22
60 Shore D 2 16.0 250 1.22
3 20.0 250 1.22
4 24.0 250 1.22
5 28.0 250 1.22
0 other
7 nominal hardness 1 18.0 200 1.23
70 Shore D 2 22.0 200 1.23
3 26.0 200 1.23
4 30.0 200 1.23
5 34.0 200 1.23
0 other
8 nominal hardness 1 30.0 100 1.24
80 Shore D 2 34.0 100 1.24
3 38.0 100 1.24
0 other
0 other
02 aromatic polyether 1 nominal hardness 1 2.0 700 1.03
60 Shore A 0 other
2 nominal hardness 1 2.0 700 1.03
70 Shore A 2 2.5 700 1.06
3 3.0 500 1.06
4 3.5 500 1.06
0 other
3 nominal hardness 1 3.5 500 1.06
80 Shore A 2 4.5 400 1.10
3 5.5 350 1.11
4 6.5 300 1.12
0 other
4 nominal hardness 1 4.5 400 1.12
90 Shore A 2 6.5 400 1.12
3 8.5 400 1.13
4 10.5 400 1.13
0 other
5 nominal hardness 1 10.0 400 1.13
50 Shore D 2 14.0 300 1.14
3 18.0 300 1.15
0 other
D 5476
TABLE Continued
Tensile
Elongation,
Stress, 100 % Specific
Ultimate, %,
Elongation, Gravity,
A
Group Description Class Description Grade Description min, Test
MPa, min, 60.04, Test
Methods
Test Methods Method D 792
D 412
D 412
6 nominal hardness 1 16.0 300 1.17
60 Shore D 2 18.0 300 1.17
3 20.0 300 1.17
4 24.0 300 1.18
5 28.0 300 1.18
0 other
7 nominal hardness 1 . 50 1.19
70 Shore D 0 other
0 other
03 aliphatic polyether 1 nominal hardness 1 3.0 400 1.10
70 Shore A 2 4.0 400 1.10
3 5.0 400 1.10
0 other
2 nominal hardness 1 5.0 400 1.10
80 Shore A 2 6.0 400 1.10
3 7.0 400 1.10
0 other
3 nominal hardness 1 10.0 400 1.10
90 Shore A 2 12.0 400 1.10
0 other
4 nominal hardness 1 18.0 400 1.10
50 Shore D 2 22.0 400 1.10
3 26.0 400 1.10
0 other
0 other
04 aliphatic polyester 1 nominal hardness 1 5.0 400 1.15
70 Shore A 2 6.0 400 1.15
0 other
2 nominal hardness 1 6.0 300 1.15
80 Shore A 2 7.0 300 1.15
3 8.0 300 1.15
0 other
3 nominal hardness 1 6.0 300 1.15
90 Shore A 2 8.0 300 1.15
3 10.0 300 1.15
0 other
0 other
00 other 0 other 0 other
A
Hardness—Test Method D 2240: Shore A, 5 s delay; Shore D, instantaneous.
NOTE 2—An example of this classification system is as follows. The
4.2.1.1 Although the values listed are necessary to include
designation of TPU0133 would indicate:
the range of properties available in existing materials, users
TPU = thermoplastic polyurethane
should not infer that every possible combination of the
01 (group) = aromatic polyester
properties exists or can be obtained.
3 (class) = nominal hardness Shore A 80
3 (grade) = minimal 5.0 MPa tensile stress at 100 % elongation
NOTE 3—An example of a reinforced thermoplastic polyurethane of
300 % minimum ultimate elongation
this classification system follows. The designation TPU0000-
1.17 6 0.04 specific gravity
RXXA12315 would indicate the following material requirements from
4.1.1 To facilitate the incorporation of future or special
TableA(the RXX designation reflects commercial practice not to specify
materials, the “other/uns
...