ASTM-D638 2010

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D638-10 Standard Test Method for Tensile Properties of Plastics

Published By	Publication Date	Number of Pages
ASTM	2010	16

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Categories: 83.080.01 - Plastics in general, ASTM

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Description

ASTM D638-10

Historical Standard: Standard Test Method for Tensile Properties of Plastics

ASTM D638

Scope

1.1 This test method covers the determination of the tensile properties of unreinforced and reinforced plastics in the form of standard dumbbell-shaped test specimens when tested under defined conditions of pretreatment, temperature, humidity, and testing machine speed.

1.2 This test method can be used for testing materials of any thickness up to 14 mm (0.55 in.). However, for testing specimens in the form of thin sheeting, including film less than 1.0 mm (0.04 in.) in thickness, Test Methods D882 is the preferred test method. Materials with a thickness greater than 14 mm (0.55 in.) must be reduced by machining.

1.3 This test method includes the option of determining Poisson’s ratio at room temperature.

Note 1—This test method and ISO 527-1 are technically equivalent.

Note 2—This test method is not intended to cover precise physical procedures. It is recognized that the constant rate of crosshead movement type of test leaves much to be desired from a theoretical standpoint, that wide differences may exist between rate of crosshead movement and rate of strain between gage marks on the specimen, and that the testing speeds specified disguise important effects characteristic of materials in the plastic state. Further, it is realized that variations in the thicknesses of test specimens, which are permitted by these procedures, produce variations in the surface-volume ratios of such specimens, and that these variations may influence the test results. Hence, where directly comparable results are desired, all samples should be of equal thickness. Special additional tests should be used where more precise physical data are needed.

Note 3—This test method may be used for testing phenolic molded resin or laminated materials. However, where these materials are used as electrical insulation, such materials should be tested in accordance with Test Methods D229 and Test Method .

Note 4—For tensile properties of resin-matrix composites reinforced with oriented continuous or discontinuous high modulus >20-GPa [>3.0 × 10⁶-psi) fibers, tests shall be made in accordance with Test Method D3039/D3039M.

1.4 Test data obtained by this test method are relevant and appropriate for use in engineering design.

1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

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 and health practices and determine the applicability of regulatory limitations prior to use.

A3.1.1 This test method covers the determination of Poisson’s ratio obtained from strains resulting from uniaxial stress only.

A3.1.2 Test data obtained by this test method are relevant and appropriate for use in engineering design.

A3.1.3 The values stated in SI units are regarded as the standard. The values given in parentheses are for information only.

Note A3.1—This standard is not equivalent to ISO 527-1.

Keywords

modulus of elasticity; percent elongation; plastics; tensile properties; tensile strength; Engineering criteria/design; Reinforced plastics; Tensile properties/testing–plastics; Unreinforced plastics

ICS Code

ICS Number Code 83.080.01 (Plastics in general)

DOI: 10.1520/D0638-10

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Significance and Use Apparatus
3	Test Specimens
4	FIG. 1
5	FIG. 2 FIG. 3
6	Number of Test Specimens Speed of Testing Conditioning Procedure TABLE 1 TABLE 2
7	Calculation Report
8	Precision and Bias FIG. 4 TABLE 3 TABLE 4 TABLE 5 TABLE 6
9	Keywords TABLE 7 TABLE 8 TABLE 9 TABLE 10 TABLE 11
10	A1. TOE COMPENSATION A1.1 A1.2 A1.3 A2. DEFINITIONS OF TERMS AND SYMBOLS RELATING TO TENSION TESTING OF PLASTICS A2.1 A2.2 A2.3 FIG. A1.1 FIG. A1.2
11	A2.4 A2.5 A2.6 A2.7 A2.8 A2.9 A2.10 A2.11 A2.12 A2.13 A2.14 A2.15 FIG. A2.1
12	A2.16 A2.17 A2.18 A2.19 A2.20 A2.21 A2.22 A2.23 FIG. A2.2 FIG. A2.3
13	A2.24 A2.25 A3. MEASUREMENT OF POISSON’S RATIO A3.1 Scope A3.2 Referenced Documents A3.3. Terminology A3.4 Significance and Use A3.5 Apparatus
14	A3.6 Test Specimen A3.7 Number of Test Specimens A3.8 Conditioning A3.9 Procedure A3.10 Calculation
15	A3.11 Report A3.12 Precision and Bias A3.13 Keywords
16	TABLE A3.1

Additional information

Standard Title	D638-10 Standard Test Method for Tensile Properties of Plastics
Published Code	ASTM
Publication Date	2010
Pages Count	16
ICS Codes	83.080.01 - Plastics in general

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ASTM-D638 2010

ASTM D638-10

Historical Standard: Standard Test Method for Tensile Properties of Plastics

ASTM D638

PDF Catalog

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