ASTM-C749 2013

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C749-13 Standard Test Method for Tensile Stress-Strain of Carbon and Graphite

Published By	Publication Date	Number of Pages
ASTM	2013	12

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Categories: 71.060.10 - Chemical elements, ASTM

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Description

ASTM C749-13

Historical Standard: Standard Test Method for Tensile Stress-Strain of Carbon and Graphite

ASTM C749

Scope

1.1 This test method covers the testing of carbon and graphite in tension to obtain the tensile stress-strain behavior, to failure, from which the ultimate strength, the strain to failure, and the elastic moduli may be calculated as may be required for engineering applications. Table 2 lists suggested sizes of specimens that can be used in the tests.

TABLE 1 List of Materials Shown in Fig. 2

^A 1 in. is equal to 25.4 mm.

^B Preload chain to yield using a load time recording.

^C Commercially available.

^D Or alternative high strength stainless steel.

TABLE 2 Sample Sizes Used in Round-Robin Tests (Suggested Specimen Size)^A

^A Based on Research Report RR:C05-1000 (see Section 11).

^B Identity of suppliers available from ASTM International Headquarters.

^C Gas-bearings.

Note 1—The results of about 400 tests, on file at ASTM as a research report, show the ranges of materials that have been tested, the ranges of specimen configurations, and the agreement between the testers. See Section 11.

Note 2—For safety considerations, it is recommended that the chains be surrounded by suitable members so that at failure all parts of the load train behave predictably and do not constitute a hazard for the operator.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Conversions are not provided in the tables and figures.

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.

Keywords

carbon; graphite; modulus of elasticity; tensile strain to failure; tensile strength

ICS Code

ICS Number Code 71.060.10 (Chemical elements)

DOI: 10.1520/C0749-13

Additional information

CS	0.030
2 in. A grips	. . .
Assembly	Item
Purebon P-59	. . .
9326A	0.001
AXM-50	0.001
1D	. . .
11/4 in. A grips	116
1C	115
1B	. . .
MaterialB	Max Grain Size, in.
1A	101
Graphitar	. . .
AGR	0.250
Grade 86
HLM	0.033
3/4 in. A grips	. . .
9326	0.001
1/2 in. A grips B,C	102
CGE	0.265
ATJ	0.006

ICS Codes	71.060.10 - Chemical elements

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ASTM-C749 2013

ASTM C749-13

Historical Standard: Standard Test Method for Tensile Stress-Strain of Carbon and Graphite

ASTM C749

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