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ASTM International - ASTM C749-13

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

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Organization: ASTM International
Publication Date: 1 October 2013
Status: inactive
Page Count: 12
ICS Code (Chemical elements): 71.060.10
significance And Use:

5.1 The round robin testing on which the precision and bias for this test method have been determined employed a range of graphites (see Table 2) whose grain sizes were of the order of 1 mil to... View More

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

Assembly Item Quantity Name, Description, Material
1A 101 2 Crosshead attachment yoke-1 dia x 4 long-416 or 440 S.S.

1/2 in. A grips B,C

102 2 Chain-

3/16  dia, 700 pound tensile limit, 10 links long-Carbon Steel

  103 4 Chain journal-

9/16 dia x 1/2 long-416 or 440 S.S.D

  104 4 Pin-

3/16 dia x 1-Std Dowel

  105 2 Grip attachment yoke-1 dia x 2

5/8 long-416 or 440 S.S.D

  106 2 Pin-

1/4 shank dia with 1/2 dia x 3/4 long knurled head, total length
 21/2 , taper first half inch at 10°-416 or 440 S.S.D

  107 2 Grip sleeve-1

1/2  dia x 25/16 long-416 or 440 S.S.D

  108 2 Split sleeve-1 dia x 1 long-416 or 440 S.S.

D

  109 1 Specimen-0.510 dia x 4

3/4 long-Carbon

  110   Not Used
1B . . . 2 Item 101-Crosshead attachment yoke

3/4 in. A grips

. . . 2 Item 102-Chain
  . . . 4 Item 103-Chain journal
  . . . 4 Item 104-Pin
  . . . 2 Item 105-Grip attachment yoke
  . . . 2 Item 106-Pin
  111 2 Grip sleeve-1

1/2 dia x 25/16 long-416 or 440 S.S.D

  112 2 Split sleeve-1 dia x 1 long-416 or 440 S.S.

D

  113 1 Specimen-0.760 dia x 4

3/4 long-Carbon

  114   Not Used
1C 115 2 Crosshead attachment yoke-1

1/2 dia x 4 long-416 or 440 S.S.D

1

1/4 in. A grips

116 2 Chain-

3/8 dia, 5100 pound tensile limit, 10 links long-Carbon Steel

  117 4 Chain journal-

5/8 dia x 5/8 long-416 or 440 S.S.D

  118 4 Pin-

3/8 dia x 11/2 long-Std Dowel

  119 2 Grip attachment yoke-1

1/2 dia x 25/8 long-416 or 440 S.S.D

  120 2 Pin-

1/2 shank dia with 3/4 dia x 3/4 long knurled head, total length
 41/4 , taper first half inch at 10°-416 or 440 S.S.D

  121 2 Grip sleeve-1

7/8 dia x 35/8 long-416 or 440 S.S.D

  122 2 Split sleeve-1

1/2 dia x 21/4 long-416 or 440 S.S.D

  123 1 Specimen-1

1/4 dia x 93/4 long-Carbon

  124   Not Used
1D . . . 2 Item 115-Crosshead attachment yoke
2 in. 

A grips

. . . 2 Item 116-Chain
  . . . 4 Item 117-Chain journal
  . . . 4 Item 118-Pin
  125 2 Grip attachment yoke-2

1/4 dia x 25/8 long-416 or 440 S.S.D

  126 2 Pin-

1/2 shank dia with 3/4 dia x 3/4 long knurled head, total length
 41/4 , taper first half inch at 10°-416 or 440 S.S.D

  127 2 Grip sleeve-2

3/4 dia x 51/2 long-416 or 440 S.S.D

  128 2 Split sleeve-2

1/4 dia x 4 long-416 or 440 S.S.D

  129 1 Specimen-2.000 dia x 14

3/8 long-Carbon

  130   Not Used

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

Material

B

Max Grain Size, in. Sample, in. Specimen
Size, in.
Recommended
Shank and
Maximum Gauge,
in.
AXM-50 0.001 5 by 5 by 5, molded

1/2 by 0.200C

1/2 by 3/16 

       

3/4 by 1/4 

9326 0.001 20 by 10 by 2, molded

1/2 by 1/4 

 
     

3/4 by 0.3

 
     

1/2 by 3/16 C

 
       

1/2 by 3/16 

       

3/4 by 1/4 

9326A 0.001 20 by 10 by 2, molded

1/2 by 1/4 

1/2 by 3/16 

     

3/4 by 3/8 

 
     

3/4 by 0.3

3/4 by 0.3

     

3/4 by 3/8 

 
 ATJ 0.006 13, rounds, molded

1/2 by 1/4 

1/2 by 1/4 

     

3/4 by 3/8 

3/4 by 1/4 

     

3/4 by 3/8 

3/4 by 1/4 

     

3/4 by 3/8 

 
HLM 0.033 molded, 10 by 18 by 25

1/2 by 1/4 

3/4 by 3/8 

     

3/4 by 3/8 

 
     

3/4 by 3/8 

 
     

3/4 by 3/8 

 
 CS 0.030 10, rounds, extruded 2 by 1  
     

3/4 by 3/8 

3/4 by 3/8 

     

1/2 by 1/4 

 
     

1/2 by 1/4 

 
AGR 0.250 25, rounds, extruded 2 by 1 2 by 1
      2 by 1 1

1/4 by 5/8 

      2 by 1  
      1

1/4 by 5/8 

 
CGE 0.265 14, rounds, extruded 2 by 1

1/4 

 
       

3/4 by 1/2 

2 by 1
Graphitar . . . carbon-graphite, resin impregnated

3/4 by 1/4 

3/4 by 1/4 

Grade 86      

1/2 by 1/4 C

1/2 by 0.2

       

1/2 by 1/4 

 
Purebon P-59 . . . carbon-graphite, copper treated

3/4 by 1/4 

3/4 by 1/4 

     

1/2 by 1/4 C

1/2 by 3/16 

     

1/2 by 1/4 

 

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.

Document History

May 1, 2020
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
5.1 The round robin testing on which the precision and bias for this test method have been determined employed a range of graphites (see Table 2) whose grain sizes were of the order of 1 mil to...
October 1, 2015
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
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...
ASTM C749-13
October 1, 2013
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
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...
May 1, 2010
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
The round robin testing on which the precision and bias for this test method have been determined employed a range of graphites (see Table 2) whose grain sizes were of the order of 1 mil to ¼ in....
July 1, 2008
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
The round robin testing on which the precision and bias for this test method have been determined employed a range of graphites (see Table 1) whose grain sizes were of the order of 1 mil to ¼ in....
August 15, 1992
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
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...
August 15, 1992
Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
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...
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