Norm

ASTM C749 - 13 en

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

  • Deze norm is ingetrokken sinds 01-10-2015

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Over deze norm

Status Ingetrokken
Aantal pagina's 12
Gepubliceerd op 01-10-2013
Taal Engels

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 25/8 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—11/2  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 43/4 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—11/2 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 43/4 long—Carbon

 

114

 

Not Used

1C

115

2

Crosshead attachment yoke—11/2 dia x 4 long—416 or 440 S.S.D

11/4 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—11/2 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—17/8 dia x 35/8 long—416 or 440 S.S.D

 

122

2

Split sleeve—11/2 dia x 21/4 long—416 or 440 S.S.D

 

123

1

Specimen—11/4 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—21/4 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—23/4 dia x 51/2 long—416 or 440 S.S.D

 

128

2

Split sleeve—21/4 dia x 4 long—416 or 440 S.S.D

 

129

1

Specimen—2.000 dia x 143/8 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

MaterialB

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

11/4 by 5/8 

 

 

 

2 by 1

 

 

 

 

11/4 by 5/8 

 

CGE

0.265

14, rounds, extruded

2 by 11/4 

 

 

 

 

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 1The 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 2For 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.

Details

ICS-code 71.060.10
Engelse titel Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
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