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ASTM & SAE Standards

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Grade

MarkingSpecification Material

Nominal

Size

Inches

Proof

Load

Stress

ksi

Yield

Strength

Min, ksi

Tensile

Strength

Min, ksi

SAE J429 -

Grade 1

Low or Medium

Carbon Steel

1/4 through

11/233 36 60

SAE J429 -

Grade 2

1/4 3/4over 3/4

11/2

55 /

3357 / 36 74 / 60

ASTM A307 -

Grade A

1/4 through

460

ASTM A307 -

Grade B

1/4 through

460 / 100

ASTM A307 -

Grade C

Props. conforms to

A36

1/4 through

436 58 / 80

SAE J429 -

Grade 5ASTM

A449 - Type 1

Medium Carbon

Steel,

Quenched and

Tempered

1/4 through

1

over 1

through11/2

85

74

92

81

120

105

ASTM A449 -

Type 1

over 11/2

through 355 58 90

ASTMA325 -

Type 1

Medium Carbon

Steel,

Quenched and

Tempered

1/2 through

1

over 1

through

11/2

85

74

92

81

120

105

ASTM A325 -

Type 2

Low Carbon

Martensite Steel,

Quenched and

Tempered

ASTM A325 -

Type 3

AtmosphericCorrosion Resistant

Steel,

Quenched and

Tempered

ASTM A193 - B7

AISI

4140

4142 or

4145

High

Temperature

Service

1/4 through

21/2

over 21/2

through 4

over 4

through 7

105

95

75

105

95

75

125

115

100

AISI 304

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-

Class 1

High Temperature

Service

larger30 75

ASTM A320 - B8

Class 1

AISI 304

High Temperature

Service

1/4 and

larger30 75

ASTM A193 -

B8M

Class 1

AISI 316

High Temperature

Service

1/4 and

larger30 75

ASTM A320 -

B8MClass 1

AISI 316

High TemperatureService

1/4 and

larger 30 75

ASTM A324 -

Grade BC

Medium Carbon

Alloy Steel,

Quenched and

Tempered

1/4 through

21/2

over 21/2

through 4

105

95

109

99

125

115

SAE J429 -

Grade 8 Medium Carbon

Alloy Steel,

Quenched and

Tempered

1/4 through

11/2120 130 150

ASTM A320 -

B8M

Class 1

1/4 through

21/2

over 21/2

through 4

120

105

130

115

150

140

ASTM A490 -

Type 1

Medium CarbonAlloy Steel,

Quenched and

Tempered

1/2 through

11/2120 130 150-170

ASTM A490 -

Type 1

Atmospheric

Corrosion Resistant

Steel,

Quenched and

Tempered

1/2 through

11/2120 130 150-170

ISO R898 -

Class 8.8

Alloy Steel,

Quenched and

Tempered

all sizes

through

11/2

85 92 120

ISO R898 -Class 10.9

Alloy Steel,

Quenched and

Tempered

all sizes

through

11/2

120 130 150

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