ASTM Designation No.

Size Range, Inclusive, in.

Minimum Proof Strength, kpsi

Minimum Tensile Strength, kpsi

Minimum Yield Strength, kpsi

Material

A307

.25-1.5

33

60

36

Low Carbon

A325, Type 1

0.5-1.0, 1.125-1.4

85, 74

120, 105

92, 81

Medium Carbon, Q&T

A325, Type 2

0.5-1.0, 1.125-1.5

85, 75

120, 106

92, 82

Low Carbon Martensite, Q&T

120, 107

92, 83

Weathering Steel, Q&T

A354,
Grade BC

A354, Grade BD

0.25-4.0

120

150

130

Alloy Steel, Q&T

A449

0.25-1.0, 1.125-1.5, 1.75-3.0

85, 74, 55

120, 105, 90

92, 81, 58

Medium Carbon, Q&T

A490, Type 1

0.5-1.5

120

Alloy Steel, Q&T