Steel Bolts - ASTM Grades
ASTM steel bolts - proof and tensile strength.
ASTM Designation | Head Marking | Size Range (in) | Minimum Proof Strength (103 psi) | Minimum Tensile Strength (103 psi) | Material |
---|---|---|---|---|---|
A307 | 1/4 - 4 | Low carbon steel | |||
A325 type 1 | 1/2 - 1 1 1/8 - 1 1/2 |
85 74 |
120 105 |
Medium carbon steel, Q & T | |
A325 type 2 | 1/2 - 1 1 1/8 - 1 1/2 |
85 74 |
120 105 |
Low carbon martensite steel, Q & T | |
A325 type 3 | 1/2 - 1 1 1/8 - 1 1/2 |
85 74 |
120 105 |
Weathering steel, Q & T | |
A354 grade BC | Alloy steel, Q & T | ||||
A354 grade BD | 1/4 - 4 | 120 | 150 | Alloy steel, Q & T | |
A449 | 1/4 - 1 1 1/8 - 1 1/2 1 3/4 - 3 |
85 74 55 |
120 105 90 |
Medium carbon steel, Q & T | |
A490 type 1 | 1/2 - 1 1/2 | 120 | 150 | Alloy steel, Q & T | |
A490 type 3 | Weathering steel, Q & T |
- 1 psi (lb/in2) = 6895 Pa (N/m2)
- 1 inch = 25.4 mm
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