1.1 This specification covers carbon-manganese steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of buildings and for general structural purposes.
1.2 Material under this specification is available in two grades:
Grade | Yield Strength, | Thickness |
50 [345] | 50 [345] | Plates to 1 in. [25 mm] thick |
|
| Bars to 31/2 in. [90 mm] |
|
| Shapes with flange or leg thickness to |
55 [380] | 55 [380] | Plates to 1 in. [25 mm] thick |
|
| Bars to 38201;in. [75 mm] |
|
| Shapes with flange or leg thickness to |
1.3 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.
1.4 The values stated in either inch-pound units or SI units are to be regar......
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