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ASTM A501 Welded And Seamless Steel Structural Tubing
This specification covers hot-formed welded and seamless carbon steel square, round, rectangular, or special shape structural tubing for welded, riveted, or bolted con-struction of bridges and buildings, and for general structural purposes.
Description
1.Chemical requirements
Element | Composition % | |
| Heat analysis | Product analysis | |
| carbon max | 0.26 | 0.30 |
| Phosphorus max | 0.035 | 0.045 |
| sulfur max | 0.035 | 0.045 |
copper,when copper steel is specifie min | 0.20 | 0.18 |
2.Tensile requirements
| Tensile strength min (Mpa) | 400 |
| Yield strength min (Mpa) | 250 |
| Elongation in 2in min % A | 23 |
| Elongation in 8in min % A | 20B |
A Elongation may be determined in a gage length of either 2 in.(50.8 mm)or 8 in (203.2 mm)at the manufacturer's option
B For material under 5/16 in (7.9 mm) in thickness, a deduction from the percentage elongation of 1.25 % in 8 in (203.2 mm) specified in Table 2 shall be made for each decrease of 1/32 in (0.79 mm) of the specified thickness under 5/16 in (7.9 mm) finished tubing manuafcauted in accordance with this specification, or an analysis may be made from flat-rolled stock from which the welded tubing is manufactured.
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