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ASTM A501 Welded And Seamless Steel Structural Tubing

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 analysisProduct analysis
carbon  max0.260.30
Phosphorus max0.0350.045
sulfur max0.0350.045

copper,when copper steel is 

specifie min

0.200.18

2.Tensile requirements


Tensile strength min (Mpa)400
Yield strength min (Mpa)250
Elongation in 2in  min % A23
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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