Are there any differences between steel grades ASTM A572 grade 50 and ASTM A992?
There are differences, although the two materials are similar. ASTM A992 should be specified for all W-shapes used today. It is like ASTM A572 grade 50, but has better controls on chemistry and mechanical properties. It includes minimum values for yield and tensile strengths, a maximum ratio for yield strength to tensile strength, and a maximum carbon equivalent value. It is also less expensive than ASTM A572 grade 50 (and ASTM A36) for wide flange shapes. See also FAQ 1.3.5.
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