ASTM A554 Stainless Steel Square Tube
ASTM A554 stainless steel rectangular tube yield strength corresponding to a permanent offset of 0.2 % of the gage length of the specimen or to a total extension of 0.5 % of the gage length under load shall be determined. ASTM A554 304 Tubes are made from flat-rolled steel by an automatic welding process, without any filler metal addition.