What is the difference between ASTM A529 and A36?
Cold Rolled ASTM-A1008 is a low carbon steel material that comes in formed shapes such as channel and angle, for general structural applications. The additional steps for cold rolling give the steel a finer finish and improved dimensional accuracy.
Hot rolled (HR) ASTM-A36 mild (low-carbon) steel contains up to 27% carbon – more than standard mild steel. It has a minimum yield point of 36K, and is easily weldable and formable. It is one of the most widely used structural steels in a range of applications, including support frames, machinery and equipment braces, and transportation frames. HR A36 is also available in galvanized form, for added corrosion resistance.
Hot rolled (HR) ASTM-A529 Grade 50 steel is stronger than A36, meeting the standard of 50K minimum yield strength. This steel is used for supports and structural components in bridges, buildings and other structures requiring increased strength. It can be welded, bolted, riveted, machined and fabricated easily.
P110 pipes shall be heat treated with full-body, full-length, as per API 5CT 10th edition quenched and tempered (simplified with Q) shall be adopted to the products. Normalized (N) or normalized and tempered (N&T) is not applicable for P110 casing and tubing.
Special chemical requirements for ERW P110 pipe are specified in Table E.4 in API 5CT, and other requirements specified in A.6 SR11.