ASTM A53 is a grade of steel produced in accordance with ASTM standards in the United States and is classified as American Standard.
Among them, A53-F corresponds to domestic q235 steel, A53-A corresponds to domestic 10# steel, and A53-B corresponds to domestic 20# steel.
[Q235] common carbon structural steel, also known as A3 steel. Q represents the yield limit of this material, followed by 235, which means the yield value of this material is about 235 MPa. And with the increase of the thickness of the material to make its yield value decreases, due to moderate carbon content, overall performance is better, strength, plasticity and welding properties are well matched, the most widely used.
【10# steel】Grade number: 10 steel; Execution standard: GB/T699-1999 "High quality carbon structural steel"; No. 10 steel is good in plasticity and toughness, easy hot and cold forming, good machining performance after normalizing or cold working Excellent weldability, no temper brittleness, poor hardenability and hardenability.
Parts that require low stress and high toughness, such as automobile bodies, reservoirs, deep-drawing containers, pipes, gaskets, etc., can be used for cold rolling, cold punching, cold heading, cold bending, and hot rolling. It can also be used as carburizing parts, carbonitriding parts, etc. with low strength of the heart.
[20 # steel] Grade: 20 steel; Standard: GB/T 699-1999 "high-quality carbon structural steel"; the steel is a high-quality low-carbon carbon steel, cold extrusion, carburizing hardened steel. The steel has low strength, good toughness, plasticity and weldability. The tensile strength is 355~500MPa and the elongation is ≥24%.