Used for general structural purposes, for use in riveted, bolted, or welded construction of buildings, bridges, machinery, etc. Used for booms, rails, braces, frames, brackets, cross-members, liners, truck trailers, truck beds, racks, etc. Grade: A-36 Finish: Hot Rolled MACHINEABILITY AND WELDABILITY ASTM A36 has a machinability rating of 72%, based on 1212 at 100%. Average surface cutting feed 120 ft/min.
ASTM A36 is easily welded by all welding processes and the welds and joints produced are of extremely high quality.
HEAT TREATING ASTM A36 is generally not heat treated but is typically stress relieved prior to grinding or machining or after welding and prior to machining. ASTM A-36 can be carburized, however, for a higher surface hardness.
Stress Relieve 1100°-1250°F. Typical Stress relieve soak time - one hour per inch of thickness.
Carburize 1650°-1700° F.
