A36 steel

A36 steel is the most commonly used mild and hot-rolled steel. A36 steel has excellent welding properties and is suitable for grinding, punching, tapping, drilling and machining processes. Yield strength of A36 steel is less than that of cold roll C1018, thus enabling A36 steel to bend more readily than C1018. Normally, larger diameters in A36 steel are not produced since C1018 hot roll rounds are used.

A36 steel

Any standard carburizing and hardening methods of AISI 1018 steel is suitable for A36 steel.

A36 steel is subjected to the following processes:

Normalizing at 899°C – 954°C (1650°F-1750°F)
Annealing at 843°C – 871°C(1550°F-1600°F)
Stress relieving at 677°C – 927°C(1250°F-1700°F)
Carburizing at 899°C – 927°C (1650°F-1700°F)
Hardening at 788°C – 816°C(1450°F-1500°F)

The machinability rate of A36 steel is estimated to be 72%, and the average surface cutting feed of A36 steel is 120 ft/min. Machining of A36 steel is not as easy as that of AISI 1018 steel.

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