Steel A572 Grade 42

Aging Procedure

Not applicable.

Annealing Procedure

Annealing, if required, can be done at 1700 f and slow furnace cooled.

Applications

Used for structural steel shapes in the construction of bridges, building or similar structures. It may be joined by riveting, bolting or welding.

Cold Workability

Grade 42 is more difficult to cold work than ordinary plain carbon steel. However it can be bent or shaped successfully but requires more force than for plain carbon steel.

Forgeability

This steel is supplied in plate, shapes and bar forms. It is not subsequently forged by the user.

Formability

This steel contains more alloying elements than plain carbon steel and thus is somewhat more difficult to form.

Hardening Procedure

Hardens by cold working or by heat treatment, quench and tempering per ASTM A514.

Heat Treatability

This steel is used in the "as-supplied" condition. However it is possible to obtain higher level of strength by specifying Quenched and Tempered steel plate as per reference specification ASTM A514 which calls for heating at not less than 1650 F and quenching in water or oil followed by tempering.

Hot Workability

Hot working may be done if necessary. Consult the steel supplier for information.

Machinability

Machinability of Grade 42 alloy is fair. It is basically like AISI 8615 low alloy steel.

Other Mechanical Properties

A high strength low alloy, columbium-vanadium structural steel specification.

Principle Design Features

ASTM A572 covers structural quality, high strength, columbium-vanadium low alloy steel.

Tempering Procedure

Refer to ASTM A 514 for reference on quenched and tempered steel plate. Tempering of the quenched steel is done at a temperature of 1200 to 1300 F.

Weldability

Weldable by all of the standard methods.