Steel A515 Grade 55

Aging Procedure

Not applicable.

Annealing Procedure

Annealing is not covered by this specification. However the steel involved can be annealed at 1600 f and slow cooled.

Applications

Used for high strength plate that is fabricated into pressure vessels for intermediate and higher temperature service such as boilers.

Cold Workability

Plate material may be readily bent or cold formed as is typical of plain carbon steels.

Corrosion Resistance

This is essentially a plain carbon steel and is not corrosion resistant. It will rust unless protected.

Forgeability

Material is supplied as plate and not subjected to later forging.

Formability

The alloy is readily formed by conventional methods.

Hardening Procedure

This specification does not cover hardening by heat treatment and quenching, although the steel is capable of such.

Heat Treatability

Plate material to this specification is supplied in the "as rolled" or normalized or stress relieved condition. Further heat treatment is not covered by this specification.

Hot Workability

If need be this plate material could be hot worked. Consult the alloy supplier for temperature and treatment information.

Machinability

Machinability is good, similar to that of the plain carbon steels.

Other Mechanical Properties

PVQ

Principle Design Features

A515 covers carbon steel plate for use in pressure vessels at ambient and higher temperature service. The alloy involved for the specification is basically similar to AISI 1330 steel.

Tempering Procedure

Not applicable.

Weldability

This specification cover plate steel that is intended to be fabricated by welding. Thus it is readily weldable by standard methods.