Tool Steel D5

Aging Procedure

Not applicable to this alloy.

Annealing Procedure

Anneal at 1625 F followed by slow cooling in the furnace at a rate of cooling of 40 F per hour or less.

Applications

Applications include thread rolling, blanking or forming dies operating at temperatures below 900 F.

Cold Workability

Cold working with the alloy in the annealed condition may be accomplished by conventional methods.

Forgeability

Forge at 1950 F down to 1750 F. Do not forge below 1700 F.

Formability

Forming is by means of forging or machining

Hardening Procedure

See "Heat Treating" and "Tempering".

Heat Treatability

Preheat very slowly up to 1500 F then increase temperature to 1850 F and hold at temperature for 20 to 45 minutes. Air cool (air quench).

Hot Workability

No data other than for "Forging". Contact the alloy supplier.

Machinability

Machinability of D5 is relatively poor. Using water hardening (W group) simple alloy tool steel as a base of 100% the D5 alloy would rate 40%.

Principle Design Features

This alloy is one of the Cold Work, high Carbon/ Chromium type tool steels. It is capable of deep hardening with minimal distortion from air quenching after heat treatment. It has low resistance to heat softening and should not be used at elevated temperatures.

Tempering Procedure

Temper between 400 F (Rockwell C 61) and 1000 F (Rockwell C 54).

Weldability

The alloy may be welded. Consult the alloy supplier for proper procedures.