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Carbon	1.4 - 1.6
Chromium	11 - 13
Cobalt	2.5 - 3.5
Iron	Balance
Manganese	0.6 max
Molybdenum	0.7 - 1.2
Phosphorus	0.03 max
Silicon	0.6 max
Sulphur	0.03 max
Vanadium	1 max

Principal 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.

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

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%.

Forming		Forming is by means of forging or machining

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

Heat Treatment		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).

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

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

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

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

Aging		Not applicable to this alloy.

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

Hardening		See "Heat Treating" and "Tempering".

Physical Data : [top]

Density (lb / cu. in.)	0.283
Specific Gravity	7.8
Melting Point (Deg F)	2600
Modulus of Elasticity Tension	29

There is no Mechnical data available for this grade.

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Nickel - www.nidi.org

Copper - www.copper.org

Titanium - www.titanium.org

Steel Lynx - www.mlc.lib.mi.us/~stewarca/steelynx.html

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