Cold Work Tool Steel

D2 steel is extremely wear safe yet not as intense as lower alloyed steels. D2 tool steel solidifies in air with a low request of development and offers a measure of erosion resistance when cleaned.

The high percentage of chromium gives it mild corrosion-resisting properties in the hardened condition.The mechanical properties of D2 are exceptionally sensitive to heat treatment. D2 steel is accessible in de-carb free adjusts, pads, and squares, and also ground flat stock and drill rod.

Chemical Composition

Element	Min	Max
Carbon, C	1.55	1.75
Manganese, Mn	0.20	0.40
Silicon, Si	0.25	0.40
Molybdenum, Mo	0.50	0.70
Chromium,Cr	11.00	12.00
W	0.40	0.60
Vanadium, V	0.10	0.50
Co	--	--

Physical Properties

Properties	Metric	Imperial
Density	7.7 x 1000 kg/m3	0.278 lb/in3
Melting point	1421°C	2590°F

Mechanical Properties

Mechanical Properties	Metric	Imperial
Hardness, Knoop (converted from Rockwell C hardness)	769	769
Hardness, Rockwell C	62	62
Hardness, Vickers	748	748
Izod impact unnotched	77.0 J	56.8 ft-lb
Poisson's ratio	0.27-0.30	0.27-0.30
Elastic modulus	190-210 GPa	27557-30457 ksi

Thermal Properties

Properties		Conditions
		T (°C)	Treatment
Thermal expansion	10.4 x 10 -6 /ºC	20-100	-

Features

Heat Treatment

Forging

Annealing

Martempering

Final Grinding

Hardening

Stress Relieving