AISI D2

Typical analysis

C	Cr	V	Mo
1.50	11.50	0.80	0.75

A deep hardening steel with excellent toughness, outstanding wear resistance and good machining properties. Tungsten-molybdenum-vanadium variant of the high-carbon, high-chromium type of steel.

Typical applications

High-efficiency cutting tools ( dies and punches ), blanking tools, wood working tools, shear blades for cutting thin materials, thread rolling dies, drawing, deep drawing and extrusion tools, pressing tools, cold rolls for multiple roller stands, gauges, plastic mold and so on.

Forging and Heat Treating Processes

Thermal Process	Temperature (Celsius)
Forging	1050°C - 850°C
Annealing	800°C - 850o Tensile strength as Annealed ( 44 - 51 tons per Sq. inch )
Hardening	Furnace cooling to 600°C at about 10°C per hour
Tempering ( maximum wear )	175°C - 205°C
Tempering ( maximum toughness )	Double temper at 480°C
Quenching medium	Air
Obtainable hardness ( HRC )	63 - 65
Wear resistance	Very high
Toughness	Low
Distortion in heat treating	Lowest
Machinability	Low
Red hardness	High