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1.2363 Cold Work Tool Steel

This alloy is one of the cold work, medium air hardening type tool steels. It contains chromium and molybdenum with a relatively high (1 %) carbon content and is capable of deep hardening from air quench so as to minimize distortion.

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Properties：

● Vacuum degassing, pure steel, ball fire degradation suitable for cutting, good wear resistance, strong toughness.

Applications：

● Suitable for complex or high precision die, stamping die, claw chuck, woodworking cutting tools, injection tools, hammer, industrial cutting tools and measuring tools.

Parameters

Grade		Chemical Composition (%)
Grade		C	Si	Mn	Cr	Mo	V	P	S
GB	Cr5Mo1V	0.95~1.05	≦0.50	≦1.00	4.75~5.50	0.90~1.40	0.15~0.50	≦0.03	≦0.03
ASTM	A2	0.95~1.05	0.10~0.50	0.40~1.00	4.75~5.50	0.90~1.40	0.15~0.50	≦0.03	≦0.03
DIN	1.2363	0.90~1.05	0.20~0.40	0.40~0.70	4.80~5.50	0.90~1.20	0.10~0.30	≦0.03	≦0.03
ISO	2260	0.95~1.05	0.15~0.30	0.45~0.75	5.00~5.50	1.00~1.20	0.15~0.25	≦0.03	≦0.02
JIS	SKD12	0.95~1.05	≦0.40	0.60~0.90	4.50~5.50	0.80~1.20	0.20~0.50	≦0.03	≦0.03
Specification		Round BarØ (mm)						Flat Bar (mm)
		Hot Rolled		Hot Forged					EAF	ESR
		Ø12~Ø50		EAF		ESR		Thickness	20~200	20~450
		Ø12~Ø50		Ø50~Ø250		Ø50~Ø650		width	80~610	610max

Physical properties (average values) at ambient temperature
Density [g/cm³]: 7.70
Thermal conductivity [W/m.K]: 26.0

Soft Annealing

Heat to 800-840^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 230.

Stress Relieving

Stress relieving to remove machining stresses should be carried out by heating to 650^oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening

Harden from a temperature of 930-970^oC followed by air, oil, warm bath (500-550^oC) quenching. Hardness after quenching is 63 HRC.

Tempering

Tempering temperature: 150-550^oC

Tempering Temperature (^oC) vs. Hardness (HRC)