1.2601 Cold Work Tool Steel
Ledeburitic Cr-steel for high performance cutting tools, toughness better than D3, possibility of nitriding. This alloy possesses a very high compressive strength and is deep hardening.
Properties：
● It has excellent cutting performance, good compression resistance, stronger toughness than D3, and can be nitridized.
Applications：
● Suitable for cutting tools, stamping die, wood products, deep stamping tools, cold roll, measuring tools.
Parameters
Grade | Chemical Composition (%) | |||||||||
C | Si | Mn | Cr | Mo | V | P | S | W | ||
GB | Cr12MoV | 1.45~1.70 | ≦0.40 | ≦0.40 | 11.0~12.5 | 0.40~0.60 | 0.15~0.30 | ≦0.30 | ≦0.30 | - |
DIN | 1.2601 | 1.55~1.75 | 0.25~0.40 | 0.20~0.40 | 11.0~12.0 | 0.50~0.70 | 0.10~0.50 | ≦0.30 | ≦0.30 | 0.40~0.60 |
Specification | Round BarØ (mm) | Flat Bar (mm) | ||||||||
Hot Rolled | Hot Forged | EAF | ESR | |||||||
Ø12~Ø50 | EAF | ESR | Thickness | 20~200 | 20~450 | |||||
Ø50~Ø250 | Ø50~Ø650 | width | 80~610 | 610max | ||||||
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.70
Thermal conductivity [W/m.K]: 20.0
Electric resistivity [Ohm mm2/m]: 0.65
Specific heat capacity[J/g.K]: 0.46
Coefficient of Linear Thermal Expansion 10-6 oC-1
20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC |
10.5 | 11.0 | 11.0 | 11.5 | 12.0 |
Soft Annealing
Heat to 800-840oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 255.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 650oC, 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 980-1010oC followed by oil, air quenching or warm bath quenching. Hardness after quenching is 63-65 HRC.
Tempering
Tempering temperature: 150-400oC.
Tempering Temperature (oC) vs. Hardness (HRC)
100oC | 200oC | 300oC | 400oC |
64 | 62 | 60 | 58 |
Forging
Hot forming temperature: 1050-850oC.
Machinability
The machinability rating of 1.2601is roughly 20-25% that of free machining carbon steel 1018. Due to its abrasion resistant nature, machining in the hardened condition should be limited to finish grinding.
