X153CrMoV12, 1.2379, AISI D2 - tool steel
AISI D2, 1.2379, X153CrMoV12 - Cold-working tool steel according to ISO 4957.
| Standard | Steel Grade | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical composition % | |||||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | Ni: | V: | W: | Co: | |
| ISO/EN | 1.2379 - X153CrMoV12 - X160CrMoV12-1 | ||||||||||
| 1.45 - 1.60 | 0.2 - 0.6 | 0.1 - 0.6 | <0.03 | <0.03 | 11.0 - 13.0 | 0.7 - 1.0 | - | 0.7 - 1.0 | - | - | |
| DIN | X165CrMoV12 - 1.2601 | ||||||||||
| 1.55 - 1.75 | 0.2 - 0.4 | 0.25 - 0.40 | <0.03 | <0.03 | 11.0 - 12.0 | 0.5 - 0.7 | - | 0.1 - 0.5 | 0.4 - 0.6 | - | |
| DIN | X165CrCoMo12 - 1.2880 | ||||||||||
| 1.55 - 1.75 | 0.2 - 0.4 | 0.25 - 0.40 | <0.035 | <0.035 | 11.0 - 12.0 | 0.5 - 0.6 | - | - | - | 1.2 - 1.4 | |
| ASTM | AISI D2 - UNS T30402 | ||||||||||
| 1.4 - 1.6 | 0.1 - 0.6 | 0.1 - 0.6 | <0.03 | <0.03 | 11.0 - 13.0 | 0.7 - 1.2 | - | 0.5 - 1.1 | - | <1.0 | |
| PN | NC11LV | ||||||||||
| 1.5 - 1.7 | 0.15 - 0.45 | 0.15 - 0.40 | <0.03 | <0.03 | 11.0 - 13.0 | 0.7 - 1.0 | - | 0.6 - 0.8 | - | - | |
| GOST | Ch12MF - Х12МФ | ||||||||||
| 1.45 - 1.65 | 0.15 - 0.45 | 0.1 - 0.4 | <0.03 | <0.03 | 11.0 - 12.5 | 0.4 - 0.6 | <0.35 | 0.15 - 0.30 | <0.2 | - | |
| NF | Z160CDV12 - X160CrMoV12 | ||||||||||
| 1.45 - 1.70 | 0.15 - 0.45 | 0.1 - 0.4 | - | - | 11.0 - 13.0 | 0.7 - 1.1 | - | 0.7 - 1.0 | - | - | |
| UNE | X160CrMoV12 - F-5211 | ||||||||||
| 1.45 - 1.75 | 0.15 - 0.45 | 0.1 - 0.4 | <0.03 | <0.03 | 11.0 - 13.0 | 0.7 - 1.0 | - | 0.5 - 0.8 | - | - | |
| GB/T | Cr12Mo1V1 - T21202 | ||||||||||
| 1.4 - 1.6 | <0.6 | <0.6 | <0.03 | <0.03 | 11.0 - 13.0 | 0.7 - 1.2 | - | 0.5 - 1.1 | - | - | |
| GB/T | Cr12MoV - T21201 | ||||||||||
| 1.45 - 1.70 | <0.4 | <0.4 | <0.03 | <0.03 | 11.0 - 12.5 | 0.4 - 0.6 | - | 0.15 - 0.30 | - | <1.0 | |
1.2379, X153CrMoV12, AISI D2 - specification and description
Alloyed cold working tool steel with high carbide formers content. It is characterized by high resistance to abrasive wear, greater ductility, extremely low tendency to deformation and hardening cracks, very high hardenability, as well as significant dimensional stability during hardening. In addition, it shows the durability of the blade, even as a result of overheating of the tool during intensive use, thanks to its high chromium content, which contributes to the reduction of thermal conductivity. Another result of the high chromium content is corrosion resistance in air and fresh water. A cheaper alternative grade without content of Molybdenum and Vanadium is NC10 / X165CrV12 / 1.2201.
Steel is ideally suited for the manufacture of tools that require high abrasion resistance and shape stability during hardening. It is used for making punches, cutters, draughts, reamers, anvils for forging scythes, tools for cutting horns, marble, milling cutters, retractors, rollers, jaws for cold rolling of threads, knives for the production of nails, cutting boards for blanking dies of various shapes, tools for cutting paper and plastics, cold working dies, deburring machines, drawing dies, and gauges. Welding is hard and should be considered only as a mean to repair a damaged tool.
Mechanical and physical properties of AISI D2, 1.2379, X153CrMoV12
- Hardness of steel after softening annealing: ≤ 255 HB.
- Hardness after hardening: ≥ 60 HRC.
- Hardness after hardening and tempering at temperature:
- 200C = ≥ 60 HRC
- 250C = 58.2 HRC
- 300C = 58 HRC
- 350C = 58 HRC
- 400C = 58.5 HRC
- 450C = 58.8 HRC
- 500C = 55.2 HRC
- 550C = 50 HRC
- Electrical resistivity:: 3.15 μΩ*m
- Density: 7.60g/cm3
- Specific heat capacity: 460 J/kg*K
- Linear expansion coefficient: 10.00 (10^6)/℃
- Melting temperature: 1560℃
Heat treatment - processes and temperatures:
- Softening annealing at a temperature of 820 - 860°C.
- Relief annealing in the range of 600 - 700°C.
- Hardening at a temperature of 960 - 1030°C.
- Tempering in air at a temperature of 220 - 550°C.
Substitutes, equivalents and other species designations
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