Description
Cr12Mo1V1 is a high carbon and high chromium cold work mold steel widely used internationally. It belongs to ledeburite steel. It has high hardenability, hardenability, and wear resistance. High-temperature oxidation resistance is good. Good corrosion resistance after quenching and polishing. Heat treatment deformation is small.
Cr12Mo1V1 Worldwide equivalents
| country / region | USA | German | Japan | China | ISO |
| Standard | ASTM A681 | DIN 17350 | JIS G4404 | GB/T 1299 | ISO 4957 |
| Grade | D2 | 1.2379 | SKD11 | Cr12Mo1V1 | 160CrMoV12 |
Cr12Mo1V1 Steel Material Chemical Composition
| C | Si | Mn | p | s | Cr | Mo | V | Other | |
| % | 1.40-1.60 | ≤0.60 | ≤0.60 | ≤0.030 | ≤0.030 | 11.00-13.00 | 0.70-1.20 | 0.5-1.10 | Co：≤1.00 |
Cr12Mo1V1 Mechnical Properties
| annealing | ≤255HB | Indentation diameter | ≥3.8mm |
| Quenching | ≥59HRC | Modulus of elasticity | 207000MPa |
| Quality constant pressure hot melt Cp | 461J/(kg·K) |
Physical properties
| critical point | Ac1 | Acm | Ar1 | Arcm | Ms |
| temperature/℃ | 810 | 810 | 810 | 810 | 810 |
| temperature/℃ | 20~100 | 20~200 | 20~300 | 20~400 |
| Coefficient of expansion/℃－1 | 10.5×10－6 | 11.5×10－6 | 11.9×10－6 | 12.2×10－6 |
Heat treatment process
Annealing
After the workpiece is rough-processed, it is heated to 600~650°C and kept for 2h. When the furnace temperature is cooled to 500°C, the furnace is cooled by air.
Quenching
When the workpiece is slowly heated to 600°C, it is warmed up for the first time by keeping it warm for 20 minutes. When the temperature rises to 850°C, keep it warm for another 30 minutes. Carry out the second preheating, and finally heat up to 1020~1040℃, keep it for 25~40 minutes, and finally air-cooled out of the furnace.
Temper
It should be tempered immediately after quenching, and the tempering should be at least twice, and the holding time should be at least 2 hours each time.
Application:
Cr12Mo1V1 is suitable for the manufacture of various high-precision, long-life cold-work dies, cutting tools, and measuring tools. For example, punching dies with complex shapes. Cold extrusion dies.
