Description
CrWMn is the most commonly used high carbon alloy tool steel for making molds. CrWMn steel has high hardenability. Since tungsten forms carbides, this steel has more excess carbides and higher hardness and wear resistance than chromium steel and 9SiCr steel after quenching and low-temperature tempering.
CrWMn Worldwide equivalents
| country / region | China | USA | Germany | Japan | Czechia |
| Standard | GB | ASTM | DIN | JIS | CNS |
| Grade | CrWMn | O7 | 105WCr6 | SKS31/SKS2 | SKS31/SKS2 |
CrWMn Steel Chemical Composition
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | W(%) | Cu(%) |
| 0.90～1.05 | ≤0.40 | 0.80～1.10 | ≤0.030 | ≤0.030 | 0.90～1.20 | ≤0.20 | 1.20～1.60 | ≤0.30 |
Mechanical Properties
| Rp0.2 (MPa) | Rm (MPa) | ImpactKV (J) | Elongation A (%) | A Z (%) | Delivery | Hardness HB |
| 792 (≥) | 735 (≥) | 31 | 12 | 33 | Solution & Aging, Ann, Ausaging, Q+T | 212 |
Physical Properties
| Property | Densitykg/dm3 | Temperature T°C/F | Specific heatJ/kgK | Electric resistanceµΩ·cm |
| 371(≥) | 981(≥) | 23 | 44 | Solution and Aging,Annealing,Ausaging,Q+T,etc |
| Temp.°C/°F | Creep strain limit(10000h)(Rp1,0)N/mm2 | Creep rupture strength(10000h)(Rp1,0)N/mm2 | Thermal conductivity W/mK | Modulus of elasticitykN/mm2 |
| 389 | 363 | 414 | 41 | 234 |
Features and Application
CrWMn steel contains tungsten, which helps to preserve fine grains and obtain better toughness. Therefore, the cutting tool made of CrWMn steel has less blade collapse and can better maintain the shape and size of the blade.
CrWMn steel is used to manufacture tools that do not heat the cutting edge violently during work and measuring tools and cutting tools that require no deformation during quenching, such as making knives, filament cones, long reamers, special milling cutters, dies and other types of special tools, as well as tools for cutting soft non-metallic materials.
CrWMn Products
| Product type | Products | Dimension | Processes | Deliver Status |
| Plates/Sheets | Plates/Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
| Coil/Strip | Steel Coil/Steel Strip | 0.03-16.0x1200mm | Cold-Rolled&Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes/Tubes | Seamless Pipes/Tubes,Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging,Q+T, ACID-WASHED |
Our Services
1. The price is determined according to the material, size, finishing process and different payment methods
2. Each material has been ut tested
3. We have every kind of material in stock, so we can deliver it in time.
4. The size of steel can be customized according to customer requirements, and the minimum order quantity and specification model can be developed / produced according to international, Chinese or industrial standards
