Cr12MoV is a high-alloy tool steel composed of iron, carbon, chromium, molybdenum, and vanadium. Typically solid with a silver-gray appearance, this steel features high hardness, high wear resistance, and good toughness. It is primarily used for making cold work dies, cutting tools, and measuring tools.
» AISI D2
» X165Cr-MoV12
» JIS SKD12
» X100CrMoV5
| C | Cr | SI | Mn | Mo | V | P | S | |
| Min | 1.45 | 11.00 | 0.20 | 0.20 | 0.40 | 0.15 | -- | -- |
| Typical | 1.60 | 11.70 | 0.40 | 0.40 | 0.55 | 0.20 | -- | -- |
| Max | 1.70 | 12.50 | 0.60 | 0.60 | 0.70 | 0.30 | 0.035 | 0.035 |
APPLICATIONS
- » Engine valves
- » Cutting tools
- » Stamping Dies
- » Drill Bits
- » Fasteners
- » Crusher Blades
FORM SUPPLIED
- » Round bar
- » Flat Bar
- » Coil Strips
- » Plates
- » Sheets
Available surface conditions : hot rolled, ground, peeled, turned, drawn, cold rolled
HEAT TREATMENT
- Annealing : Heat to 800-850°C, soak, then cool slowly to 600°C and air cool.
- Stress Relieving: Heat to 600-700°C, hold for 1-2 hours, then cool slowly
- Hardening: Preheat to 300-400°C and then 750-800°C. Austenitize at 1000-1050°C and hold for 15-30 minutes.
- Quenching : Air cool or oil quench; gas quench in a vacuum furnace.
- Tempering : Heat to 150-300°C, and hold for 1-2 hours. Multiple cycles are recommended.
| Tool | Hardening | Tempering |
| single edge cutting tools | 1220 ºC | 550-570 ºC |
| multi edge cutting tools | 1180-1220 ºC | 550-570 ºC |
| cold work tools | 1050-1150 ºC | 550-570 ºC |
PROCESSING
Cr12MoV can be worked as follows :
- Machining( grinding,turning,milling)
- Polishing
- Hot forming
- Electrical discharge machining
- Welding(special procedure incl. pre-heating & filler
materials of base material composition)
GRINDING
During Grinding, local heating of the surface, which can alter the temper, must be avoided. Grinding wheel manufacturers can provide advise on the choice of grinding wheels
SURFACE TREATMENT
Coating and Electroplating: For wear resistance and
hardness.
Heat Treatment: Induction hardening.
Machining: CNC for complex geometries.
DELIVERY HARDNESS
- » Typical soft annealed hardness is 250 HB
- » Cold drawn and cold rolled material is typically 10-40 HB harder
