H12 Tool Steel could be a five-hitter Cr, general hot work steel that is characterized by wonderful effect strength. It contains less vanadium than the broadly utilized H13 hot work tool steel, and furthermore, the tungsten content gives higher temper resistance. It has smart resistance to thermal fatigue cracking (heat checking) and excellent resistance to gross cracking and thermal shock once water-cooled in commission. H12 hot work tool steel is normally prescribed for warm tooling applications wherever most resistance from cracking is required. Such applications grasp die casting, hot punches, hot shear cutting edges, shaping dies, extrusion tooling and hot gripper die.
ASTM/AISI H12 Steel is deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment. H12 tool steel material has good resistance to thermal fatigue cracking (heat cracking) and excellent resistance to gross cracking and thermal shock when the water cooled in service.
- Magnificent Resistance to Wear
- High Strength at Elevated Temperature
- Homogenizing with High Toughness
- Additional Fine Structure without Grain-Boundary Carbide
H12 Tool Steel Supply Range
| Diameter (mm) | Thickness (mm) | Width (mm) |
| 6 – 500 | 6 – 400 | Max 810 |
H12 Tool Steels Standard and Relevant Steel Specifications
| Standards | DIN | AISI | JIS |
| X37CrNiW51 | 1.2606 | H12 | SKD62 |
H12 Tool Steels Chemical composition
| C | Si | Mn | P | S | Cr | Mo | V | W |
| 0.32-0.40 | 0.90-1.20 | 0.30-0.60 | ≤0.030 | ≤0.030 | 5.00-5.60 | 1.30-1.60 | 0.15-0.40 | 1.20-1.40 |
Heat Treatment
| Soft annealing | Temperature(°C) | Cooling | Hardness |
| 750 – 790 | furnace | max. 230 HB | |
| Forging | Temperature(°C) | Cooling | |
| 900 – 1100 | furnace | ||
| Hardening | Temperature(°C) | Cooling | Tempering |
| 1020 – 1050 | oil or air | see tempering diagram |
Applications
Hot tooling applications where maximum resistance to cracking is required. Such applications include hot punches, die casting dies, forging die, hot shear blades, and extrusion tooling.
Contact
If you have any H12 Tool Steel inquiries and questions for Price, Application, hot treatment, Please don’t hesitate to contact us.
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