H12 is a chromium hot work tool steel engineered for strong hot hardness and wear resistance. It retains strength at elevated temperatures and resists heat checking during cyclic heating and cooling. The grade offers good hardenability for uniform properties in larger sections. Its balanced composition supports reliable machining and consistent heat treatment response. H12 is widely used for die casting dies, hot extrusion tooling, and forging dies. It performs well in hot shear blades, mandrels, and inserts where wear resistance is critical. Built for demanding service, H12 helps extend tool life and reduce downtime.
| STANDARDS | X37CrMoW5-1 | H12 | DIN 2606 | AISI H12 | AFNOR 32CDV12-28 | JIS SKD62 |
|---|
| Element | Range |
|---|---|
| C | 0.30-0.40 |
| Si | 0.80-1.25 |
| P | 0.003 max |
| Cr | 4.75-5.50 |
| W | 1.00-1.70 |
| Mo | 1.25-1.75 |
| V | 0.20-0.50 |
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