H13
Standard
ASTM A681 / 4Cr5MoSiV1
Hardness
Annealed ≤229HB, Q&T HRC44-52
Introduction
The most widely used hot work die steel with excellent hot strength, thermal fatigue resistance, and hardenability. Maintains high strength and hardness at elevated temperatures. Quenching at 1020-1050°C, tempering at 550-650°C.
Applications
Aluminum/magnesium die casting dies, hot extrusion dies, hot forging dies, plastic molding dies, hot shear blades, mandrels.
Chemical composition
| Element | Min | Max | Unit | Note |
|---|---|---|---|---|
| C | 0.32000 | 0.45000 | % | — |
| Si | 0.80000 | 1.20000 | % | — |
| Mn | 0.20000 | 0.50000 | % | — |
| Cr | 4.75000 | 5.50000 | % | — |
| Mo | 1.10000 | 1.75000 | % | — |
| V | 0.80000 | 1.20000 | % | — |
| P | — | 0.03000 | % | — |
| S | — | 0.03000 | % | — |
A dash means not provided, not zero. Confirm specifications before ordering.