4Cr5MoSiV Tool Steel
The chemical ratio of 4Cr5MoSiV tool steel is particularly strengthened with Mo, Si and V elements, which endows it with excellent high-temperature strength, thermal hardness and thermal fatigue resistance, making it suitable for various mold applications that require high temperature, high pressure and repeated thermal shock.
4Cr5MoSiV Tool Steel – Product Forms & Inventory Specifications
Supply Condition
- Annealed
- Machined
Available Forms
- Round bars
- Plates / Flat bars
- Custom-cut pieces
Processing Services
- Sawing.
- Rough machining.
- Custom heat treatment.
Standard Size Range (Availability varies by stock)
- Diameter (Round bar): Φ10 mm – Φ65 mm / Φ70 mm – Φ400 mm / Φ500 mm / Φ600 mm / Φ700 mm.
- Plate/Flat Thickness: 8 – 45 mm / 50 – 500 mm.
- Width: 50 – 1000 mm / 50 – 1500 mm.
- Forged Discs: Up to Ø1200 mm.
4Cr5MoSiV Tool Steel – Forming Methods
- Hot Rolled
- Hot Forged
4Cr5MoSiV Tool Steel – Surface Finish Options
- Black.
- Grinded.
- Sandblasted.
- Turned/Machined/Milled/Bright.
What is 4Cr5MoSiV Tool Steel?
4Cr5MoSiV is a domestic hot work tool steel developed in accordance with the GB/T 1299 series standards. It is one of the most important steel grades in China corresponding to international H13 (DIN 1.2344 / JIS SKD61 / ASTM H13).
International Equivalent Grades of 4Cr5MoSiV Tool Steel
Chemical Composition of 4Cr5MoSiV Tool Steel
4Cr5MoSiV Steel Product Specifications
4Cr5MoSiV Steel Heat Treatment and Performance Indicators
- Annealing: 860-890 °C slow cooling followed by furnace cooling. Annealing hardness approximately ≤229 HBW (for ease of machining).
- Quenching: 1020-1080 °C followed by oil cooling or air cooling, with hardness reaching 56-58 HRC; The hardness of large cross-sections is slightly lower.
- Tempering: Double tempering at 560-580 °C, with the final hardness stabilized at 47-49 HRC; Low-temperature tempering can also be used to relieve stress.
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