| Steel Grade | 10Ni3MnCuAl |
|---|---|
| Length | 19mm-5000mm |
| Width | 19mm-2350mm |
| Thickness | 20mm-900mm |
| Hardness | 38-42 HRC |
| MOQ | 1 piece |
| Lead Time | 1–3 days after confirmation |
| Shipping From | Dongguan City, China |

10Ni3MnCuAl pre-hardened plastic mold steel has a delivered hardness of 38–42 HRC. With the addition of copper and aluminum elements, it features excellent machinability and can achieve mirror polishing up to #8000, coupled with outstanding dimensional stability and superior texturing performance. It is suitable for mirror polishing molds, EDM molds for automotive parts, thin sheet blanking dies, etc. We provide one-stop processing services, including ground plate customization, heat treatment, and precision cutting.
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| Steel Grade | 10Ni3MnCuAl |
|---|---|
| Length | 19mm-5000mm |
| Width | 19mm-2350mm |
| Thickness | 20mm-900mm |
| Hardness | 38-42 HRC |
| MOQ | 1 piece |
| Lead Time | 1–3 days after confirmation |
| Shipping From | Dongguan City, China |
Full Machining Services
Comprehensive machining capabilities for complete mold steel processing.
Equipped with advanced machinery to ensure quality, precision, and consistency.
















Ample stock available and a wide range of models to choose from for your mold steel requirements.
Factors: grade · thickness · length/weight. Example: P20, 30×100×500 mm, Qty 2 → From US$ — (cut & pack)
Professional mold steel wholesale supplier with extensive inventory, competitive pricing, and reliable quality. Get cut-to-size steel bars delivered on time.
Get a QuoteCut-only: 1–3 days to ship. + Heat treatment: 5–7 days. Door-to-door: 5–10 business days (US/EU/AU)
Tolerance: ±1–2 mm. Guarantee: Free re-cut or refund if out of spec.