| Steel Grade | M310H |
|---|---|
| Length | 19mm-5000mm |
| Width | 19mm-2350mm |
| Thickness | 20mm-900mm |
| Hardness | 32-36 HRC |
| MOQ | 1 piece |
| Lead Time | 1–3 days after confirmation |
| Shipping From | Dongguan City, China |

M310H stainless mold steel is supplied in pre-hardened condition with a hardness of 32–36 HRC, providing excellent corrosion resistance, good toughness, and stable performance in humid or acidic environments. It is well suited for molding corrosive plastics such as PVC, PP, PE, PC, and PMMA. Commonly used for precision plastic injection molds requiring high surface quality and long service life. Supplied as mold steel blocks with cut-to-size machining.
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Availability: In stock
| Steel Grade | M310H |
|---|---|
| Length | 19mm-5000mm |
| Width | 19mm-2350mm |
| Thickness | 20mm-900mm |
| Hardness | 32-36 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.