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Offers high dimensional stability with excellent polishing characteristics, photo-etching, and EDM performance. Can be pre-hardened for delivery, ensuring good cleanliness. Through calcium treatment, cleanliness is further enhanced, machining performance is improved, and tool wear is reduced.
Used for manufacturing medium- to large-sized plastic moulds and tooling with good machinability, uniform hardness and long service life. Suitable for complex shapes such as plastic injection moulds, blow moulds, compression moulds, die-casting moulds, mould bases and automotive components.
DIN 1.2311 (P20) is a widely used plastic mould tool steel known for its excellent machinability, polishability and uniform hardness. Supplied in pre-hardened condition, it reduces processing time and improves productivity in mould manufacturing. It is commonly used for injection moulds, die casting moulds and large plastic tooling applications. Bharat Special Steel is a trusted supplier of DIN 1.2311 P20 tool steel in India, offering ready stock and reliable delivery across Delhi NCR and pan India.
| C | Si | Mn | Cr | Mo | P | S |
|---|---|---|---|---|---|---|
| 0.35–0.45 | 0.20–0.40 | 1.30–1.60 | 1.80–2.10 | 0.15–0.25 | 0.03 | 0.02 |
Soft Annealing: 871–899°C, furnace cooling to 400°C.
Austenitizing: 830–870°C.
Quenching: Oil / Air.
Tempering: 2–3 times at 500–650°C.
Working hardness: 28–34 HRC.
Annealed (+A): ≤ 230 HB.
Quenched & Tempered (+QT): 28–32 HRC.
Higher hardness: 32–36 HRC.
Round: Dia 20 – Dia 500 mm
Flat / Block: 50 – 500 mm
