Plastic Mould Steel
DIN 1.2311
Steel Properties: Pre-hardened plastic mould steel, hardness in as delivered condition 280 to 325 HB, good machinability, suitable for texturing, better polishability.
Applications: Plastic moulds, mould frames for plastic mould and pressure casting moulds and recipient sleeves.
Hardness HB: Max 235
| C(％) | S(％) | P(％) | Si(％) | Mn(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|
| 0.35 ～ 0.45 | ≤0.035 | ≤0.035 | 0.20 ～ 0.40 | 1.30 ～ 1.60 | 1.80 ～ 2.10 | 0.15 ～ 0.25 |
DIN 1.2738
Steel Properties: Pre -hardened plastic mould steel with 1% Nickle condition 280 to 325 HB, good machinability, suitable for texturing, good polishability also available with hardness of 360 - 400HB.
Applications: Large plastic moulds with deep engravings and intensive impacts on the core. 1.2738 is the logical development of 1.2311, a pre – hardened plastic mould steel for use in large moulds, which also have to display high core strength. The additional nickel content to 1 % increase through hardening.
1.2738 is a Micro–alloyed, Vaccum–degassed steel with the following excellent Features: Good Machinability, Outstanding Polishability, Good Texturing Properties.
Hardness HB: Max 235
| C(％) | S(％) | P(％) | Si(％) | Mn(％) | Ni(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|---|
| 0.35 ～ 0.45 | ≤0.035 | ≤0.035 | 1.20 ～ 1.40 | 1.30 ～ 1.60 | 0.90 ～ 1.20 | 1.80 ～ 2.10 | 0.15 ～ 0.25 |
DIN 1.2711 (36 – 40 Hrc)
Steel Properties: Pre-hardened plastic mould steel, hardness in as-delivered condition 355 to 400 HB (square, flat) and 370 – 410 HB (round). Increased compressive strength in comparison to 1. 2738, good polishability.
Applications: Plastic moulds with increased demands on compression strength and wear resistance.
| C(％) | S(％) | P(％) | Si(％) | Mn(％) | Ni(％) | Cr(％) | Mo(％) | V(％) |
|---|---|---|---|---|---|---|---|---|
| 0.50 ～ 0.60 | ≤ 0.025 | ≤ 0.025 | 0.15 ～ 0.35 | 0.50 ～ 0.80 | 1.50 ～ 1.80 | 0.60 ～ 0.80 | 0.25 ～ 0.35 | 0.07 ～ 0.12 |
Chemical Analysis
Gaermany DIN | Typical Values % Min-Max | Delivery Conditions
| Grade | C(％) | S(％) | P(％) | Si(％) | Mn(％) | Ni(％) | Cr(％) | Mo(％) | V(％) | Cu(％) | Others | Heat Treatment | Hardness(HB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.2311 | 0.35 - 0.45 | ≤0.035 | ≤0.035 | 0.20 - 0.40 | 1.30 - 1.60 | - | 1.80 - 2.10 | 0.15 - 0.25 | - | - | - | Prehardened | 280/325 |
| 1.2738 | 0.35 - 0.45 | ≤0.035 | ≤0.035 | 0.20 - 0.40 | 1.30 - 1.60 | 0.90 - 1.20 | 1.80 - 2.10 | 0.15 - 0.25 | - | - | - | Prehardened | 280/320 or 360/325 |
| 1.2711 | 0.50 - 0.60 | ≤0.025 | ≤0.025 | 0.15 - 0.35 | 0.50 - 0.80 | 1.50 - 1.80 | 0.60 - 0.80 | 0.25 - 0.35 | 0.07 - 0.12 | - |
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