China 1.2312 Steel Plate for Precision Plastic die Alloy Parts

1.2312/P20+S Alloy Steel Plate for Precision Plastic Mould
1.2312/P20+S steel is ideally suited for the production of moulds where improved machinability is required. Typical applications include die holders, zinc die casting dies, backers, bolsters and injection moulds. The versatility of this plastic mould tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts and wear strips.
1. The main performance
It has excellent hardening depth and good machinability, Delivery to pre hardened and tempered condition, Sulfur content is higher than 1.2311. Can impose nitriding processing (about 800HV), plating Nickel or chrome.
2. Application:
Mainly used for the degree of thefamily which do not require extreme large plastic moulds, Used as a low melting point of die holder , mould base, etc.
3. Grade

W.NrDINAFNORAISI/SAEGB1.2312X40CrMnMoS8-6(40CMD8S)P20+S4Cr2MnMo

4. Chemical composition (%)

CMnSiCrMoSP0.35-0.451.40-1.600.30-0.501.80-2.100.15-0.250.05-0.10≤0.030

5. Phase transition temperature

Ac1740°CMs310°C

6. The hardness of delivery

Prehardened and temperedHB278-325(950-1100N/mm²)

7. Heat treatment

Annealing1)Heated to720-750°C,Two to four hours heat preservation,
2)Furnace coolingStress relief1)Heated to560-650°C and then two to four hours heat preservation
2)Furnace cooling or air coolingPre hardened1)Preheat to 600-650°C
2)Heated to hardening temperature 840-840°C and heat preservation
3)Oil cooling
4)Hardness:HRC51Drawing temper1)Immediately after quenching
2)When the 580-650°C,with the 1/inch to heat preservation

8. Delivery: For abundant stock, 15-20 days.For customized products, 30-50 days.
9. Packing: We provide standard export packing or according to customers' request.

Warehous

Processing

Strict Quality Control