As one of the representative steel types of plastic mold steel, 1.2312 steel is developed on the basis of 1.2311 steel. 1.2312 steel uses Cr-Mn-Mo as a strengthening alloy element, and adds a higher content of sulfur element (0.05-0.1% ),which offers better machineability,30% increase in milling speed and 300% increase in drilling speed can be expected.1. 2312 steel has excellent cutting performance, good toughness and wear resistance, stable size and uniform hardness after processing.DIN 1.2312 is generally supplied in pre-hardened condition,with a hardness of 280-320HB.
1.2312 Steel Application
DIN1.2312 tool steel is used for the production of moulds where improved machinability is required,and for plastics processing and moulds for pressure die casting.Typical applications include die holders, zinc die casting dies, backers, bolsters and injection moulds,machine construction, jigs, base plates, assembling parts, moulding frames, plastic moulds, plastic processing, die casting moulds, hydroforming tools, recipient sleeves, folding bars, tool holders,etc.
1.2312 Steel Chemical Composition
| Grade | C | Mn | P | S | Si | Cr | Mo |
| 1.2312 | 0.35-0.45 | 1.4-1.6 | ≤ 0.03 | 0.05-0.1 | 0.3-0.5 | 1.8-2.0 | 0.15-0.25 |
DIN 1.2312 Steel Mechanical Property at Quenched and Tempered condition
| Tensile Strength | Yield Strength | Elongation | Reduction of Area | Impact | Hardness |
| 960Mpa | 850Mpa | 10% | 45% | 20J | 300HB |
Partial part type display:
