1.2311 plastic mold steel. It is widely used in China,The Ex-mill hardness HRC 30 ~ 42, which is suitable for large and medium1.2311 plastic mold steel has good machinability and can be generally polished.
1.2311 plastic mold steel
The Chemical composition of 1.2311 Plastic mold steel
1.2311 & Equivalents |
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| Grade | C | Si | Mn | Cr | Mo | P | S |
| DIN 1.2311 | 0.35～0.45 | 0.20～0.40 | 1.30～1.60 | 1.80～2.10 | 0.15～0.25 | ≤0.035 | ≤0.035 |
| P20 | 0.28-0.40 | 0.20-0.80 | 0.60-1.0 | 1.40-2.00 | 0.30-0.55 | ≤0.03 | ≤0.03 |
| GB 3Cr2Mo | 0.28～0.40 | 0.20～0.80 | 0.60～1.00 | 1.40～2.00 | 0.30～0.55 | ≤0.030 | ≤0.030 |
1.2311 plastic mold steel can be used for mold processing directly after pre-harden processing , it is within good dimensional stability . The 1.2311 plastic mold steel with general usage , and the life-cycle of molds can reach 50W times .
1.2311 Plastic Mold Steel Production process ：
EAF+LF+VD+ HOT ROLLED(CC） + PRE-HARDEN +Black Surface
1.2311 Plastic mold steel suitable for plastic molds and mold holders of TV front cases, telephones, water dispensers, vacuum cleaners, etc.
● Thermoplastic injection mold, extrusion mold.
● Thermoplastic blow mold.
● The main parts of the heavy-duty mold.
● Cold structure parts.
● Commonly used in the manufacture of TV cases, washing machines, refrigerator inner cases, buckets, etc.
1.2311 Plastic Mold Steel Properties:
Quenched and tempered plastic mould steel.
Hardness in condition as supplied 280-325HB(28-34HRC) . Good machinability, better polishability compared with 1.2312. Capable for texturing.
Characteristics:
1.2311 Plastic mold steel is supplied in the heat treated condition to a tensile strength of 950-1100MPa and by further heat treatment a hardness level of approximately 50 HRC can be achieved.
Improved wear resistance can be achieved by flame/ induction hardening to give a surface hardness of up to 54 HRC or by nitriding, to give a surface hardness of approximately 60 HRC whilst maintaining the high, as supplied core strength of 950-1100MPa. 1.2311 Plstic mold steel offers excellent polishability and good surface finish when subjected to electrical discharge machining (EDM) or texturing.
Applications:
Plastic mould, zinc die-casting tooling. High tensile application – heavy duty shafts, gears, axles, crusher rolls, bolts, etc. Plastic moulds, mould frames for plastic moulds and pressure casting dies, sleeves of recipients
1.2311 Plastic Mold Steel Properties:
Quenched and tempered plastic mould steel.
Hardness in condition as supplied 280-325HB(28-34HRC) . Good machinability, better polishability compared with 1.2312. Capable for texturing.
Characteristics:
1.2311 Plastic mold steel is supplied in the heat treated condition to a tensile strength of 950-1100MPa and by further heat treatment a hardness level of approximately 50 HRC can be achieved.
Improved wear resistance can be achieved by flame/ induction hardening to give a surface hardness of up to 54 HRC or by nitriding, to give a surface hardness of approximately 60 HRC whilst maintaining the high, as supplied core strength of 950-1100MPa. 1.2311 Plstic mold steel offers excellent polishability and good surface finish when subjected to electrical discharge machining (EDM) or texturing.
1.2311 Plastic mold steel Applications:
Plastic mould, zinc die-casting tooling. High tensile application – heavy duty shafts, gears, axles, crusher rolls, bolts, etc. Plastic moulds, mould frames for plastic moulds and pressure casting dies, sleeves of recipients
