| Letter or abbreviation |
Grade Profile |
| 8CrMn |
Mirror plastic mold steel, pre-hardened steel cutting. The steel heat treatment process is simple, air-cooled quenching, the hardness after quenching and tempering treatment 33 ~~ 35HRC , tensile strength up to 3000MPa . For large-scale plastic injection mold, you can reduce mold volume |
| B25 |
Pre-hardened plastic mold steel, the organization of the pearlite + ferrite, the patented product, developed by the Shanghai Baosteel Group B is Baosteel's corporate code |
| B30 |
Pre-hardened plastic mold steel, the organization of bainite, the patented product developed by the Shanghai Baosteel. The pre-hardened hardness of 28 to 35HRC . Nitriding treatment can also be further strengthened, its performance is superior to the same type of Sweden 718 steel ( within the ASSAB ) |
| LJ |
Ultra-low carbon plastic mold steel, Huazhong University of units developed. The steel cold extrusion and then by carburizing, quenching, tempering, and the mold surface with high hardness and high wear resistance, while the core part of strength and toughness, the plastic used to manufacture high-precision, high-mirror cavity complex mold. and the LJ steel of the same type, such as the United States ( AISI ) P2 , Sweden 8416steel |
| PCR |
Corrosion-resistant plastic mold steel, Materials Research Institute and other units developed. The steel for the age-hardening stainless steel, suitable for the production of PVC and mixed with a flame retardant thermoplastic injection mold |
| PMS |
Mirror plastic mold steel, materials developed by the Institute. The PMS steel is a precipitation hardening hardening steels, with a fine mirror finish, performance, good hot and cold processing performance, power processing performance and mechanical properties. After solution treatment and aging treatment, the matrix of bainite + martensite dual phase microstructure, heat deformation small. The steel also has a good nitriding surface hardening performance. Require high mirror, precision plastic mold for the production of |
| P20 + Ni |
Mirror plastic mold steel. The grade is not a code, developed in China but popular on the domestic market commonly known as, Italy, United States P20 steel add Ni improved grades, is now enshrined in the Chinese standard ( GB / T 1299 - 2000 ) and YB / T 094 - 1997 ), the steel the for 3Cr2NiMoSM3Cr2NiMo . The steel has high hardenability, good polishing performance, EDM performance and the striae processing performance. Suitable for production of a large mirror plastic mold. Domestic market 3Cr2NiMnMo steel ( of Cr and Mo content) or to Sweden, Grade 718 ( ASSAB ), The improved ; Germany, Japan, Austria and other countries also have similar steel |
| SM1 |
The development of pre-hardening cutting plastic mold steel, Iron and Steel Institute and other units. Factory hardness 38 ~~ 42HRC . The steel has a low roughness, high hardenability, for a large mirror and mold plastic mold, precision plastic rubber mold |
| SM2 |
The development of pre-hardening cutting plastic mold steel, Iron and Steel Institute and other units. Factory hardness 38 ~~ 42HRC . The steel equivalent to P21 improved, there are some anti-corrosion ability, for the mirror, and precision plastic mold |
| WCG |
Units developed by non-magnetic die steel, Shanghai Iron and Steel Institute. The steel non-magnetic, high strength, good wear resistance, and magnetic components of the powder die casting mold, and other non-magnetic mold |
