DONGGUAN MISUNG MOULD STEEL CO.,LTD
DongGuan Mi Sung Mould Steel Co.,ltd
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Forged P20+NI /718H/1.2738 steel block Plastic Mould Steel Material
718H Mould Steel Bar
718H is a vacuum-melting chromium-nickel-molybdenum alloy steel that has been hardened and tempered before it leaves the factory. It offers the following advantages: No risk of quench cracking and heat treatment; no need for heat treatment; shorten the cycle time; Cost (for example, without overseas Chinese is deformation); easy to amend the mold; nitriding and surface hardening can be applied to improve the mold surface hardness and wear resistance.
718H steel is pre-hard mirror anti-acid plastic mould steel. The steel pre-hardened, uniform material, high cleanliness, excellent polishing performance and lithography. Also has high hardenability, good electrical processing performance and striae processing performance. Pre-hardened steel without quenching can also be used for the mold bore, flange flame hardening can be implemented, the hardness can be increased to 52HRC.
China GB standard steel No. 3Cr2NiMo;
German DIN standard material steel No. 2738;
Sweden Assab ASSAB standard steel No. 718;
US AISI / SAE standard steel P20 optimization;
Japan JS standard steel SNCM optimization;
International Organization for Standardization ISO standard steel 35CrMo2.
718H plastic mould steels chemical composition (only for reference) (%) :
| Element | C | Si | Mn | P | S | Cr | Mo | Ni |
| Min | 0.35 | 0.2 | 1.3 | 1.8 | 0.15 | 0.9 | ||
| Max | 0.46 | 0.4 | 1.6 | 0.035 | 0.005 | 2.2 | 0.25 | 1.2 |
