What material should high strength screw choose?

Shenzhen Longhua Mr. Gao to customize a number of high strength screw, strength grade requirements of 12.9, ask the Shi Shi Tong to use what will be able to achieve this high strength. He used 1018A carbon steel before, but the strength grade could not meet his needs after hardening.

1018A carbon steel belongs to medium carbon steel. The hardness of screw is basically the same as that of stainless steel 304 when it is not hardened, only 4.8 grades. The strength can be increased after heat treatment, but it can only be hardened to 6.8 grade 8.8, which can not reach 12.9 grade. In order to do 10.9 grade high strength screw or 12.9 high strength screw, SCM35 material is needed, and the strength requirement can be met after heat treatment. It belongs to alloy steel.

Shi Shi Tong specialises in making high strength screw, 8.8 screws, 10.9 screws, 12.9 screws, if you have this need, welcome to call Shi Shi Tong online purchase.? To map to sample customization, dedicated service, so that customization is more convenient and faster!

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