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Which raw material will be used for screw and bolt?

Tony Guan Original 2015-07-07 10:44:07
Bolt & Screw Brief:

Bolt and Screw is one kind of standard part, so it play a important role in sheet metal fabrication parts  now.

Bolt & Screw material brief:

In order to make the screw and bolt have a good characteristic, which material will be used for it?

1. carbon steel

Low carbon steel C%≤0.25%, in china, mainly A3, in USA,  mainly 1008,1015,1018,1022.  mainly for grade4-4.8 bolt and screw.

 middle carbon steel 0.25%1035,CH38F,1039,40ACR

 high carbon steel: C%>0.45%

2. Stainless steel : SUS302、SUS304、SUS316。

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