Fastening element

Details Fastening element Fastening element

C - Chemistry, Metallurgy

23

C

C23C 30/00 (2006.01) C22C 38/00 (2006.01) C22C 38/18 (2006.01) C23F 11/00 (2006.01) F16B 15/00 (2006.01) F16B 33/06 (2006.01)

Patent

CA 2638698

A fastening element has a core zone (14) formed of a relatively hard carbon steel, a skin zone (17) located outwardly of the core zone (14) and formed of a first low-carbon austenitic steel alloyed with a first alloy metal, and an intermediate zone (15a, 15b) provided between the core zone (14) and the skin zone (17) and formed of a second low-carbon steel having a smaller hardness than the steel the core zone (14) is formed of.

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