AISI 420 | EN 1.4021

Description

Raykam 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, it can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium. Stainless steel grades that are similar to the 420 stainless steel grade include martensitic steels such as the other versions of grade, having vanadium, sulphur and molybdenum in their composition, and the grade 440 series.

Martensitic stainless steels are ones with high hardness and high carbon content. These steels are generally fabricated using methods that require hardening and tempering treatments. The operating conditions of martensitic steels are affected by loss of material’s strength at high temperatures, and decrease in ductility at negative temperatures. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this data sheet.