What are the differences between 410 and 420 stainless steel?

What are the differences between 410 and 420 stainless steel? As two popular stainless steels in the market, today, we analyze the differences between 410 and 420 stainless steel from three aspects.

Both 410 and 420 stainless steels are martensitic stainless steels with high strength and hardness, but there are some differences in performance and use.
First of all, from the chemical composition point of view, 410 stainless steel mainly contains 12% to 14% chromium and a relatively high carbon content. The chromium content of 420 stainless steel is also around 12% to 14%, but the carbon content is higher, and it also contains a small amount of molybdenum, vanadium and other elements.

In terms of physical properties, due to the difference in carbon content, 420 stainless steel has a higher hardness and greater strength than 410 stainless steel. This makes 420 stainless steel more suitable for the manufacture of tools that require high hardness and high strength, such as scalpels, scissors, etc. 410 stainless steel has relatively good toughness and can be used to manufacture some mechanical parts that withstand impact loads.

In terms of corrosion resistance, both have certain corrosion resistance, but it is relatively weaker than austenitic stainless steel. 410 stainless steel performs well in dry environments, but it is easy to rust in humid or corrosive environments. 420 stainless steel has slightly better corrosion resistance than 410 stainless steel due to the presence of a small amount of molybdenum and other elements.

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Material Grade we have

1)200series:201,202,1.4371,1.4373,SUS201,SUS202,etc

2)300series:301,303,304,304L,304LN,304N,309,309S,310,310S,316L,31 6Ti,317L,321,321H,347H,1.4319,1.4305,1.4301,1.4306,1.4833,1.4845, 1. 4404,1.4571,1.4438,1.4541,SUS304,SUS304L,SUS309S,SUS310S,SUS316,SUS316Ti,SUS316L,etc 3)400series:409,409L,410S,420,430,440C,444,1.4016,1.4006,1.4002,1.4125,1.4501,1.4362,1.4460,1.4521,1.4545, 1.4547, ,etc