SS Scrap 400 series
The 400-series group of stainless steels contain 11-27% chromium, up to about 1% carbon, and 2.5% nickel maximum. The grades of stainless steel castings often produces respond to heat treatment and can be supplied with a predominantly martensitic microstructure in a wide range of strength and hardness.
The high carbon types combine fairly high wear resistance with high corrosion resistance. While the martensitic grades can contain up to about 15% ferrite, wholly ferritic grades can be produced as well. These grades are not hardenable but possess better weldability and hot gas corrosion resistance than the martensitic grades. Generally, 400 series alloys are not as corrosion resistant as the 300 series but they are stronger and in specific environments provide a more cost effective solution.
This stainless steel series tends to be susceptible to rust and corrosion under some conditions although heat-treating will harden them. The 400 series of stainless steels have a higher carbon content, giving it a martensitic crystalline structure that provides the end product with high-strength and high-wear resistance. The 400 series steels tend to be used in agricultural equipment, gas turbine exhaust silencers, hardware, motor shafts, and more.
