High Nitrogen Steel

High nitrogen nickel-free stainless steel

• Density： ≥7.6 g·cm³

• Hardness： 280-350 HV1

• Yield Strength： ≥600 MPa

• Tensile Strength： ≥900 MPa

• Elongation： ≥25%

Nitrogen was used instead of nickel to stabilize austenitic high-nitrogen steel

●    Traditional austenitic stainless steel

●    Nickel austenite stability elements (low strength, poor biocompatibility)

●    Solution: using nitrogen instead of nickel austenite stable organization

●    Processing difficulties :

• Material is difficult to control the nitrogen content in (temperature, nitrogen partial pressure, nitriding dynamics)

• The presence of nitrogen in the material form affect material properties

●    316L Advantage

• Corrosion resistance 

• Good ductility

• Polishing, high quality surface

●    316L Disadvantage:

• Low strength, low hardness

• Contains large amount of nickel, leading to allergic reactions of human body