Ferrium® S53* alloy is a corrosion resistant, ultra-high-strength steel with mechanical properties equal to or better than conventional ultrahigh-strength steels such as 300M and SAE 4340 with the added benefit of general corrosion resistance and improved resistance to stress-corrosion cracking (SCC).
Ferrium® S53 utilizes an efficient M2C strengthening dispersion precipitated through tempering while avoiding other carbides. This maximizes strength, wear resistance, and toughness resulting in a unique combination of mechanical properties for a corrosion-resistant steel. The alloy uses a passive oxide film to provide corrosion resistance similar to 440C stainless steel. It also has high hardenability, permitting less severe quench conditions for a given section size and resulting in less distortion during heat treatment.
*Manufactured and sold under license from QuesTek Innovations LLC. Ferrium is a registered trademark of QuesTek Innovations LLC.
Carbon (Nominal) 0.21
Nickel (Nominal) 5.5
Tungsten (Nominal) 1
Chromium (Nominal) 10
Cobalt (Nominal) 14
Molybdenum (Nominal) 2
Iron (Nominal) Balance
Vanadium (Nominal) 0.3
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