Supreme Steels

XM-19 (Nitronic 50)

XM-19 (Nitronic 50) - High-Strength Austenitic Stainless Steel

XM-19, also known by its commercial name Nitronic 50, is an austenitic stainless steel alloy primarily known for its high strength, excellent corrosion resistance, and ability to resist wear and galling. It is a nitrogen-strengthened steel that provides a combination of strength and toughness, making it ideal for a wide range of applications, including marine, chemical, and food processing environments. XM-19’s higher strength compared to conventional austenitic stainless steels and its excellent resistance to oxidation and corrosion make it suitable for critical applications in industries where high performance is required.

Features of XM-19 (Nitronic 50):

Specifications:

These specifications confirm the alloy’s applicability for various applications requiring high strength and corrosion resistance, including in the marine, chemical, and aerospace industries.

Composition of XM-19 (Nitronic 50):

Element Percentage
Nickel (Ni) 13.0-17.0%
Chromium (Cr) 19.0-22.0%
Manganese (Mn) 7.0-10.0%
Nitrogen (N) 0.1-0.2%
Iron (Fe) Balance (remaining)
Silicon (Si) 1.0% Max
Carbon (C) 0.03% Max
Phosphorus (P) 0.045% Max
Sulfur (S) 0.03% Max
Copper (Cu) 0.50% Max

Physical Properties:

Property Value
Density 7.9 g/cm³
Melting Point 1375-1425°C (2507-2600°F)
Hardness (BHN) 220-260 BHN
Tensile Strength 860 MPa (125,000 psi)
Yield Strength 480 MPa (70,000 psi)
Elongation 40%
Modulus of Elasticity 190 GPa
Thermal Conductivity 16.2 W/m·K
Coefficient of Thermal Expansion 16.5 x 10^-6 /°C