ASTM A479 Grade XM-18 Annealed

Equivalent material: AISI XM-18, AISI 216L, AISI S21603, SAE XM-18, SAE 216L, SAE S21603, UNS S21603

ASTM A479 Grade XM-18 Annealed general

Property Temperature Value Comment
Density 23.0 °C Density of 7.9 - 8.2 g/cm³ Typical for Austenitic Stainless Steel

ASTM A479 Grade XM-18 Annealed thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.7E-5 - 1.9E-5 1/K Typical for Austenitic Stainless Steel
Melting point - Melting point of 1230 - 1480 °C Typical for Austenitic Stainless Steel
Specific heat capacity 23.0 °C Specific heat capacity of 440 J/(kg·K) Typical for Austenitic Stainless Steel
Thermal conductivity 23.0 °C Thermal conductivity of 11 - 21 W/(m·K) Typical for Austenitic Stainless Steel

ASTM A479 Grade XM-18 Annealed chemical

Property Value
Carbon Carbon of 0.03 %
Chromium Chromium of 17.5 - 20.5 %
Manganese Manganese of 7.5 - 9 %
Molybdenum Molybdenum of 2 - 3 %
Nickel Nickel of 5 - 7 %
Nitrogen Nitrogen of 0.25 - 0.5 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.03 %

ASTM A479 Grade XM-18 Annealed electrical

Property Temperature Value Comment
Electrical resistivity 23.0 °C Electrical resistivity of 8.5E-7 Ω·m Typical for Austenitic Stainless Steel

ASTM A479 Grade XM-18 Annealed mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 195 GPa Typical for Austenitic Stainless Steel
Elongation A50 23.0 °C Elongation A50 of 40 % -
Hardness, Brinell 23.0 °C Hardness, Brinell of 212 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Austenitic Stainless Steel
Reduction of area 23.0 °C Reduction of area of 50 % -
Shear modulus 23.0 °C Shear modulus of 77 GPa Typical for Austenitic Stainless Steel
Tensile strength 23.0 °C Tensile strength of 620 MPa -
Yield strength Rp0.2 23.0 °C Yield strength Rp0.2 of 345 MPa -

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