Sandvik 254 SMO

Sandvik 254 SMO

Sandvik 254 SMO introduction

Sandvik 254 SMO is a high-alloy austenitic stainless steel developed for use in seawater and other aggressive chloride-bearing media. The steel is characterized by the following properties:

Excellent resistance to pitting and crevice corrosion, PRE = ≥42.5 (The PRE is defined as, in weight-%, PRE = %Cr + 3.3 x %Mo + 16 x %N)
High resistance to general corrosion
High resistance to stress corrosion cracking
Higher strength than conventional austenitic stainless steels
Good weldability

More technical information and charts that are relevant to the materials corrosion, mechanical and physical performance are displayed in the figures on the right side of the material page.

Datasheet URL:
Sandvik 254 SMO

Datasheet updated 2019-11-06 09:12 (supersedes all previous editions)

Equivalent material: UNS S31254, EN 1.4547, DIN 1.4529, EN X1CrNiMoCuN20-18-7, SS 2378, AFNOR Z1CNDU20-18-06AZ

Sandvik 254 SMO general

Property Temperature Value Comment
Density 23.0 °C Density of 8 g/cm³ -
Recycled Content - Recycled Content of 82.1 % Average recycled content

Sandvik 254 SMO thermal

Property Temperature Value Comment
Coefficient of thermal expansion 100.0 °C Coefficient of thermal expansion of 1.6E-5 1/K for 30°C to the mentioned temperature
- 200.0 °C Coefficient of thermal expansion of 1.6E-5 1/K for 30°C to the mentioned temperature
- 300.0 °C Coefficient of thermal expansion of 1.65E-5 1/K for 30°C to the mentioned temperature
- 400.0 °C Coefficient of thermal expansion of 1.65E-5 1/K for 30°C to the mentioned temperature
- 500.0 °C Coefficient of thermal expansion of 1.7E-5 1/K for 30°C to the mentioned temperature
- 600.0 °C Coefficient of thermal expansion of 1.7E-5 1/K for 30°C to the mentioned temperature
- 700.0 °C Coefficient of thermal expansion of 1.75E-5 1/K for 30°C to the mentioned temperature
Specific heat capacity 20.0 °C Specific heat capacity of 485 J/(kg·K) -
- 100.0 °C Specific heat capacity of 510 J/(kg·K) -
- 200.0 °C Specific heat capacity of 535 J/(kg·K) -
- 300.0 °C Specific heat capacity of 565 J/(kg·K) -
- 400.0 °C Specific heat capacity of 585 J/(kg·K) -
- 500.0 °C Specific heat capacity of 600 J/(kg·K) -
- 600.0 °C Specific heat capacity of 615 J/(kg·K) -
- 700.0 °C Specific heat capacity of 625 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 10 W/(m·K) -
- 100.0 °C Thermal conductivity of 12 W/(m·K) -
- 200.0 °C Thermal conductivity of 14 W/(m·K) -
- 300.0 °C Thermal conductivity of 16 W/(m·K) -
- 400.0 °C Thermal conductivity of 18 W/(m·K) -
- 500.0 °C Thermal conductivity of 20 W/(m·K) -
- 600.0 °C Thermal conductivity of 21 W/(m·K) -
- 700.0 °C Thermal conductivity of 23 W/(m·K) -

Sandvik 254 SMO chemical

Property Value Comment
Carbon Carbon of 0.02 % max.
Chromium Chromium of 20 % -
Copper Copper of 0.7 % -
Iron -
Manganese Manganese of 1 % max.
Molybdenum Molybdenum of 6.1 % -
Nickel Nickel of 18 % -
Nitrogen Nitrogen of 0.2 % -
Phosphorus Phosphorus of 0.03 % max.
Silicon Silicon of 0.8 % max.
Sulfur Sulfur of 0.01 % max.

Sandvik 254 SMO magnetic

Property - -
Application areas
Certifications
Cold Forming
Corrosion properties Grade Time to failure Remark
ASTM TP316 <150 h Pitting
'904L' No failure (1000 h) Crevice corrosion
Sandvik 254 SMO No failure (1000 h) No attack

Sandvik 254 SMO mechanical

Property Temperature Value Comment
Charpy impact energy -196.0 °C Charpy impact energy of 60 J EN 13445-2 (UFPV-2) and EN 10216-5
Elastic modulus 20.0 °C Elastic modulus of 195 GPa -
- 100.0 °C Elastic modulus of 190 GPa -
- 200.0 °C Elastic modulus of 182 GPa -
- 300.0 °C Elastic modulus of 174 GPa -
- 400.0 °C Elastic modulus of 166 GPa -
- 500.0 °C Elastic modulus of 158 GPa -
Elongation 23.0 °C Elongation of 35 % min.
Elongation A2 23.0 °C Elongation A2 of 35 % min.
Hardness, Rockwell B 23.0 °C Hardness, Rockwell B of 96 [-] max.
Tensile strength 23.0 °C Tensile strength of 675 - 850 MPa -
Yield strength Rp0.1 20.0 °C Yield strength Rp0.1 of 340 MPa min.
- 100.0 °C Yield strength Rp0.1 of 270 MPa min.
- 200.0 °C Yield strength Rp0.1 of 225 MPa min.
- 300.0 °C Yield strength Rp0.1 of 200 - 205 MPa min.
- 350.0 °C Yield strength Rp0.1 of 195 MPa min.
- 400.0 °C Yield strength Rp0.1 of 185 - 190 MPa min.
- 450.0 °C Yield strength Rp0.1 of 175 MPa min.
- 500.0 °C Yield strength Rp0.1 of 170 - 180 MPa min.
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 310 MPa min.
- 100.0 °C Yield strength Rp0.2 of 230 MPa min.
- 200.0 °C Yield strength Rp0.2 of 190 MPa min.
- 300.0 °C Yield strength Rp0.2 of 170 - 175 MPa min.
- 350.0 °C Yield strength Rp0.2 of 165 MPa min.
- 400.0 °C Yield strength Rp0.2 of 155 - 160 MPa min.
- 450.0 °C Yield strength Rp0.2 of 145 MPa min.
- 500.0 °C Yield strength Rp0.2 of 140 - 148 MPa min.

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