Outokumpu 254 SMO® High Performance Austenitic Stainless Steel

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Outokumpu 254 SMO® High Performance Austenitic Stainless Steel
Categories:	Metal; Ferrous Metal; Austenitic; Pressure Vessel Steel; Stainless Steel
Material Notes:	Applications: Process equipment in chemical industry Bleaching equipment in the pulp and paper industry Flue-gas cleaning Desalination Seawater handling Heat exchangers Available in hot rolled plate (Quarto), hot rolled strip/sheet (CPP), cold rolled strip/sheet, cold rolled narrow strip, bar, and rod forms.
Key Words:	EN 1.4547; UNS S31254
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Physical Properties	Original Value	Comments

Density	8.00 g/cc	RT

Mechanical Properties	Original Value	Comments
Hardness, Brinell	>= 210	Hot rolled plate/Hot rolled strip/Cold rolled strip; EN 10003-1
Tensile Strength, Ultimate	680 MPa	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
	510 MPa @Temperature 400 °C	EN min.; EN 10002-5
	525 MPa @Temperature 300 °C	EN min.; EN 10002-5
	560 MPa @Temperature 200 °C	EN min.; EN 10002-5
	615 MPa @Temperature 100 °C	EN min.; EN 10002-5
Tensile Strength, Yield	300 MPa @Strain 0.2 %	EN min., RT; EN 10002-1
	340 MPa @Strain 0.2 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
	380 MPa @Strain 1 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
	160 MPa @Strain 0.2 %, Temperature 400 °C	EN min.; EN 10002-5
	170 MPa @Strain 0.2 %, Temperature 300 °C	EN min.; EN 10002-5
	190 MPa @Strain 0.2 %, Temperature 200 °C	EN min.; EN 10002-5
	190 MPa @Strain 1 %, Temperature 400 °C	EN min.; EN 10002-5
	200 MPa @Strain 1 %, Temperature 300 °C	EN min.; EN 10002-5
	225 MPa @Strain 1 %, Temperature 200 °C	EN min.; EN 10002-5
	230 MPa @Strain 0.2 %, Temperature 100 °C	EN min.; EN 10002-5
	270 MPa @Strain 1 %, Temperature 100 °C	EN min.; EN 10002-5
Elongation at Break	50 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
Modulus of Elasticity	195 GPa	RT
	166 GPa @Temperature 400 °C
Poissons Ratio	0.30	RT
Shear Modulus	75.0 GPa	calculated
Impact Test	>= 60.0 J	Hot rolled plate/Hot rolled strip/Cold rolled strip; EN 10045-1

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000850 ohm-cm	RT

Thermal Properties	Original Value	Comments
CTE, linear	16.5 µm/m-°C @Temperature 100 °C
	18.0 µm/m-°C @Temperature 400 °C
Specific Heat Capacity	0.500 J/g-°C	RT
Thermal Conductivity	14.0 W/m-K	RT
	18.0 W/m-K @Temperature 400 °C

Processing Properties	Original Value	Comments
Annealing Temperature	1120 - 1150 °C @Thickness <=2.00 mm	Solution Annealing, cooling with air/water
	1150 - 1200 °C @Thickness >=2.00 mm	Solution Annealing, quench with water

Component Elements Properties	Original Value	Comments
Carbon, C	0.010 %
Chromium, Cr	20 %
Iron, Fe	55.69 %
Molybdenum, Mo	6.1 %
Nickel, Ni	18 %
Nitrogen, N	0.20 %

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