Outokumpu 353MA® High Temperature Austenitic Stainless Steel

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Outokumpu 353MA® High Temperature Austenitic Stainless Steel
Categories:	Metal; Ferrous Metal; Austenitic; Stainless Steel
Material Notes:	Alloy with higher nickel content than the other steels. Has increased silicon and nitrogen contents and is microalloyed with rare earth metals (REM). Max service temperature in air is 1150°C, but after service below ~950°C there is a risk for reduced room temperature impact toughness. Applications: Heat and creep resistance. For use over 550°C for equipment and components within: Iron, steel, and non-ferrous industries Engineering industry Energy conservation plants Cement industry Available in hot rolled plate (Quarto) form.
Key Words:	EN 1.4854; UNS S35315
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Physical Properties	Original Value	Comments

Density	7.90 g/cc	RT

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	720 MPa	Outokumpu Typical, Hot Rolled Strip/Sheet (CPP); EN 10002-1
Tensile Strength, Yield	360 MPa @Strain 0.2 %	Outokumpu Typical,Hot rolled Strip/Sheet (CPP); EN 10002-1
	400 MPa @Strain 1 %	Outokumpu Typical,Hot rolled Strip/Sheet (CPP); EN 10002-1
Elongation at Break	50 %	Outokumpu Typical, Hot Rolled Strip/Sheet (CPP); EN 10002-1
Rupture Strength	4.50 MPa @Temperature 1100 °C, Time 3.60e+7 sec
	8.00 MPa @Temperature 1000 °C, Time 3.60e+7 sec
	15.0 MPa @Temperature 900 °C, Time 3.60e+7 sec
	20.0 MPa @Temperature 850 °C, Time 3.60e+7 sec
	28.0 MPa @Temperature 800 °C, Time 3.60e+7 sec
	39.0 MPa @Temperature 750 °C, Time 3.60e+7 sec
	56.0 MPa @Temperature 700 °C, Time 3.60e+7 sec
	82.0 MPa @Temperature 650 °C, Time 3.60e+7 sec
	127 MPa @Temperature 600 °C, Time 3.60e+7 sec
	206 MPa @Temperature 550 °C, Time 3.60e+7 sec
Modulus of Elasticity	190 GPa	RT
	130 GPa @Temperature 1000 °C
	160 GPa @Temperature 500 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000100 ohm-cm	RT

Thermal Properties	Original Value	Comments
CTE, linear	16.6 µm/m-°C @Temperature 500 °C
	18.2 µm/m-°C @Temperature 1000 °C
Specific Heat Capacity	0.450 J/g-°C	RT
	0.580 J/g-°C @Temperature 500 °C
Thermal Conductivity	11.3 W/m-K	RT
	18.5 W/m-K @Temperature 500 °C
	26.0 W/m-K @Temperature 1000 °C
Maximum Service Temperature, Air	1150 °C	Dry Air

Processing Properties	Original Value	Comments
Annealing Temperature	1010 - 1040 °C	Stress Relief Annealing (min. 0.5 h)
	1100 - 1150 °C	Solution Annealing

Component Elements Properties	Original Value	Comments
Carbon, C	0.050 %
Cerium, Ce	1.3 %
Chromium, Cr	25 %
Iron, Fe	37.18 %
Nickel, Ni	35 %
Nitrogen, N	0.17 %
Silicon, Si	1.3 %

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