Outokumpu 4742 High Temperature Ferritic Stainless Steel

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Outokumpu 4742 High Temperature Ferritic Stainless Steel
Categories:	Metal; Ferrous Metal; Ferritic; Stainless Steel
Material Notes:	Good scaling resistance and can be subjected to reducing sulphur environments without risk. Subject to 475°C embrittlement and grain coarsening at temperatures above 950°C. s-phase may form after long time exposures to temperatures around 650°C. Applications: Mostly used in high temperature applications with sulphurous atmospheres and/or low tensile loads such as for installations within: Chemical industry (drums) Power industry (coal burners) Metalworking industry (heat treatment boxes) Furnace technology (walls, doors) Available in hot rolled plate (Quarto) form.
Key Words:	EN 1.4742
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Physical Properties	Metric	English	Comments

Density	7.60 g/cc	0.275 lb/in³	RT

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	212	212	RT; EN 10003-1
Tensile Strength, Ultimate	535 MPa	77600 psi	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
Tensile Strength, Yield	375 MPa @Strain 0.2 %	54400 psi @Strain 0.2 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
	405 MPa @Strain 1 %	58700 psi @Strain 1 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1
Elongation at Break	25 %	25 %	Outokumpu Typical, Hot Rolled Plate (Quarto); EN 10002-1

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000910 ohm-cm	0.0000910 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	12.1 µm/m-°C @Temperature 600 °C	6.72 µin/in-°F @Temperature 1110 °F
	12.9 µm/m-°C @Temperature 800 °C	7.17 µin/in-°F @Temperature 1470 °F
Specific Heat Capacity	0.450 J/g-°C	0.108 BTU/lb-°F	RT
Thermal Conductivity	16.0 W/m-K	111 BTU-in/hr-ft²-°F	RT
	22.3 W/m-K @Temperature 500 °C	155 BTU-in/hr-ft²-°F @Temperature 932 °F
Maximum Service Temperature, Air	1000 °C	1830 °F	Dry Air

Processing Properties	Metric	English	Comments
Annealing Temperature	800 - 850 °C	1470 - 1560 °F	Cooling: forced air or water

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.70 %	0.70 %
Carbon, C	0.12 %	0.12 %
Chromium, Cr	18 %	18 %
Iron, Fe	81.18 %	81.18 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NOUTOK38 / 18753

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