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AK Steel 18 SR® Ferritic Stainless steel

Category	Metal , Ferrous Metal , Stainless Steel
Manufacturer	AK Steel
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	AK Steel 18 SR® Ferritic Stainless steel.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

AK Steel 18 SR® provides excellent resistance to high temperature scaling - far superior to that of Type 446 stainless steel. This material is readily welded by conventional methods. It is not subject to troublesome embrittlement or loss of corrosion resistance in the heat affected zones that affects many other straight chromium alloys. Typical uses include industrial ovens, blowers, exhaust systems, furnace equipment, heaters, induction furnaces and furnace tubes, annealing boxes, baffle plates, heat exchangers, resistor grids, kiln liners and pyrometer tubes.Information provided by AK Steel

Physical Properties	Metric	English	Comments
Density	7.45 g/cc	0.269 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	84	84
Tensile Strength, Ultimate	538 MPa	78000 psi
	34.0 MPa @Temperature 871 °C	4930 psi @Temperature 1600 °F
	110 MPa @Temperature 704 °C	16000 psi @Temperature 1300 °F
	338 MPa @Temperature 538 °C	49000 psi @Temperature 1000 °F
Tensile Strength, Yield	386 MPa @Strain 0.200 %	56000 psi @Strain 0.200 %
	21.0 MPa @Strain 0.200 %, Temperature 1600 °C	3050 psi @Strain 0.200 %, Temperature 2910 °F
	97.0 MPa @Strain 0.200 %, Temperature 1300 °C	14100 psi @Strain 0.200 %, Temperature 2370 °F
	234 MPa @Strain 0.200 %, Temperature 1000 °C	33900 psi @Strain 0.200 %, Temperature 1830 °F
Elongation at Break	30 %	30 %	in 2 inches

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	943 °C	1730 °F	Normal Operation
	1050 °C	1930 °F	Peak

Component Elements Properties	Metric	English	Comments
Aluminum, Al	1.7 %	1.7 %
Carbon, C	0.015 %	0.015 %
Chromium, Cr	17.3 %	17.3 %
Iron, Fe	80.185 %	80.185 %	As Remainder
Manganese, Mn	0.30 %	0.30 %
Nickel, Ni	0.25 %	0.25 %
Titanium, Ti	0.25 %	0.25 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000950 - 0.000105 ohm-cm	0.0000950 - 0.000105 ohm-cm

Descriptive Properties	Value	Comments
Corrosion Resistance	69 mm/year	Synthetic Muffler Condensate (Dilute H2SO4 - HBr Vapors, 240 hours)
Deep-Drawing Capability rm	1.4
Strain Hardening Exponent n	0.18

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