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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
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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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