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ATI Allegheny Ludlum Type 441 Alloy Stainless Steel

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer ATI Allegheny Ludlum
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:
Allegheny Ludlum stainless Type 441 alloy is a heat resisting ferritic grades providing good oxidation and corrosion resistance for applications like automotive exhaust system components. Dual stabilized with columbium and titanium to provide good weld ductility and resistance to intergranular corrosion in the weld heat affected zone.Type 441 alloy has very good resistance to progressive scaling in both continuous and cyclic oxidizing laboratory test environments. Type 441 is weldable using traditional tungsten inert gas and metal arc inert gas procedures commonly used with stainless steel. When a filler wire is required, a matching Type 441 chemistry electrode can be used with the alloy to maintain compatible corrosion and oxidation resistance in the weld area. It is suggested that hydrogen not be mixed with inert gas (unless post weld annealing is planned) because ferritic stainless steels are subject to hydrogen embrittlement.Information provided by Allegheny Ludlum Corporation.
Physical Properties Metric English Comments
Density 7.711 g/cc
0.2786 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell B 84
84
typical
Tensile Strength, Ultimate 510 MPa
74000 psi
Typical
Tensile Strength, Yield 331 MPa
48000 psi
Typical
Elongation at Break 29 %
29 %
typical in 2" (50 mm)
Thermal Properties Metric English Comments
CTE, linear 9.20 µm/m-°C

@Temperature 20.0 - 100 °C
5.11 µin/in-°F

@Temperature 68.0 - 212 °F
10.3 µm/m-°C

@Temperature 20.0 - 300 °C
5.72 µin/in-°F

@Temperature 68.0 - 572 °F
10.6 µm/m-°C

@Temperature 20.0 - 500 °C
5.89 µin/in-°F

@Temperature 68.0 - 932 °F
10.8 µm/m-°C

@Temperature 20.0 - 700 °C
6.00 µin/in-°F

@Temperature 68.0 - 1290 °F
11.3 µm/m-°C

@Temperature 20.0 - 800 °C
6.28 µin/in-°F

@Temperature 68.0 - 1470 °F
11.9 µm/m-°C

@Temperature 20.0 - 900 °C
6.61 µin/in-°F

@Temperature 68.0 - 1650 °F
Maximum Service Temperature, Air 1010 °C
1850 °F
Continuous service
Component Elements Properties Metric English Comments
Aluminum, Al 0.050 %
0.050 %
Carbon, C 0.020 %
0.020 %
Chromium, Cr 18 %
18 %
Iron, Fe 79 %
79 %
as balance
Manganese, Mn 0.33 %
0.33 %
Nickel, Ni 0.32 %
0.32 %
Niobium, Nb (Columbium, Cb) 0.69 %
0.69 %
Nitrogen, N 0.021 %
0.021 %
Phosphorous, P 0.025 %
0.025 %
Silicon, Si 0.39 %
0.39 %
Sulfur, S 0.0020 %
0.0020 %
Titanium, Ti 0.27 %
0.27 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000587 ohm-cm
0.0000587 ohm-cm
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