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ATI Allegheny Ludlum Type AL 441HP™ Stainless Steel Alloy

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
Download PDF ATI Allegheny Ludlum Type AL 441HP™ Stainless Steel Alloy.pdf
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Material Notes:
Allegheny Ludlum stainless Type AL 441HP™ alloy is a heat resisting ferritic grade 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.AL 441HP™ alloy has been developed for the severe tube bending and forming operations typical in automotive exhaust manifold fabrication. Tight control on carbon and nitrogen levels plus improved mill processing result in enhanced formability is terms of higher tube bending speeds and lower breakage or scrap rate.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 82
82
typical
Tensile Strength, Ultimate 496 MPa
71900 psi
Typical
Tensile Strength, Yield 310 MPa
45000 psi
Typical
Elongation at Break 31 %
31 %
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
Type 441
10.3 µm/m-°C

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

@Temperature 68.0 - 572 °F
Type 441
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
Type 441
Maximum Service Temperature, Air 1010 °C
1850 °F
Continuous service
Component Elements Properties Metric English Comments
Aluminum, Al 0.050 %
0.050 %
Carbon, C 0.0090 %
0.0090 %
Chromium, Cr 18 %
18 %
Iron, Fe 79 %
79 %
as balance
Manganese, Mn 0.35 %
0.35 %
Nickel, Ni 0.30 %
0.30 %
Niobium, Nb (Columbium, Cb) 0.71 %
0.71 %
Nitrogen, N 0.014 %
0.014 %
Phosphorous, P 0.023 %
0.023 %
Silicon, Si 0.34 %
0.34 %
Sulfur, S 0.0020 %
0.0020 %
Titanium, Ti 0.29 %
0.29 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000587 ohm-cm
0.0000587 ohm-cm
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