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ATI Allegheny Ludlum AL 409 Cb™ Brazeable Ferritic Stainless Steel, 2.9% Cold Work

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer ATI Allegheny Ludlum
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ATI Allegheny Ludlum AL 409 Cb™ Brazeable Ferritic Stainless Steel, 2.9% Cold Work.pdf
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Material Notes:
AL 409 Cb™ is normally 12.5% chromium ferritic stainless steel with columbium stabilization and with restricted titanium and aluminum contents. As a result of these alloying adjustments, the brazeability of the alloy is markedly improved. The physical, mechanical, and corrosion properties are almost identical to those of AL 409 HP™ - property values below have been taken from AL 409 HP™ where noted.AL 409 Cb alloy is a ferritic (body cubic) steel. Carbonitrides of columbium will be dispersed throughout the structure.Information provided by Allegheny Ludlum Corporation.
Physical Properties Metric English Comments
Density 7.76 g/cc
0.280 lb/in³
409 HP™
Mechanical Properties Metric English Comments
Hardness, Rockwell B 84
84
Tensile Strength, Ultimate 467 MPa
67700 psi
Tensile Strength, Yield 422 MPa

@Strain 0.200 %
61200 psi

@Strain 0.200 %
Elongation at Break 24.8 %
24.8 %
in 2" (50 mm)
Modulus of Elasticity 200 GPa
29000 ksi
409 HP™
Thermal Properties Metric English Comments
CTE, linear 10.52 µm/m-°C

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

@Temperature 68.0 - 212 °F
409 HP™
11.11 µm/m-°C

@Temperature 20.0 - 260 °C
6.172 µin/in-°F

@Temperature 68.0 - 500 °F
409 HP™
11.88 µm/m-°C

@Temperature 20.0 - 482 °C
6.600 µin/in-°F

@Temperature 68.0 - 900 °F
409 HP™
Specific Heat Capacity 0.477 J/g-°C
0.114 BTU/lb-°F
409 HP™
Thermal Conductivity 25.0 W/m-K
174 BTU-in/hr-ft²-°F
409 HP™
Component Elements Properties Metric English Comments
Aluminum, Al 0.010 %
0.010 %
Carbon, C 0.015 %
0.015 %
Chromium, Cr 12.3 %
12.3 %
Iron, Fe 86 %
86 %
as balance
Manganese, Mn 0.35 %
0.35 %
Molybdenum, Mo 0.040 %
0.040 %
Nickel, Ni 0.25 %
0.25 %
Niobium, Nb (Columbium, Cb) 0.45 %
0.45 %
Nitrogen, N 0.015 %
0.015 %
Phosphorous, P 0.025 %
0.025 %
Silicon, Si 0.35 %
0.35 %
Sulfur, S 0.0050 %
0.0050 %
Titanium, Ti 0.0050 %
0.0050 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000600 ohm-cm
0.0000600 ohm-cm
409 HP™
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