ATI Allegheny Ludlum AL 409 Cb™ Brazeable Ferritic Stainless Steel, 43.6% 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, 43.6% 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	97.5	97.5
Tensile Strength, Ultimate	737 MPa	107000 psi
Tensile Strength, Yield	721 MPa @Strain 0.200 %	105000 psi @Strain 0.200 %
Elongation at Break	1.8 %	1.8 %	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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