ATI Allegheny Ludlum AL 409 Cb™ Brazeable Ferritic Stainless Steel, 43.6% Cold Work

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ATI Allegheny Ludlum AL 409 Cb™ Brazeable Ferritic Stainless Steel, 43.6% Cold Work
Categories:	Metal; Ferrous Metal; Stainless Steel; T 400 Series Stainless Steel
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.
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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 0.2 %	105000 psi @Strain 0.2 %
Elongation at Break	1.8 %	1.8 %	in 2" (50 mm)
Modulus of Elasticity	200 GPa	29000 ksi	409 HP™

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000600 ohm-cm	0.0000600 ohm-cm	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 %
Phosphorus, P	0.025 %	0.025 %
Silicon, Si	0.35 %	0.35 %
Sulfur, S	0.0050 %	0.0050 %
Titanium, Ti	0.0050 %	0.0050 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

NL4097 / 17896

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