AK Steel 15 Cr-Cb® ULTRA FORM® Ferritic Stainless steel

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AK Steel 15 Cr-Cb® ULTRA FORM® Ferritic Stainless steel
Categories:	Metal; Ferrous Metal; Ferritic; Stainless Steel
Material Notes:	AK Steel’s 15 Cr-Cb ULTRA FORM® is a low-carbon, low-nitrogen ferritic grade of stainless steel with an intermediate, 14.5% chromium content. Alloying additions of Ti, Cb, Si and Mn provide excellent room temperature formability and impart superior hot strength and high temperature oxidation resistance when compared to Type 409, Type 439, Type 430, 11 Cr-Cb™ and Type 436. This grade’s alloying additions, combined with AK Steel’s proprietary ULTRA FORM® processing technology, yield a fine, equiaxed grain structure that enhances room temperature formability and minimizes ridging. Information provided by AK Steel
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Mechanical Properties	Metric	English	Comments

Hardness, Rockwell B	78 - 85	78 - 85	Annealed
Tensile Strength, Ultimate	469 - 538 MPa	68000 - 78000 psi	Annealed
	30.0 MPa @Temperature 899 °C	4350 psi @Temperature 1650 °F	0.059" Coil
	46.0 MPa @Temperature 816 °C	6670 psi @Temperature 1500 °F	0.059" Coil
	146 MPa @Temperature 704 °C	21200 psi @Temperature 1300 °F	0.059" Coil
	359 MPa @Temperature 593 °C	52100 psi @Temperature 1100 °F	0.059" Coil
Tensile Strength, Yield	310 - 379 MPa @Strain 0.2 %	45000 - 55000 psi @Strain 0.2 %	Annealed
	22.0 MPa @Strain 0.2 %, Temperature 899 °C	3190 psi @Strain 0.2 %, Temperature 1650 °F	0.059" Coil
	39.0 MPa @Strain 0.2 %, Temperature 816 °C	5660 psi @Strain 0.2 %, Temperature 1500 °F	0.059" Coil
	110 MPa @Strain 0.2 %, Temperature 704 °C	16000 psi @Strain 0.2 %, Temperature 1300 °F	0.059" Coil
	164 MPa @Strain 0.2 %, Temperature 593 °C	23800 psi @Strain 0.2 %, Temperature 1100 °F	0.059" Coil
Elongation at Break	28 - 37 %	28 - 37 %	in 2 inches, Annealed

Component Elements Properties	Metric	English	Comments
Carbon, C	0.010 %	0.010 %
Chromium, Cr	14.50 %	14.50 %
Iron, Fe	82.251 %	82.251 %	Balance
Manganese, Mn	1.0 %	1.0 %
Nickel, Ni	0.30 %	0.30 %
Niobium, Nb (Columbium, Cb)	0.35 %	0.35 %
Nitrogen, N	0.011 %	0.011 %
Phosphorus, P	0.025 %	0.025 %
Silicon, Si	1.3 %	1.3 %
Sulfur, S	0.0030 %	0.0030 %
Titanium, Ti	0.25 %	0.25 %

Descriptive Properties
Delta r	0.5		Annealed
r-bar	1.3-1.6		Annealed

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.

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NAKS088a / 139268

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