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AK Steel 441 Ferritic Stainless steel

Category	Metal , Ferrous Metal , Stainless Steel
Manufacturer	AK Steel
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	AK Steel 441 Ferritic Stainless steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

AK Steel 441 is a 17-18% by weight, chromium and columbium bearing ferritic stainless steel which provides good high-temperature strength (exceeding that of Types 409 and AK Steel 439 LT Stainless Steels) plus good corrosion resistance in many exhaust gas environments (equivalent to AK Steel 439 LT and 18 Cr-Cb Stainless Steels). Due to its finer, equiaxed grain structure, this alloy offers improved formability over standard AK Steel 18 Cr-Cb Stainless Steel.Information provided by AK Steel.

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	80	80	Annealed
Tensile Strength, Ultimate	489 MPa	70900 psi	Annealed
	30.3 MPa @Temperature 871 °C	4390 psi @Temperature 1600 °F
	133 MPa @Temperature 704 °C	19300 psi @Temperature 1300 °F
	351 MPa @Temperature 593 °C	50900 psi @Temperature 1100 °F
Tensile Strength, Yield	2.90 MPa @Temperature 871 °C	421 psi @Temperature 1600 °F
	14.4 MPa @Temperature 704 °C	2090 psi @Temperature 1300 °F
	23.1 MPa @Temperature 593 °C	3350 psi @Temperature 1100 °F
	326 MPa @Strain 0.200 %	47300 psi @Strain 0.200 %	Annealed
Elongation at Break	35.9 %	35.9 %	In 2", Annealed
Modulus of Rupture	0.0345 GPa @Temperature 704 °C, Time 360000 sec	5.00 ksi @Temperature 1300 °F, Time 100 hour

Component Elements Properties	Metric	English	Comments
Carbon, C	0.012 %	0.012 %
Chromium, Cr	18 %	18 %
Iron, Fe	80.694 %	80.694 %	Balance
Manganese, Mn	0.30 %	0.30 %
Niobium, Nb (Columbium, Cb)	0.45 %	0.45 %
Phosphorous, P	0.023 %	0.023 %
Silicon, Si	0.35 %	0.35 %
Sulfur, S	0.0010 %	0.0010 %
Titanium, Ti	0.17 %	0.17 %

Descriptive Properties	Value	Comments
n Value (10% -Ult)	0.207	Annealed
Typical rm value	1.31

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