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AK Steel 439 Ferritic Stainless steel

Category Metal , Ferrous Metal , Ferritic , Stainless Steel , T 400 Series Stainless Steel
Manufacturer AK Steel
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
AK Steel 439 has better oxidation and corrosion resistance than Type 409. This alloy also has optimum formability that is reproducible coil after coil and heat after heat. This provides special advantages when producing difficult-to-form exhaust system components. Information provided by AK Steel
Mechanical Properties Metric English Comments
Hardness, Rockwell B 74 - 78
74 - 78
Tensile Strength, Ultimate 455 - 483 MPa
66000 - 70100 psi
Tensile Strength, Yield 296 - 331 MPa

@Strain 0.200 %
42900 - 48000 psi

@Strain 0.200 %
Elongation at Break 32 - 36 %
32 - 36 %
in 2 inches
Component Elements Properties Metric English Comments
Carbon, C <= 0.025 %
<= 0.025 %
Chromium, Cr 17 - 19 %
17 - 19 %
Iron, Fe >= 78.725 %
>= 78.725 %
As Remainder
Manganese, Mn <= 0.50 %
<= 0.50 %
Nickel, Ni <= 0.50 %
<= 0.50 %
Silicon, Si <= 0.75 %
<= 0.75 %
Titanium, Ti 0.20 - 0.50 %
0.20 - 0.50 %
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