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AK Steel 439 ULTRA FORM® Stainless Steel

Category	Metal , Ferrous Metal , Stainless Steel
Manufacturer	AK Steel
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	AK Steel 439 ULTRA FORM® Stainless Steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

AK Steel 439 ULTRA FORM™ was developed for applications requiring oxidation and corrosion resistance superior to Type 409 as well as superior formability to AK Steel 439 Stainless Steel. As a result, the material offers advantages for parts requiring more complex shapes than possible from these stainless steels. Examples include tubular manifolds and other exhaust system components where temperatures may exceed the oxidation limit of Type 409, or where wet corrosion resistance, particularly to chlorides, is needed.Information provided by AK Steel.

Physical Properties	Metric	English	Comments
Density	7.685 g/cc	0.2776 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	72.9	72.9	Annealed
	74	74	Annealed, Transverse Orientation
	85.4	85.4	5% Cold Worked
	89.1	89.1	10% Cold Worked
	92.1	92.1	15% Cold Worked
	95.6	95.6	30% Cold Worked
	96.9	96.9	50% Cold Worked
Tensile Strength, Ultimate	438 MPa	63500 psi	Annealed
	484 MPa	70200 psi	5% Cold Worked
	546 MPa	79200 psi	10% Cold Worked
	618 MPa	89600 psi	15% Cold Worked
	713 MPa	103000 psi	30% Cold Worked
	785 MPa	114000 psi	50% Cold Worked
	35.0 MPa @Temperature 816 °C	5080 psi @Temperature 1500 °F
	70.0 MPa @Temperature 704 °C	10200 psi @Temperature 1300 °F
	225 MPa @Temperature 593 °C	32600 psi @Temperature 1100 °F
	373 MPa @Temperature 371 °C	54100 psi @Temperature 700 °F
	404 MPa @Temperature 204 °C	58600 psi @Temperature 400 °F
	462 MPa @Temperature 23.9 °C	67000 psi @Temperature 75.0 °F	Annealed, Transverse Orientation
Tensile Strength, Yield	263 MPa @Strain 0.200 %	38100 psi @Strain 0.200 %	Annealed
	460 MPa @Strain 0.200 %	66700 psi @Strain 0.200 %	5% Cold Worked
	544 MPa @Strain 0.200 %	78900 psi @Strain 0.200 %	10% Cold Worked
	613 MPa @Strain 0.200 %	88900 psi @Strain 0.200 %	15% Cold Worked
	680 MPa @Strain 0.200 %	98600 psi @Strain 0.200 %	30% Cold Worked
	753 MPa @Strain 0.200 %	109000 psi @Strain 0.200 %	50% Cold Worked
	25.0 MPa @Strain 0.200 %, Temperature 816 °C	3630 psi @Strain 0.200 %, Temperature 1500 °F
	49.0 MPa @Strain 0.200 %, Temperature 704 °C	7110 psi @Strain 0.200 %, Temperature 1300 °F
	130 MPa @Strain 0.200 %, Temperature 593 °C	18900 psi @Strain 0.200 %, Temperature 1100 °F
	191 MPa @Strain 0.200 %, Temperature 371 °C	27700 psi @Strain 0.200 %, Temperature 700 °F
	206 MPa @Strain 0.200 %, Temperature 204 °C	29900 psi @Strain 0.200 %, Temperature 400 °F
	283 MPa @Strain 0.200 %, Temperature 21.1 °C	41000 psi @Strain 0.200 %, Temperature 70.0 °F	Annealed, Transverse Orientation
Elongation at Break	2.8 %	2.8 %	In 2", 50% Cold Worked
	3.8 %	3.8 %	In 2", 30% Cold Worked
	6.5 %	6.5 %	In 2", 15% Cold Worked
	12 %	12 %	In 2", 10% Cold Worked
	24.3 %	24.3 %	In 2", 5% Cold Worked
	34.8 %	34.8 %	In 2", Annealed
	35 %	35 %	In 2", Annealed, Transverse Orientation
Fatigue Strength	10.0 MPa @# of Cycles 1.00e+7 , Temperature 816 °C	1450 psi @# of Cycles 1.00e+7 , Temperature 1500 °F	r=0.1
	28.0 MPa @# of Cycles 1.00e+7 , Temperature 704 °C	4060 psi @# of Cycles 1.00e+7 , Temperature 1300 °F	r=0.1

Component Elements Properties	Metric	English	Comments
Carbon, C	0.010 %	0.010 %
Chromium, Cr	17.35 %	17.35 %
Iron, Fe	81.3535 %	81.3535 %	Balance
Manganese, Mn	0.25 %	0.25 %
Molybdenum, Mo	0.10 %	0.10 %
Nickel, Ni	0.20 %	0.20 %
Niobium, Nb (Columbium, Cb)	0.020 %	0.020 %
Nitrogen, N	0.010 %	0.010 %
Phosphorous, P	0.020 %	0.020 %
Silicon, Si	0.35 %	0.35 %
Sulfur, S	0.0015 %	0.0015 %
Titanium, Ti	0.335 %	0.335 %

Descriptive Properties	Value	Comments
Olsen Cup Height (in)	0.33	0.022"-0.028"
	0.342	0.030"
	0.371	0.035"
	0.408	0.056"-0.059"
Typical rm value	1.62	0.056"-0.059"
	1.78	0.035"
	1.96	0.022"-0.028"
	2.03	0.030"

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