AK Steel 430 ULTRA FORM® Stainless Steel

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AK Steel 430 ULTRA FORM® Stainless Steel
Categories:	Metal; Ferrous Metal; Stainless Steel
Material Notes:	430 ULTRA FORM® Stainless Steel was developed as a more formable version of Type 430 stainless steel. It is particularly suited for parts requiring more complex shapes. 430 ULTRA FORM Stainless Steel combines good corrosion resistance with heat and oxidation resistance up to 1500 °F (816 °C) while having improved mechanical properties over regular Type 430. 430 ULTRA FORM Stainless Steel has a more equiaxed grain microstructure and contains a small addition of titanium that stabilizes the alloy and improves weldability. The alloy can be supplied with a dull pickled, temper passed finish or a directional polished finish. Information provided by AK Steel.
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Physical Properties	Original Value	Comments

Density	7.74 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	77.5 @Thickness 0.508 - 1.27 mm
	80.5 @Thickness >=1.27 mm
Tensile Strength, Ultimate	494 MPa	Longitudinal to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	494 MPa	Transverse to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	506 MPa	Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	491 MPa @Thickness >=1.27 mm
	503 MPa @Thickness 0.508 - 1.27 mm
Tensile Strength, Yield	42.4 MPa @Strain 0.2 %	Longitudinal to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	44.6 MPa @Strain 0.2 %	Transverse to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	45.2 MPa @Strain 0.2 %	Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	343 MPa @Strain 0.2 %	0.02"-0.05"
	354 MPa @Strain 0.2 %	>0.05"
Elongation at Break	27.2 %	In 2", Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	29.2 %	In 2", Transverse to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	29.7 %	In 2", Longitudinal to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	29.5 % @Thickness 0.508 - 1.27 mm	In 2"
	31.2 % @Thickness >=1.27 mm	In 2"
Modulus of Elasticity	200 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000600 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	5.80 µin/in-°F @Temperature -17.8 - 37.8 °C
	6.30 µin/in-°F @Temperature -17.8 - 281 °C
Specific Heat Capacity	0.110 BTU/lb-°F
Thermal Conductivity	26.1 W/m-K @Temperature 100 °C
	26.3 W/m-K @Temperature 500 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.035 %
Chromium, Cr	17 %
Iron, Fe	82.113 %	Balance
Manganese, Mn	0.30 %
Phosphorus, P	0.030 %
Silicon, Si	0.35 %
Sulfur, S	0.0020 %
Titanium, Ti	0.17 %

Descriptive Properties
Chemical Immersion Testing (mm/yr)	<2	20% Sodium Hydroxide
	<2	60% Acetic Acid
	<2	10% Citric Acid
	13	1% Hydrochloric Acid
	2	Household Bleach
	38	5% Sulfuric Acid
delta r	0.48	Plastic strain ratio 18%, ASTM E517
delta r (Max-Min)	0.9	Plastic strain ratio 18%, ASTM E517
n Value (10% -Ult)	0.192	Transverse to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	0.194	Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
	0.2	Longitudinal to Sheet Rolling Direction, Tensile Hardness Test (ASTM E8, E694, E18, A370)
Olsen Cup Height (in)	0.319
Ridging No.	2	Plastic strain ratio 18%, ASTM E517
r-Value	1.24	Rolling Direction, Plastic strain ratio 18%, ASTM E517
	1.31	Longitudinal to Sheet Rolling Direction, Plastic strain ratio at 18%, ASTM E517
	2.14	Transverse to Sheet Rolling Direction, Plastic strain ratio 18%, ASTM E517
Strength Coefficient (ksi)	119.6	Transverse to Sheet Rolling Direction, Plastic strain ratio 18%, ASTM E517
	121	Longitudinal to Sheet Rolling Direction, Plastic strain ratio at 18%, ASTM E517
	123.3	Rolling Direction, Plastic strain ratio 18%, ASTM E517
Typical r_m value	1.48	Plastic strain ratio 18%, ASTM E517

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 go back to viewing the property data in MatWeb's normal format.

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