AK Steel 434 Ferritic Stainless steel

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AK Steel 434 Ferritic Stainless steel
Categories:	Metal; Ferrous Metal; Ferritic; Stainless Steel; T 400 Series Stainless Steel
Material Notes:	AK Steel 434 is a modification of Type 430, the addition of molybdenum increases this alloy's corrosion resistance and its attack from many deicing chemicals. It also provides good heat and oxidation resistance up to 1500°F as well as good mechanical properties. AK Steel 434 is Ferro-magnetic. Information provided by AK Steel
Key Words:	UNS S43400
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Physical Properties	Metric	English	Comments

Density	7.74 g/cc	0.280 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	85	85
Tensile Strength, Ultimate	483 MPa	70100 psi
Tensile Strength, Yield	310 MPa @Strain 0.2 %	45000 psi @Strain 0.2 %
Elongation at Break	25 %	25 %	in 2 inches
Modulus of Elasticity	200 GPa	29000 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000600 ohm-cm	0.0000600 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	10.4 µm/m-°C @Temperature 0.000 - 100 °C	5.78 µin/in-°F @Temperature 32.0 - 212 °F
	11.4 µm/m-°C @Temperature <=538 °C	6.33 µin/in-°F @Temperature <=1000 °F
Specific Heat Capacity	0.460 J/g-°C @Temperature 0.000 - 100 °C	0.110 BTU/lb-°F @Temperature 32.0 - 212 °F
Thermal Conductivity	26.1 W/m-K @Temperature 100 °C	181 BTU-in/hr-ft²-°F @Temperature 212 °F
	26.3 W/m-K @Temperature 500 °C	183 BTU-in/hr-ft²-°F @Temperature 932 °F
Melting Point	1482 - 1532 °C	2700 - 2790 °F
Solidus	1482 °C	2700 °F
Liquidus	1532 °C	2790 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.080 %	<= 0.080 %
Chromium, Cr	16 - 18 %	16 - 18 %
Iron, Fe	>= 78.57 %	>= 78.57 %	As Remainder
Manganese, Mn	<= 1.0 %	<= 1.0 %
Molybdenum, Mo	0.75 - 1.25 %	0.75 - 1.25 %
Nickel, Ni	<= 0.50 %	<= 0.50 %
Silicon, Si	<= 0.60 %	<= 0.60 %

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NAKS097 / 14700

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