ATI Allegheny Ludlum Stainless Steel 334 (UNS S33400)

Category	Metal , Ferrous Metal , Stainless Steel , T 300 Series Stainless Steel
Manufacturer	ATI Allegheny Ludlum
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	ATI Allegheny Ludlum Stainless Steel 334 (UNS S33400).pdf
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Material Notes:

Allegheny Ludlum Type 334 is a titanium- and aluminum-bearing austenitic stainless steel offering superior elevated temperature scaling resistance compared to the conventional chromium-nickel stainless steels such as Type 304. The oxidation resistance of Type 334 compares favorably with higher alloyed grades up to 1900°F, making it a good candidate alloy for use in emission control systems, and other applications where resistance to elevated temperature degradation is important.Information provided by Allegheny Ludlum Corporation.

Physical Properties	Metric	English	Comments
Density	8.03 g/cc	0.290 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	82	82
Tensile Strength, Ultimate	572.4 MPa	83020 psi
	103.4 MPa @Temperature 982 °C	15000 psi @Temperature 1800 °F	1800°F
	469 MPa @Temperature 538 °C	68000 psi @Temperature 1000 °F	1000°F
Tensile Strength, Yield	241.4 MPa	35010 psi
	62.8 MPa @Temperature 982 °C	9110 psi @Temperature 1800 °F
	172.4 MPa @Temperature 538 °C	25000 psi @Temperature 1000 °F
Elongation at Break	40 %	40 %
Modulus of Elasticity	200 GPa	29000 ksi

Thermal Properties	Metric	English	Comments
CTE, linear	17.04 µm/m-°C @Temperature 20.0 - 100 °C	9.467 µin/in-°F @Temperature 68.0 - 212 °F
	17.48 µm/m-°C @Temperature 20.0 - 200 °C	9.711 µin/in-°F @Temperature 68.0 - 392 °F
	17.66 µm/m-°C @Temperature 20.0 - 250 °C	9.811 µin/in-°F @Temperature 68.0 - 482 °F
	18.31 µm/m-°C @Temperature 20.0 - 400 °C	10.17 µin/in-°F @Temperature 68.0 - 752 °F
	18.54 µm/m-°C @Temperature 20.0 - 500 °C	10.30 µin/in-°F @Temperature 68.0 - 932 °F
	19.22 µm/m-°C @Temperature 20.0 - 700 °C	10.68 µin/in-°F @Temperature 68.0 - 1290 °F
Thermal Conductivity	12.9 W/m-K @Temperature 20.0 - 50.0 °C	89.5 BTU-in/hr-ft²-°F @Temperature 68.0 - 122 °F
Maximum Service Temperature, Air	1038 °C	1900 °F	oxidation resistance is good

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.40 %	<= 0.40 %
Carbon, C	<= 0.030 %	<= 0.030 %
Chromium, Cr	19 - 19.5 %	19 - 19.5 %
Copper, Cu	<= 0.20 %	<= 0.20 %
Iron, Fe	60 %	60 %	as balance
Manganese, Mn	<= 1.0 %	<= 1.0 %
Nickel, Ni	19 - 20 %	19 - 20 %
Phosphorous, P	<= 0.020 %	<= 0.020 %
Silicon, Si	<= 0.75 %	<= 0.75 %
Sulfur, S	<= 0.015 %	<= 0.015 %
Titanium, Ti	<= 0.40 %	<= 0.40 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000891 ohm-cm	0.0000891 ohm-cm

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