ATI Allegheny Ludlum Stainless Steel Type 348 (UNS S34800)

Category	Metal , Ferrous Metal , Stainless Steel , T 300 Series Stainless Steel
Manufacturer	ATI Allegheny Ludlum
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	ATI Allegheny Ludlum Stainless Steel Type 348 (UNS S34800).pdf
Price	EMAIL US sales@lookpolymers.com
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Material Notes:

AL 348 is a stabilized stainless steel which offers excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800° to 1500°C. The addition of columbium and tantalum stabilize against chromium carbide formation. For nuclear applications AL 348 has restricted cobalt and tantalum content.Tensile and hardness data below per ASTM A 240 and ASME SA-240Information provided by Allegheny Ludlum Corporation.

Physical Properties	Metric	English	Comments
Density	7.96 g/cc	0.288 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	<= 201	<= 201	plate
Hardness, Rockwell B	<= 92	<= 92	sheet or strip
Tensile Strength, Ultimate	>= 515 MPa	>= 74700 psi
Tensile Strength, Yield	>= 205 MPa @Strain 0.200 %	>= 29700 psi @Strain 0.200 %
Elongation at Break	>= 40 %	>= 40 %	in 2" (50 mm)
Modulus of Elasticity	193 GPa	28000 ksi	in tension
Fatigue Strength	180 MPa	26100 psi	endurance limit; test conditions not reported

Thermal Properties	Metric	English	Comments
CTE, linear	16.6 µm/m-°C @Temperature 20.0 - 100 °C	9.22 µin/in-°F @Temperature 68.0 - 212 °F
	18.9 µm/m-°C @Temperature 20.0 - 600 °C	10.5 µin/in-°F @Temperature 68.0 - 1110 °F
	20.5 µm/m-°C @Temperature 20.0 - 1000 °C	11.4 µin/in-°F @Temperature 68.0 - 1830 °F
Specific Heat Capacity	0.500 J/g-°C	0.120 BTU/lb-°F
Thermal Conductivity	16.3 W/m-K @Temperature 20.0 - 100 °C	113 BTU-in/hr-ft²-°F @Temperature 68.0 - 212 °F
Melting Point	1398 - 1446 °C	2548 - 2635 °F
Solidus	1398 °C	2548 °F
Liquidus	1446 °C	2635 °F
Maximum Service Temperature, Air	816 °C	1500 °F	good for prolonged service

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.080 %	<= 0.080 %
Chromium, Cr	17 - 19 %	17 - 19 %
Cobalt, Co	<= 0.20 %	<= 0.20 %
Iron, Fe	70 %	70 %	as balance
Manganese, Mn	<= 2.0 %	<= 2.0 %
Nb + Ta	<= 1.0 %	<= 1.0 %
Nickel, Ni	9.0 - 13 %	9.0 - 13 %
Phosphorous, P	<= 0.045 %	<= 0.045 %
Silicon, Si	<= 0.75 %	<= 0.75 %
Sulfur, S	<= 0.030 %	<= 0.030 %
Tantalum, Ta	<= 0.10 %	<= 0.10 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000720 ohm-cm	0.0000720 ohm-cm
Magnetic Permeability	<= 1.02	<= 1.02	typically < 1.02 at 200H; increases with cold work.

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