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ATI Allegheny Ludlum Stainless Steel Chromium-Nickel Type 304, Annealed (UNS S30400)

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 Chromium-Nickel Type 304, Annealed (UNS S30400).pdf
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Material Notes:
This alloy is one of the most familiar and most frequently used alloy in the stainless steel family. It may be best used in applications where the following properties are important: resistance to corrosion, prevention of product contamination, resistance to oxidation, ease of fabrication, excellent formability, beauty of appearance, ease of cleaning, high strength with low weight, good strength and toughness at cryogenic temperatures, and readily availability of a wide range of product forms. Food and beverage, sanitary, cryogenic, and pressure-containing applications are examples. Past users of Type 302 are generally now using Type 304 since AOD technology has made low carbon levels more easily attainable and economical.Min/max tensile and hardness properties below as requires by ASTM A 240 and ASME SA-240.Information provided by Allegheny Ludlum Corporation.
Physical Properties Metric English Comments
Density 7.90 g/cc
0.285 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell <= 201
<= 201
Hardness, Rockwell B <= 92
<= 92
Tensile Strength, Ultimate >= 515 MPa
>= 74700 psi
Tensile Strength, Yield >= 205 MPa
>= 29700 psi
Elongation at Break >= 40 %
>= 40 %
Modulus of Elasticity 200 GPa
29000 ksi
in tension
Charpy Impact 200 J
148 ft-lb
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
19.8 µm/m-°C

@Temperature 20.0 - 870 °C
11.0 µin/in-°F

@Temperature 68.0 - 1600 °F
Specific Heat Capacity 0.500 J/g-°C
0.120 BTU/lb-°F
Thermal Conductivity 16.3 W/m-K

@Temperature 100 °C
113 BTU-in/hr-ft²-°F

@Temperature 212 °F
21.4 W/m-K

@Temperature 500 °C
149 BTU-in/hr-ft²-°F

@Temperature 932 °F
Melting Point 1399 - 1421 °C
2550 - 2590 °F
Solidus 1399 °C
2550 °F
Liquidus 1421 °C
2590 °F
Component Elements Properties Metric English Comments
Carbon, C <= 0.080 %
<= 0.080 %
Chromium, Cr 18 - 20 %
18 - 20 %
Iron, Fe 71 %
71 %
as balance
Manganese, Mn <= 2.0 %
<= 2.0 %
Nickel, Ni 8.0 - 10.5 %
8.0 - 10.5 %
Nitrogen, N <= 0.10 %
<= 0.10 %
Phosphorous, P <= 0.045 %
<= 0.045 %
Silicon, Si <= 0.75 %
<= 0.75 %
Sulfur, S <= 0.030 %
<= 0.030 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000720 ohm-cm
0.0000720 ohm-cm
Magnetic Permeability 1.004
1.004
0% cold work
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