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304 Stainless Steel (UNS S30400); Cold Finished and Annealed Bar
Categories: Metal; Ferrous Metal; Heat Resisting; Stainless Steel; T 300 Series Stainless Steel

Material Notes: Austenitic Cr-Ni stainless steel. Better corrosion resistance than Type 302. High ductility, excellent drawing, forming, and spinning properties. Essentially non-magnetic, becomes slightly magnetic when cold worked. Low carbon content means less carbide precipitation in the heat-affected zone during welding and a lower susceptibility to intergranular corrosion.

Applications: beer kegs, bellows, chemical equipment, coal hopper linings, cooking equipment, cooling coils, cryogenic vessels, dairy equipment, evaporators, flatware utensils, feedwater tubing, flexible metal hose, food processing equipment, hospital surgical equipment, hypodermic needles, kitchen sinks, marine equipment and fasteners, nuclear vessels, oil well filter screens, refrigeration equipment, paper industry, pots and pans, pressure vessels, sanitary fittings, valves, shipping drums, spinning, still tubes, textile dyeing equipment, tubing.

Corrosion Resistance: resists most oxidizing acids and salt spray.

UNS S30400; AMS 5501, 5513, 5560, 5565; ASME SA182, SA194 (8), SA213, SA240; ASTM A167, A182, A193, A194

Key Words: aisi304, AISI 304, T304, T 304, SUS304, SS304, 304SS, 304 SS, UNS S30400, AMS 5501, AMS 5513, AMS 5560, AMS 5565, AMS 5566, AMS 5567, AMS 5639, AMS 5697, ASME SA182, ASME SA194 (8), ASME SA213, ASME SA240, ASME SA249, ASME SA312, ASME SA320 (B8), ASME SA358, ASME SA376, ASME SA403, ASME SA409, ASME SA430, ASME SA479, ASME SA688, ASTM A167, ASTM A182, ASTM A193, ASTM A194, ASTM A666, FED QQ-S-763, MILSPEC MIL-S-5059, SAE 30304, DIN 1.4301, X5CrNi189, B.S. 304 S 15, EN 58E, PN 86020 (Poland), OH18N9, ISO 4954 X5CrNi189E, ISO 683/13 11, 18-8
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Physical PropertiesOriginal ValueComments
Density 8.00 g/cc
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate >= 515 MPa
@Thickness >=12.7 mm
 >= 515 MPa
@Thickness >=12.7 mm
 >= 620 MPa
@Thickness <=12.7 mm
 >= 620 MPa
@Thickness <=12.7 mm
Tensile Strength, Yield >= 205 MPa
@Strain 0.2 %,
Thickness >=12.7 mm
 >= 205 MPa
@Strain 0.2 %,
Thickness >=12.7 mm
 >= 310 MPa
@Strain 0.2 %,
Thickness <=12.7 mm
 >= 310 MPa
@Strain 0.2 %,
Thickness <=12.7 mm
Elongation at Break >= 30 %
@Thickness <=12.7 mm
 >= 30 %
@Thickness >=12.7 mm
 >= 30 %
@Thickness <=12.7 mm
 >= 30 %
@Thickness >=12.7 mm
Reduction of Area >= 40 %
@Thickness <=12.7 mm
 >= 40 %
@Thickness >=12.7 mm
 >= 40 %
@Thickness <=12.7 mm
 >= 40 %
@Thickness >=12.7 mm
Modulus of Elasticity 193 GPa
Poissons Ratio 0.29
Shear Modulus 77.0 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000720 ohm-cm
@Temperature 20.0 °C
 0.000116 ohm-cm
@Temperature 650 °C
Magnetic Permeability 1.020at RT
 
Thermal PropertiesOriginal ValueComments
CTE, linear 17.3 µm/m-°C
@Temperature 0.000 - 100 °C
 17.8 µm/m-°C
@Temperature 0.000 - 315 °C
 18.4 µm/m-°C
@Temperature 0.000 - 538 °C
 18.7 µm/m-°C
@Temperature 0.000 - 650 °C
Specific Heat Capacity 0.500 J/g-°C
@Temperature 0.000 - 100 °C
Thermal Conductivity 16.2 W/m-K
@Temperature 0.000 - 100 °C
 21.5 W/m-K
@Temperature 500 °C
Melting Point 1400 - 1455 °C
Solidus 1400 °C
Liquidus 1455 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C <= 0.080 %
Chromium, Cr 18 - 20 %
Iron, Fe 66.345 - 74 %As remainder
Manganese, Mn <= 2.0 %
Nickel, Ni 8.0 - 10.5 %
Phosphorus, P <= 0.045 %
Silicon, Si <= 1.0 %
Sulfur, S <= 0.030 %
 
Descriptive Properties
SpecificationASTM A 276

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