Alloy represents an excellent combination of corrosion resistance and fabricability. Past users of AISI 302 Stainless Steel Plate are generally now using 304 alloy since AOD technology has made lower carbon levels more easily attainable and economical. There are instances, such as in temper rolled products, when AISI 302 Stainless Steel Plate alloy is preferred over 304 since the higher carbon permits meeting of yield and tensile strength requirements while maintaining a higher level of ductility (elongation) versus that of the lower carbon T304. The true 302 melt is rare as most are using 304 to apply as 304 and AISI 302 Stainless Steel Plate applications. All 304 can qualify as 302 since it is a subset of 302 however not all 302 can be 304.
Nominal Composition
C: 0.15 max
Mn: 2.0 max
P: 0.045 max
S: 0.030 max
Si: 0.75 max
Cr: 17.0 – 19.0
Ni: 8.0 – 10.0
N: 0.10 max
Fe: BAL
Physical Properties
At 70°F (At 20°C)
Density
0.285 lb./in3 / (7.90 g/cm3)
Modulus of Elasticity (E)
29.0 x 10³ ksi / (200 x 10³MPa in tension)
Coefficient of Expansion
9.2 x 10-6 microinches/in.-°F (68-212°F) / (16.6 μm/m-°C) (20-100°C)
Electrical Resistivity
28.3 μ ohm.in / (72 μ ohm.cm)
Thermal Conductivity
9.4 Btu-in./ft.2hr.-°F (100°C) / (16.2 W/m-K (100°C))
Applicable Specifications
SA-240, ASTM A240
Typical Mechanical Properties – Typical Room Temperature Mechanical Properties
Typical mechanical properties are based on AK source on ASTM A240
Condition: Annealed
Tensile Strength (UTS): 95 ksi (655 MPa)
0.2% YS: 42 ksi (290 MPa)
Elongation% in 2” (50.8 mm): 55%
Hardness Rockwell: 84 HRBW
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