Stresses may result from cold deformation of the alloy during forming, or by roller expanding tubes into tubesheets, or by welding operations which produce stresses from the thermal cycles used. Stress levels may be reduced by annealing or stress relieving heat treatments following deformation, thereby reducing sensitivity to halide stress corrosion cracking. The low carbon Type 304L material is the better choice for service in the stress relieved condition in environments which might cause intergranular corrosion.
Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*
| Element | 302 |
| Carbon | 0.15 |
| Chromium | 17.0-19.0 |
| Nickel | 8.0-10.0 |
| Manganese | 2.00 |
| Silicon | 0.75 |
| Nitrogen | 0.10 |
| Phosphorus | 0.045 |
| Sulfur | 0.030 |
To be considered Type 302, a stainless steel must be composed of the follow:
Cr 17-19%
Ni 8-10%
Mn 2%
Si 1%
C 0.15%
S 0.03%
P 0.045%
302 Stainless Steel
GNEE is an experienced 302 Stainless Steel supplier. 302 Stainless is arguably the most common form of stainless on the market. Having high similarities to 304 stainless except with a higher carbon count than 304, the 302 remains just as versatile a stainless steel out there. Often it is used in strip and wire format with high toughness and comparable corrosion resistance. However, this stainless steel is not hardened by heat treatment and is usually annealed in addition to its easy fabrication and formability
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