Alloy 302 is a variations of the 18% chromium / 8% nickel austenitic alloy, which is the most familiar and the most frequently used in the stainless steel family. Alloy 302 is a slightly higher carbon version of 304, often found in strip and wire forms. It is a tough, ductile grade that demonstrates comparable corrosion resistance, is non-magnetic, and is not hardenable by heat treatment. Alloy 302 is usually used in its annealed condition and has a high ease of fabrication and formability.
Specifications: UNS S30200
Although many applications have shifted to 304 and 304L due to advances in melting technology, availability, and cost, Alloy 302 is still used in a variety of industries. Some examples include:
Formed into all types of washers, springs, screens, and cables
Food and beverage industry
Pressure containing applications
Sanitary or cryogenic applications
Some examples of products that are partially or completely constructed of 302 include:
ASTM/ASME: UNS S30200
Provides useful resistance to corrosion on a wide range of moderately oxidizing to moderately reducing environments
The 18 -19% of chromium which this alloy contains provides resistance to oxidizing environments such as dilute nitric acid.
Resistant to moderately aggressive organic acids such as acetic, and reducing acids such as phosphoric.
The 9-11% of nickel contained in this alloy provides resistance to moderately reducing environments.