302 Stainless Steel Strip, ASTMA-666, a general purpose stainless alloy, is 18% chromium and 8% nickel. It possesses excellent resistance to heat and corrosion. Type 302 cannot be hardened by heat treatment and is slightly magnetic after cold working. It welds easily. Gibbs Interwire stocks Type 302 Stainless in gauges from .003 to .030 precision slit to widths from .022″ to 12″