CarTech 204-Cu stainless is a copper-containing, low-nickel, nitrogen-strengthened, austenitic stainless steel. The nitrogen addition results in higher annealed strength than CarTech 304 stainless; however, the copper addition reduces the work hardening rate to provide cold worked properties similar to CarTech 304 stainless. The alloy is nonmagnetic in the annealed condition and remains nonmagnetic after cold working. Cold forming characteristics are superior to 200 series stainless steels and similar to CarTech 304 stainless.

CarTech 204-Cu stainless should be considered for applications where CarTech 304 stainless has been previously used. These have included wire products such as spring, fence, rope, belt, nail, electropolished, pole-line, buttress screw and windshield wiper arms.