430 stainless square tube

Corrosion Resistance

Grade 430 has good resistance to a wide variety of corrosive enviornments, including nitric acid and some organic acids. It attains its maximum corrosion resistance when in the highly polished or buffed condition. In general its resistance to pitting and crevice corrosion resistance is close to that of grade 304. Stress corrosion cracking resistance of Grade 430 is very high, as it is for all ferritic grades.

Heat Resistance

Grade 430 resists oxidation in intermittent service up to 870째C and to 815째C in continuous service. This grade may become brittle at room temperature after prolonged heating in the 400-600째C range. This effect can be eliminated by annealing.