The most widely used stainless steel. Its corrosion resistance, heat resistance, strength at low temperatures and its mechanical properties are much better than Cr. type steels, because of its Ni content Forming and hardening property is excellent; hardening is not possible by heat treatment. No. megnetism. For home utensils, metal fixtures for construction and decoration purposes automobiles parts, medical appliances, for use in the food industry, the chemical industry and textile industry.