Stainless steel 300 series and 400 series difference

The 400 series stainless steel is an alloy of iron and carbon alloys. This stainless steel has martensitic structure and iron elements, so it has a normal magnet, 400 series stainless steel has a strong high-temperature oxidation resistance, and compared with carbon steel, its physical and mechanical properties have been further improved, most 400 series stainless steel can be heat treatment.

The 300 Series stainless steel is an alloy material containing iron, carbon, nickel and chromium, a non-magnetic stainless steel material with better malleable properties than the 400 series stainless steel. Because of the austenitic structure of 300 series stainless steel, so it has a strong corrosion resistance in many environments, has a good resistance to metal corrosion caused by overstress fracture performance, and its material characteristics are not affected by thermal treatment.

SUS304: Has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, stamping bending and other hot processing good, no heat treatment hardening phenomenon, no magnetism. Widely used in household products (1, 2 types of tableware), cabinets, indoor pipelines, water heaters, boilers, bathtubs, auto parts, medical equipment, building materials, chemical, food industry, agriculture, ship parts, etc.