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Stainless steel is roughly classified according to its chemical composition and metal structure. In terms of chemical composition, it is classified into Fe-Cr-based and Fe-Cr-Ni-based. In terms of metal structure, austenitic (18Cr-8Ni), ferritic (18Cr), It is classified into martensitic (13Cr), biphasic, and lithic hardening systems.

Guidelines for Handling Steel Types by its Use

    Austenite
  • Face-centered orthogonal lattice crystal structure
  • Excellent corrosion and heat resistance
  • Excellent processability and formability
  • Material in products that require processability. Such as Food, chemical, nuclear power, plumbing, Corrosion resistance of Western dishes, electronic parts, etc.
  • Representative steel grade STS304
    Ferrite
  • Body-centered cubic crystal structure
  • Low price Compared to austenitic
  • Excellent oxidation and low coefficient of thermal expansion
  • Material for products in General corrosion resistance requirements. Such asHome appliances, 2 types of Western dishes, Building interior and exterior materials, railway vehicles, Interior and exterior materials, automobile exhaust system.
  • Representative steel grade STS430
    Martensite
  • Ferromagnetic at room temperature
  • Inferior to general corrosion resistance but excellent in strength, have an organization of Austenite that are safe at high temperatures
  • Material for products requiring abrasion resistance. Such as Normal blade, type 1 Western tableware, Disc brake, wear-resistant, Required mechanical parts, automobiles, Exhaust system, etc., high temperature corrosion resistance.
  • Representative steel grade STS410