Stainless Steel AISI Type No. XXX notation

2XX (Cr-Ni-Mn) Austenite
3XX (Cr-Ni) Austenite
4XX (Cr) Ferrite
4XX (Cr) Martensite
6XX (Cr-Ni) Precipitation Hardening (석출경화)
  • Cr : Chromium
  • Ni : Nikel
  • Mn : Manganese
  • Mo : Molybdenum
  • Ti : Titanium
  • Cb : Camium  Al : Aluminium
  • Fe : Ferrum

Material Mark

A (Fe 50% ↑ ) Ferrous Metals
B (Fe 50% ↓ ) Non-ferrous Metals
C Cementifious, Ceramic, Concrete and Masonry Materials
D Miscellaneous Materials
E Miscellaneous Subjects
F Materials for Specific Applications
G Corrosion, Deterioration, and Degradation of Materials
ES Emergency Standards
P Proposals

ex1) ASME = SA = Ferrous Metals      ex2) ASTM = A = Ferrous Metals

ex3) ANSI / ASME ” Partial unity since 1980 ” = ANSI / ASME

PIPING MATERIAL



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