Features of SN-1

  • Corrosion Resistance

    Suitable for all concentrations of HNO3 below 60℃, in either gaseous or liquid phases.

  • High Strength

    Enable large scale nitric acid plant and equipment construction.

  • Good Formability

    "Forming and welding can be carried out almost the same way as conventional austenitic stainless steel."

Chemical composition17Cr-14Ni-4Si-LowC

Mechanical properties

The scope of application in nitric acid Production

Available sizesPlease contact us for other size than shown below.

Usage history in industrial nitric acid plants


  • Use dedicated welding materials for SN-1.
  • Please contact us for welding manual.
  • ARC Welding Rods・・・WEL SN-1
  • TIG Welding Rods・・・WEL TIG SN-1

Material Specification

  • Approved by Class NK
  • Registered to ASTM A240/240M S30616

Cost ratio for storage tank construction