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Products & Technology

High Atmospheric Corrosion Resistant Steel Plates for High Salinity Environments

Suitable for harsh environments with high levels
of airborne salt

Products Lineup according to the amount of airborne salt while taking economic efficiency into account.
Medium salt type : LALACTM-HS(Cu-Ni-Sn-Nb series)
ACL-Type1(1.5Ni-Mo series)
High salt type : ACL-Type2(2.5Ni)

Shinkoji-ohashi bridge
(Niigata prefecture)


  • Usable without painting, due to excellent atmospheric corrosion-resistance, even in environments with high levels of airborne salt
  • Minimal initial rust outflow results in a more attractive appearance
  • Mechanical properties are guaranteed to be equivalent to JIS G3114 (SMA atmospheric corrosion-resistant hot-rolled steel for welded structures)
  • Low carbon content and composition offering low vulnerability to weld cracking, for excellent weldability and weld joint performance

Examples of Product Characteristics

Corrosion resistance of LALAC-HS is higher than JIS G 3114 SMA in high salinity condition and its corrosion resistance is almost equivalent to JFE-ACL-Type1

For applications where consideration is given to visual appearance, e.g., by preventing rust outflow, consider the use of CUPTEN COAT™, a rust-stabilizing surface treatment for atmospheric corrosion-resistant steels (protective rust maturation), or e-RUS™ (protective rust acceleration).