Ni-Cu 405

UNS #N04405

Ni-Cu 405 is a nonhardenable stainless steel with acceptable resistance to sulfide stress cracking at Rockwell C 22 maximum hardness per NACE MR-01-75 and corrosion resistance is similar to 410. It has been used in the as-welded condition for welded applications that require finish machining.

Type Analysis

  • Carbon (Maximum) 0.3
  • Silicon (Maximum) 0.5
  • Nickel (Nominal) 63
  • Manganese (Maximum) 2
  • Sulfur (Maximum) 0.025-0.050
  • Iron (Nominal) 2.5
  • Copper (Nominal) 28-34


valves and pumps, pump and propeller shafts, marine fixtures and fasteners, chemical processing equipment, gasoline and fresh water tanks, crude petroleum stills, process vessels and piping, boiler feedwater heaters, heat exchangers, and deaerating heaters.

Applicable Specifications




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