SEAWATER SERVICE

Outstanding

CAVITATION RESISTANCE

Class-leading

BIOFOULING RESISTANCE

High (Cu-rich surface)

DENSITY

7.64 g/cm³

Technical Data

Composition, Mechanical & Equivalent Grades

Chemical Composition — C95800 (NAB)

CUALNIFEMN
79.0–82.08.5–9.54.0–5.04.0–5.00.8–1.5

Mechanical Properties (sand cast, heat treated)

PROPERTYUNITVALUE
Tensile StrengthMPa590–700
Yield Strength (0.2%)MPa240–290
Elongation A50%15–25
HardnessHB150–200
Densityg/cm³7.64
Melting Range°C1040–1060

International Equivalent Grades

STANDARDGRADE
ENCC333G • CuAl10Ni5Fe4
ASTMC95800
DEF STAN02-833 NS3
NORSOKMDS-D44
BSAB2

Why This Alloy

Engineering highlights

  • ≥4% Ni + ≥4% Fe — DEF STAN / NORSOK class
  • Outstanding cavitation & erosion resistance
  • Excellent fatigue strength in seawater
  • Used by global navies and offshore platforms

Applications

Industrial applications

Seawater pump casings & impellers
Propellers & propeller hubs
Subsea valve bodies
Heat exchanger plates
Manufacturing Capability
  • Sand casting
  • Centrifugal casting
  • Heat treatment (700 °C / 6h)
  • CNC machining
Surface Finishes
  • As-cast
  • Shot-blasted
  • Machined
Industries Served
  • Marine
  • Oil & Gas (offshore)
  • Defence
  • Power Generation

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