Nickel-Chromium-Molybdenum Alloy

Hastelloy C-4

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Hastelloy C-4 is an austenitic, low-carbon nickel-molybdenum-chromium alloy that exhibits excellent stability at temperatures ranging from 650°C to 1040°C. This composition enhances its resistance to intergranular corrosion, ensuring superior performance in harsh environments. Under appropriate manufacturing conditions, it can effectively prevent blade line corrosion sensitivity and weld heat-affected zone corrosion.

Applications
  • Flue gas desulfurization systems
  • Pickling and acid regeneration plants
  • Acetic acid and agricultural chemicals production
  • Titanium dioxide production (chlorination process)
  • Electrolytic plating
Specifications
  • Plate/Sheet Plate/Sheet
    Thickness: 0.5mm-60mm
    Width: 500mm-2500mm
    Length: 1000mm-6000mm
  • Rod Rod
    Diameter: 6mm-400mm
    Length: 1000mm-6000mm
  • Tube Tube
    Outer Diameter: 6mm-273mm
    Wall Thickness: 0.5mm-20mm
    Length: ≤ 12000mm
  • Wire Wire
    Diameter: 0.1mm-10mm
    Delivery Forms: Coiled wire or straight wire
Chemical Composition
Min. Max.
Nickel (Ni) Rest Rest
Chromium (Cr) 14 18
Molybdenum (Mo) 14 17
Iron (Fe)   3
Cobalt (Co)   2
Carbon (C)   0.015
Manganese (Mn)   1
Silicon (Si)   0.08
Phosphorus (P)   0.04
Sulfur (S)   0.03
Titanium (Ti)   0.7
Physical & Mechanical Properties
Grades Density (g/cm³) Melting Point (°C)
C-4 8.64 1350-1380°C
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