1. Basic Overview
Nickel-chromium-molybdenum solid-solution strengthened alloy with excellent corrosion resistance and high strength at both room and elevated temperatures.
2. Chemical Composition (wt%, typical)
Element Composition Ni Balance Cr 20.0 – 23.0 Mo 8.0 – 10.0 Fe ≤ 5.0 Nb + Ta 3.15 – 4.15 C ≤ 0.10 Mn ≤ 0.50 Si ≤ 0.50
3. Mechanical Properties (Annealed, Room Temperature)
Property Value Tensile Strength ≥ 760 MPa Yield Strength (0.2% offset) ≥ 345 MPa Elongation ≥ 30 % Density 8.44 g/cm³ Melting Range 1290 – 1350 °C
Key Features
Excellent resistance to pitting, crevice corrosion and chloride-induced SCC
Outstanding corrosion resistance in sour oil & gas environments (H₂S, CO₂, chlorides)
High strength and good creep resistance up to 980°C
Excellent oxidation resistance at elevated temperatures
Complies with NACE MR0175 / ISO 15156
Typical Applications
Oil & gas downhole equipment, valves, fasteners, tubing
Aerospace engine and exhaust components
Chemical processing reactors, heat exchangers, piping
Marine and seawater handling systems
Furnace and high-temperature structural parts