Hastelloy C-276

Hastelloy C-276 is a nickel-molybdenum-chromium corrosion-resistant alloy known for its exceptional resistance to aggressive chemical environments. It provides strong resistance to pitting, crevice corrosion, and stress-corrosion cracking, making it particularly suitable for critical components in chemical processing, oil & gas, and pollution-control equipment.

Appearance & Properties

Color: Silver-gray to bright silver-gray

Density: Approx. 8.89 g/cm³

Tensile Strength: Typically ≥690 MPa in the annealed condition

Corrosion Resistance: Excellent

Acid Resistance: Excellent

Machinability: Difficult

High-Temperature Performance: Good

Weldability: Good

Magnetism: Generally essentially non-magnetic

Surface Finishes: Blasting, polishing, grinding, pickling, passivation, etc.

Typical Applications

Hastelloy C-276 is widely used in chemical processing, oil and gas, marine engineering, energy, pharmaceutical processing, flue-gas desulfurization, and pollution-control equipment.

Typical parts include valve components, pump parts, flanges, nozzles, pipe fittings, reactor components, heat-exchanger parts, and highly corrosion-resistant precision CNC components.

Advantages

• Exceptional overall corrosion resistance

• Good resistance to pitting and crevice corrosion

• Good resistance to stress-corrosion cracking

• Suitable for many aggressive chemical media

• Ideal for severe chemical-processing environments

Limitations

• Very difficult to CNC machine

• Strong tendency to work harden

• High tool wear and relatively low machining efficiency

• High material and machining costs