Description

Alloy C276 is a nickel-chromium-molybdenum alloy known for its excellent corrosion resistance in a wide range of aggressive environments. It offers superior strength, versatility, and outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.

Applications

Alloy C276 is widely used in various industrial applications where resistance to corrosion is paramount, such as chemical processing, pollution control, pulp and paper production, waste treatment, and pharmaceutical manufacturing. It is also utilized in equipment for flue gas desulfurization systems and seawater applications.

Blacksmith Applications

For blacksmiths, Alloy C276 can be employed in the production of tools and components that require exceptional corrosion resistance and high strength. It can be used to forge and fabricate specialized equipment for chemical processing, oil and gas refineries, and other corrosive environments.

Alloy C276 Forging Temperature

Forging of Alloy C276 should be carried out between 2050°F to 2250°F (1121°C to 1232°C), followed by rapid cooling, preferably in water or air. The material should be heated uniformly to avoid deformation and cracking.

Alloy C276 Heat Treatment

Alloy C276 Annealing Temperature

The annealing process for Alloy C276 includes heating the steel to 2050°F to 2150°F (1121°C to 1177°C) and holding it for an appropriate period, followed by rapid cooling in water or air. This treatment helps to relieve stress and restore the material's corrosion resistance.

Alloy C276 Normalizing Temperature

Normalizing of Alloy C276 is performed by heating the steel to 1900°F to 2010°F (1038°C to 1101°C) and holding it for sufficient time, followed by air cooling or rapid cooling in water or air. This treatment enhances the metal's mechanical properties and corrosion resistance.

Alloy C276 Hardening Temperature

Alloy C276 does not respond to conventional heat treatments for hardening. However, it can be hardened by cold working techniques such as cold-rolling, cold-drawing, or press bending, depending on the desired mechanical properties.

Alloy C276 Tempering Temperature

Tempering of Alloy C276 is generally not required. However, if additional stress relief is needed, the material can be heated to a temperature between 1100°F to 1500°F (593°C to 816°C) and held for an appropriate duration, followed by rapid cooling.

Machinability

Alloy C276 has poor machinability due to its high strength and excellent resistance to corrosion. It tends to work-harden and generate significant heat during machining. Therefore, the use of appropriate cutting tools, low cutting speeds, and ample coolant is essential.

Weldability

Alloy C276 exhibits good weldability using various welding techniques, such as gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW). However, it is important to use filler rods and electrodes with matching alloy composition to ensure optimum corrosion resistance of the weld joint.