Stellite 6 products

Stellite 6 is a high-strength, high-wear-resistant, high-temperature alloy, which is often used to manufacture wear-resistant, corrosion-resistant, high-temperature and high-pressure mechanical parts. The following will introduce some characteristics and applications of Stellite 6 alloy.

Characteristics

Stellite 6 alloy is a cobalt-based alloy, whose main components are cobalt, chromium, molybdenum and carbon. It has high hardness, strong wear resistance, good corrosion resistance, excellent high-temperature resistance, and good comprehensive performance.

Application

Stellite 6 alloy can be used to manufacture a variety of wear-resistant, corrosion-resistant, high-temperature and high-pressure parts, such as:

Gas turbine blades and guide vanes in aircraft engines and turbojets;

Oil well pumps and pumping unit parts in oil and gas extraction;

Valves, pump bodies, sleeves, nozzles and acid-resistant equipment in the chemical and metallurgical industries;

Artificial heart valves in medical equipment, etc.

Preparation method

The preparation method of Stellite 6 alloy includes various methods, such as:

Powder metallurgy: Mix metal powders such as cobalt, chromium, molybdenum and a certain amount of carbon powder evenly, then press and form, and sinter at high temperature to obtain an alloy;

Melting metallurgy: Heat and melt metals such as cobalt, chromium, molybdenum, and then add appropriate amounts of carbon and other elements to prepare an alloy;

Arc melting: Melt metal strips such as cobalt, chromium, molybdenum by arc heating, and then cool to obtain an alloy.

Stellite 6 alloy is a cobalt-based alloy with the following physical and chemical properties:

Density and hardness: The density of Stellite 6 alloy is about 8.55 g/cm³, and the hardness can reach HRC 40-50.

Melting point: The melting point of Stellite 6 alloy is about 1,310-1,390°C.

Coefficient of thermal expansion: The coefficient of thermal expansion of Stellite 6 alloy is about 13.8×10^-6/K, which is similar to that of steel.

Magnetic properties: Stellite 6 alloy is a non-magnetic material.

Corrosion resistance: Stellite 6 alloy has excellent corrosion resistance in general chemical media, such as strong acids such as hydrochloric acid and nitric acid.

Oxidation resistance: Stellite 6 alloy has good oxidation resistance in high temperature oxidizing environments.

Machinability: Stellite 6 alloy has good machinability and weldability.

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