Nickel Alloy

Alloy 602CA is an alloy with excellent high-temperature performance, and its chemical composition includes elements such as nickel, chromium, iron, aluminum, and carbon. It has excellent oxidation resistance, anti-oxidation peeling resistance, and high-temperature creep resistance, making it suitable for industrial applications in high-temperature environments. It can be used at extreme temperatures up to 2250 ° F (1232 ° C); Due to its excellent performance and supply in various forms such as plates, sheets, and round bars, RA 602 CA is increasingly being used in many harsh conditions, including radiation tubes, flame arresters with working temperatures up to 1204 ° C, furnaces for tool steel austenitization heat treatment, and other extremely high temperature applications.

Chemical composition:

MTSCO has successfully supplied it twice in the last two years. No other company in China has been able to achieve this specifification befofore.

MTSCO overcame the material's extreme susceptibility to cracking by adding multiple cold rolling passes to ensure the final product was rollable.

Performance

· Excellent high-temperature creep performance

· Excellent fatigue strength in both high cycle fatigue and low cycle fatigue modes

· Excellent antioxidant performance under high temperature and cycling conditions

The influence of different components on performance

602CA alloy combines the advantages of chromium, aluminum, and carbon, and adds zirconium, titanium, and yttrium through microalloying. The combination of these elements endows the alloy with many excellent properties.

Chromium: Chromium plays a major role in the oxidation resistance of alloys. A higher chromium content (about 25%) can combine with carbon to form Cr23C6 carbides, which improve the hardness and wear resistance of the alloy. They do not dissolve at high temperatures, thus helping to suppress grain growth, improve the high-temperature strength and creep resistance of the alloy.

Aluminum: The content of aluminum is about 2.0%, which can form a continuous layer of aluminum oxide on the surface of the alloy. This aluminum oxide layer has self-healing properties and can quickly regenerate when the surface is scratched or worn. This feature significantly improves the alloy's ability to resist oxidation, carburizing, and metal dust.

Carbon: Carbon combines with chromium in alloys to form Cr23C6 carbides, and it can also form small carbide particles (submicron scale) with titanium and zirconium. These carbide particles increase the strength and hardness of the alloy, and do not dissolve even at high temperatures, thereby improving the creep strength of the alloy.

Zirconium and titanium: These elements further enhance the high-temperature performance of the alloy by forming small carbide particles. These carbide particles help suppress grain growth, thereby improving the stability and creep resistance of the alloy at high temperatures.

Yttrium: Yttrium is an active element that can enhance the adhesion and peel resistance of oxide layers. It can make the surface aluminum oxide layer more stable and durable, further enhancing the alloy's oxidation resistance.