What is the difference between nickel-based alloy materials and stainless steel?
1. Different definitions
Nickel-based alloy is a
Special Stainless Steel, a high-alloy steel containing high nickel, high chromium, and high molybdenum.
Stainless steel is the abbreviation for stainless steel and acid-resistant steel. Steel that is resistant to weakly corrosive media (such as air, steam, and water) or has anti-rust properties is called stainless steel.
2. High performance
Nickel-based alloys have good local corrosion resistance. They have good pitting corrosion resistance and stress corrosion resistance under conditions of seawater, aeration, cracks and low-speed erosion. It is a substitute for nickel-based alloys and titanium alloys. At the same time, it has better high temperature resistance or corrosion resistance. In this regard, stainless steel is almost the best.
3. Different categories
The phase structure of nickel-based alloys is a stable austenitic metallurgical structure.
According to the state of organization, stainless steel is usually divided into martensitic steel, ferritic steel, austenitic steel, austenitic-ferritic (duplex) stainless steel and precipitation hardening stainless steel.
Extended Information
Precision alloys, including nickel-based soft magnetic alloys, nickel-based precision resistance alloys, and nickel-based electric heating alloys. The most commonly used soft magnetic alloy is Permalloy with a nickel content of approximately 80%. Its maximum permeability and initial permeability are high, and its coercivity is low. It is an important core material in the electronics industry.
The main alloying elements of nickel-based precision resistance alloys are chromium, aluminum and copper. The alloy has high resistivity, low temperature coefficient of resistivity, and good corrosion resistance, and is used to manufacture resistors. Nickel-based electric heating alloy is a nickel alloy with a chromium content of 20%. It has good oxidation resistance and corrosion resistance and can be used for a long time at a temperature of 1000 to 1100 ℃.
