About
Hite Special Alloy is a high-tech enterprise, mainly engaged in the production of Hastelloy, Monel, Inconel, nickel and other high-temperature alloys.
Invar alloy material lines are extensively researched, developed, and used in South Korea, the United States, and Europe. Products made of invar alloy materials can operate at a long-term temperature of 75 to 90 ℃, typically set at 80 ℃. The long-term continuous working temperature of invar alloy can reach 230 ℃, and the short-term maximum temperature can reach 290 ℃. It is precisely these characteristics of invar alloy properties that make invar alloy materials widely used in various market areas. What are the performance characteristics of invar alloys (invar 36/4j36, 4j32, 4j33)?
Performance characteristics of invar alloy materials
1. Invar alloy has a small expansion coefficient. Invar alloy materials are also called non expanding steel, and their average expansion coefficient is generally 1.5 × 10-6/℃, and relatively stable at room temperature of - 80 ℃ to 230 ℃.
2. The strength and hardness of invar alloy are not high. The carbon content of invar alloy material is less than 0.05%, and the hardness and strength are not high. The tensile strength is about 590Mpa, the yield strength is about 410Mpa, and the Vickers hardness is about 160. However, the wire strength of the invar alloy material required for the spare capacity conductor core is above 1000 Mpa, which can be improved through alloy strengthening, fine grain strengthening, precipitation strengthening, and cold deformation, while still having good plasticity while improving the strength.
3. The thermal conductivity of invar alloy is low, and the thermal conductivity of invar alloy materials is 0.026 to 0.032 cal/cm • sec • ℃, which is only 1/3 to 1/4 of the thermal conductivity of 45 steel.
4. Invar alloy has high plasticity and toughness, and the elongation of Invar alloy material δ= 30-45%, shrinkage δ= 50~70%, impact toughness AK=130-310J/cm2.
Application field of Invar alloy materials
Invar alloy materials are widely used in various fields, such as measuring tools, precision instruments, large telescopes, color picture tube shadow masks, and core wires for long-distance power cables, glass sealing materials, ultra-thin Invar alloy material plates, thermostats, optical measurement systems, and waveguides, LNG ship cargo tanks, LNG ship Invar components, pump towers, power electronics, aerospace components, ship components, and so on.
Regarding invar 36/4j36, invar 4j32, invar 4j33 »
