4J42 corresponding grade:4J342, NI42 (China), UNS K94100, INVAR42, NIROMEI42, FEROVAL42NI, Glass Sealing42 (USA), Wnr. 1.3917, Vacodil42, Wakogir 42, Nickel-Ayilu 42 (Germany), Nilo42, NS42 (UK), YEF42, DF (Japan), FEN42, N42, N42TI (France, H (Russia), FENTI42 (International ISO).
4j42Technical standard: YB T 5235-2005, ASTM F30
4j42Form of supply: strip, plate, wire, tube, flat bar, bar.
4J42 is a low-expansion iron-nickel alloy, also known as 4J42 alloy or low-expansion alloy. It consists of about 42% nickel, 57% iron, and a small amount of silicon. This alloy has a very low coefficient of thermal expansion and is able to maintain stability in the face of temperature changes. Therefore, 4J42 alloy is widely used in high-precision instruments, precision instruments, optical equipment and astronomical instruments. It also has good corrosion resistance and can also be used in some special environments.
The chemical composition of 4J42 alloy mainly includes:
1. Nickel (Ni): about 42% of the total mass of the alloy.
2. Iron (Fe): about 57% of the total mass of the alloy.
3. Silicon (Si): A small amount of elements present in the alloy, and the specific content may be 01% or less.
The ratio of these chemistries can be fine-tuned to meet the needs of specific applications based on specific manufacturing requirements. Please note that this is only a typical chemical composition of alloy 4J42 and the composition of the actual product may vary.
4J42 alloy has the following physical properties:
1. Density: about 81 gram cubic centimeter.
2. Coefficient of thermal expansion: in the range of room temperature to 100 degrees Celsius, the coefficient of linear expansion is about 55 x 10 -6 degrees Celsius.
3. Melting point: about 1420-1460 degrees Celsius.
4. Strength: 4J42 alloy has good strength and can withstand certain mechanical stress.
5. Hardness: The hardness depends on the specific treatment state and heat treatment process.
6. Magnetism: 4J42 alloy is a ferromagnetic material with high permeability.
These physical properties make 4J42 alloy have good stability and corrosion resistance in high-temperature environments, so it is widely used in aerospace, energy and chemical industries. However, it is important to note that the specific physical properties may vary depending on the manufacturing process, heat treatment, and alloy state.
Alloy 4J42, also known as a low thermal expansion alloy, is an iron-nickel-cobalt alloy. It has the following features:
1. Low coefficient of thermal expansion: 4J42 alloy has a very low coefficient of thermal expansion, which means that it can maintain a relatively stable size when the temperature changes. This makes it very suitable for applications in high-temperature environments, as it reduces deformation and stress due to thermal expansion.
2. Good corrosion resistance: 4J42 alloy has good corrosion resistance and can resist the erosion of most acids, alkalis and salt solutions. This makes it more reliable for use in some corrosive environments.
3. High temperature stability: Due to the special design of its chemical composition, 4J42 alloy has good high temperature stability. It can maintain good mechanical properties and structural stability at high temperatures, and is not easy to deform or crack.
4. Good processing performance: 4J42 alloy has good machinability, and can be formed, cut and welded through various processing techniques. This makes it even more convenient when manufacturing critical components in high-temperature areas.
All in all, 4J42 alloy is an iron-nickel-cobalt alloy with low coefficient of thermal expansion and good corrosion resistance, which is suitable for the manufacture of key components in high-temperature environments.
Product Specifications:
More form specifications, negotiable**, support non-standard customization.