What nickel-based materials are n08810 and no8120?
N08810/No8810 high carbon alloy has a carbon content between 0.05 and 0.10. It is mainly used at temperatures above 600 degrees. It has the characteristics of coarse grains, high creep strength, good mechanical properties and corrosion resistance. Superheaters, reheaters, high-temperature heating, conversion and cracking furnace tubes in chemical industry, electric power, and petrochemical industry.
N08810/No8810 chemical composition: Carbon C: 0.05~0.10, Silicon Si: ≤1.0, Manganese Mn: ≤1.50, Chromium Cr: 19~23, Nickel Ni: 30.0~35.0, Aluminum Al: ≤0.15~0.6, Titanium Ti: ≤ 0.15~0.6 Iron Fe: 0.05~ balance, Copper Cu: ≤0.75, Phosphorus P: ≤0.030, Sulfur S: ≤0.015. You have also seen the composition list of this alloy.
There are also differences in the names of N08810/No8810: national standard: NS1102, NS112, 0Cr21Ni32AlTi, American standard: N08810/No8810, No8810, German standard: 1.4958, X5NiCrAlTi31-20.
N08810/No8810 corrosion resistance: The alloy has good resistance to corrosion by HNO3, organic acids, oxidizing and non-oxidizing salts except halogen salts. Especially resistant to high temperature corrosion, it has good resistance to carburization. Intergranular corrosion will occur when the alloy is heated between 593 and 816, and it has good resistance to stress corrosion. However, long-term aging at 650 degrees may significantly reduce the stress corrosion sensitivity of the alloy. In NaOH, NACL stress resistance depends on concentration and level. It has good resistance to stress corrosion cracking in water chloride, corrosion resistance to steam, air and carbon dioxide mixtures, and good corrosion resistance to organic acids such as HNO3, HCOOH, CH3COOH, propionic acid, etc., but After heating, it will cause sensitization and intergranular corrosion. It can only resist the corrosion of low concentrations of sulfur and HCl. It has good corrosion resistance to organic acids and good corrosion resistance to flowing seawater. However, sediments will form on the surface in stagnant seawater. And cause serious corrosion cracks.
N08810/No8810 processing and welding: The hot processing performance is good, the hot processing temperature is 900~1200 degrees, and the hot bending forming temperature is 1000~1150 degrees. In order to reduce the intergranular corrosion tendency of the alloy, it should be passed through the 540~760 degree sensitization zone as quickly as possible. Intermediate softening annealing is required during cold working. The heat treatment temperature is 920~980. The solid solution temperature is 1150~1205. The welding performance is good and the conventional welding method is used.
N08810/No8810 physical properties: density 8.0g/cm3, melting point: 1350~1400 ℃, specific heat capacity: 500J/kg.K, resistivity: 0.93, elastic modulus: 200 MPa.
N08810/No8810 application fields: superheaters, reheaters, high-temperature heating, conversion cracking furnace tubes, etc. in the chemical, electric power, and petrochemical industries.
