monel Hartmetallkugel has high strength, corrosion resistance, non-magnetic and other excellent mechanical properties, can be used as shaft materials for a relatively harsh geological mining conditions sulfur, high wax layer work. This product has a medium of hydrofluoric acid and fluorine gas is excellent in corrosion resistance to concentrated alkali is also excellent in corrosion resistance, but also resistance to neutral solution, water, sea water, air, organic corrosion of the product an important feature is the stress corrosion cracking is not generated. Therefore, commonly used in sewage valve, check valve, grease and other working parts of the valve and in highly corrosive environments and good sealing performance. Monel carbide ball is mainly used for the shaft and stem, scraper conveyor, oil drilling ring, the resilient member, the valve pads, etc., used in petroleum, chemical, shipbuilding, pharmaceutical, electronics sectors.
Chemical composition of the alloy Monel K500 and Monel 400 is substantially the same, the biggest difference is contained 2.3-3.15% of A1 and 0.30-1.00% Ti, organizational characteristics of this alloy in addition to a dispersion of Ni3 (A1, Ti) precipitates precipitation, the other with the same alloy Monel 400. Elements (%) Ni:> 63; Cu: 27/33; Mn < 1.5; Fe < 2; Si < 0.5; A1 2.3 / 3.15; Ti0.35 / 0.85. The alloy does not plastic - brittle transition temperature, it is very suitable for the manufacture of various cryogenic equipment, welding is able to improve the strength of the alloy, but lower ductility of the alloy. Therefore, in order to maintain a high plasticity, Monel K500 alloy welding to be carried out after the heat treatment.
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