DIN 17658 G-CuNi30 M: Premium Corrosion-Resistant Copper–Nickel Alloy

G-CuNi30 possesses a very good corrosion resistance to all kinds of water, like drinking water, river waters, brackish water, mining water, sea water, sour and ammonic condensates as well as not-oxidizing acids, alkaline solutions and salt solutions, organic acids and dry gases, like oxygen, chlorine, hydrogen chloride, hydrogen fluoride, sulfur dioxide, carbon dioxide. The material does not possess sensitivity to stress corrosion and is well erosion and cavitation-steadily. The corrosion resistance is better due to the higher Ni-content than with the material G-CuNi10 (2.0815). The mechanical properties as well as the values for the heat resistance are more highly than with the G-CuNi10 (2.0815) with only approx.. 10 % Ni. Manufacturing properties: - casting bar: well - cutting property: caused - soft soldering: very well - braze welding: very well - gas fusion welding: badly - metal arc welding: very well - gas-schielded arc welding: very well - resistance welding: very well - polishing bar (mechanical.): well Application: The material is used in shipbuilding, building of paper-making machines, in the food and Geraenke industry, in power stations and in the chemical industry for fittings, armatures, pumps, measuring instruments, agitators, filling up organs etc..

Properties

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Technological properties