HN65MW sheet, strip, plate, foil
Metal constructions and details are forced of working in the most severe conditions in modern industries. They are exposed to influences of aggressive gasses, temperatures, solutions. They can resist significant mechanical loads. Sheets made of a stainless Hastelloy can be exploited for a long time under heavy loads in aggressive environment at a working temperature 800ºС.
Percentage composition GOST 5632−72
Hastelloy mill-products can be treated with any type of processing. It possesses a resistance in oxidizing atmosphere, in environment of ammonia, nitrogen. Its surface does not oxidize for long-time working in high-temperature environment. Lineal expansion coefficient = 13,7 (1/deg. К). A density = 8,9 g/cm³. Mechanical properties of wire depend on a temperature. Load resistance will be the highest up to a temperature of 800ºС. Heat conduction coefficient in a temperature range 20 — 100ºС = 0,126 • 10² V/(m • К).
It is manufactured with a help of electric-arc and argon-arc welding. Hastelloy wire in the form of filler material is used for argon-arc welding. OZL-21 electrodes are used for electric-arc welding. Welding joints are resistant to intercrystalline corrosion and crack formation.
Thermohardening is done at a temperature of 1000 — 1200ºС with further cooling in water or in the air. Such heat treatment conduces to normalization of inherent stress and to increasing of strength characteristics of a sheet.
Due to corrosive resistance, high strength, heat-resistance, sheets of Hastelloy grade find wide and various application. There are a lot of goods that can be made of this alloy: sheet details, welded pressure relief pipes of high-temperature installations. It is also used in petrochemical mechanical engineering, in manufacture of ammonia. Sheets of Hastelloy grade are widely used for manufacturing constructions, details that are intended to have a large mechanical assurance coefficient and be durably and reliably exploited at a temperature of 700−850ºС. Working sheet qualities allow using all modern technologies of metal working: grinding, cutting, burnishing. A wide size range of producible sheets can simplify a choice of the most appropriate stock material for detail.
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