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UNS N08810 / UNS N08811 - Incoloy 800 H is an iron-nickel-chromium alloy having the same basic composition as Incoloy 800, with significantly higher creep rupture strength. The higher strength results from close control of carbon, aluminum and titanium contents in conjunction with a high temp anneal. The 800H modification was to control carbon (0.05 to 0.10%) and grain size to ›ASTM 5) to optimize stress rupture properties. Incoloy 800 H has further modifications to the combined titanium and aluminum levels (0.85 to 1.2%) to ensure optimum high temperature properties.
The alloy is dual certified and combines the properties of both forms. The chemical balance allows the alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. 800HT will not become embrittled even after long periods of usage in the 1200-1600 deg F range where many stainless steels become brittle.
Super-heaters and re-heater tubing
Reformer outlet pigtails and manifolds
Heat exchangers
Pressure vessels
Dampers
Industrial furnaces
A nickel-iron-chromium grade with progress of molybdenum and copper, alloy 825 has mind blowing use resistance.Alloy 825 is a high performing nickel-iron-chromium Alloye with increments of molybdenum, copper, and titanium. The nickel content is OK for insurance from chloride-molecule stress-use breaking. The nickel in Alloy 825, related with the molybdenum and copper, gives extraordinary security from diminishing circumstances like those containing sulphuric and phosphoric acids. The molybdenum baffles affirmation from pitting and opening disintegrating. The Alloye's chromium content gives security from a mix of oxidizing substances like nitric horrible, nitrates and oxidizing salt.
Fuel element dissolvers
Sea-water-cooled heat exchangers; offshore product piping systems; tubes and components in sour gas service
Heat exchangers, evaporators, scrubbers, dip pipes etc. in phosphoric acid production
Air-cooled heat exchangers in petroleum refineries
Chemical and Food Processing
Excellent cold forming characteristics typically associated with the nickel-chromiun alloys are exhibited with 800HT. When cold formed extensively the grain size produc a visibly undulated surface called "orange peel". 800HT can be welded by the comm techniques used on stainless steels. Typical applications for the alloy include ethyler pyrolysis, hydrocarbon cracking, cracking furnaces for vinyl chloride, diphenol and acetic acid. The alloy is also used for valves, fittings and other components exposed corrosive attack from 1100 to 1800 deg F. Round bar ranging from 3/4" to 6" diameter, and light gauge sheet and plate. Incoloy 800 H material can be supplied in random lengths, cut to order or machined to customer requirements. Machining includes drill ing, threading, milling, CNC shapes, turning, tapping, flanges and others.
Super-heaters and re-heater tubing
Reformer outlet pigtails and manifolds
Pressure vessels
Dampers
Industrial furnaces
Heat exchangers
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