UNS N08800 steel

N08800 is primarily used in applications with temperatures up to 1100° F, where alloys 800H and 800HT are normally used in temperatures above 1100° F where resistance to creep and rupture is required. The chemical balance allows the nickel steel alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. Incoloy 800HT will not become embrittled even after long periods of usage in the 1200-1600° F range where many stainless steels become brittle. Excellent cold forming characteristics typically associated with the nickel-chromium alloys are exhibited with 800HT. When cold formed extensively the grain size produces a visibly undulated surface called "orange peel". Incoloy 800HT can be welded by the common techniques used on stainless steels.

UNS N08800 (Alloy 800) Chemical Composition :

Ni	Fe	Cr	Cu	Ti	Al	C	Mn	S	Si
30.0-35.0	39.5	19.0-23.0	0.75	0.15-0.60	0.15-0.60	0.1	1.5	0.015	1.0

UNS N08800 (Alloy 800) Mechanical Properties :

Product	Tensile(ksi)	0.2%Yield(ksi)	Elongation(%)
Rod & Bar	75-100	30-60	60-30

UNS N08800 (Alloy 800) Application
1 . Ethylene furnace quench boilers
2 . Hydrocarbon cracking
3 . Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
4 . Industrial furnaces
5 . Heat-treating equipment
6 . Chemical and petrochemical processing
7 . Super-heater and re-heaters in power plants
8 . Pressure vessels
9 . Heat exchangers

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