Nickel Alloy Incoloy 800HT UNS N08811

HY 800HT

Material grades and equivalents

Incoloy 800HT/ UNS N08811/W.Nr.1.4959 X 8 NiCrAlTi 32-21/BS NA 15 (HT)

Incoloy 800H Chemical composition:

Incoloy 800H Physical properties

Incoloy 800H Alloy minimum mechanical properties in the room temperature

800H Characteristic as below:
1.Excellent corrosion resistance in the water media of the extremely high temperature of 500℃.
2.Good stress corrosion resistance
3.Good machining

HY 800HTMetallurgical structure:
800H is face-centered cubic lattice structure. very low carbon centent and increased Ti:C rate
improve the stability of the structure, anti-allergy , and anti-intergranular corrosion. Low temperature annealing of 950℃ ensure the fine grain structure.

HY 800HTCorrosion resistance:
800H can not be corroded in many kinds of media. Its high nickel content made it have good stress corrosion resistance cracking property in the water corrosion condition.High Chromium content made it can better resist pitting and crevice corrosion cracking. This alloy can resist nitric acid and organic acid corrosion, but it is not so fine in the sulfuric acid and hydrochloric acid.
800H not only good corrosion resistance in both oxidation and non-oxidizing salt, maybe a little pitting in halide, but also very good corrosion resistance property in the mixture of water,smoke, steam,air and carbon dioxide.

HY 800HTApplication range and field：
1.Nitrate condenser—Corrosion resistance of nitrc acid
2.Steam heating pipes–Very good mechanical property
3.Heat up element tube–Very good mechanical property

For the application of up to 500℃ enviornment, alloy supply state change to annealing.

Specifications：