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Incoloy 800HT

Incoloy 800HT can be machined using conventional machining methods which are used for iron based alloys. Incoloy 800HT 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.
Availability:

Chemical Composition:

Grade

%

Ni

Cr

C

Mn

Fe

Incoloy800HT

Min

30

19

0.05


Rest

Max

35

23

0.1

1.5

Si

Cu

S

Al

Ti

P




0.15

0.15


1

0.75

0.015

0.6

0.6

0.03


Standard of execution:

Form

                    ASTM

Rod

                    B 574

Plate, sheet and strip

                    B 575

Seamless pipe and tube

                    B 622

Welded pipe

                    B 619, B 775

Welded tube

                    B 626, B 751

Welding fitting

                    B 366

Forged or rolled pipe flange and forged fitting

                    B 462

Billet and bar for reforging

                    B 472

Forging

                    B 564


Characteristic as below:
Excellent corrosion resistance in the high temperature at 500°C in the water medium.
Good stress corrosion resistance property.
Excellent machining

Metallurgical structure:
Incoloy 800HT  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°C ensure the fine grain structure.

Application field of Incoloy 800HT:
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°C enviornment, alloy supply state change to annealing.


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