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Incoloy Alloy 800

Incoloy Alloy 800
Product Details

Incoloy 800/800H/800HT(UNS N08800/ UNS N08810/ UNS N08811)



Chemical Composition Wt.%

%

Ni

Cr

Fe

C

Mn

Si

Cu

S

Al

Ti


800

Min

30

19

0.15

0.15

Max

35

23

bal

0.10

1.5

1

0.75

0.015

0.60

0.60


800H

Min

30

19

0.05

0.15

0.15

Max

35

23

bal

0.1

1.5

1

0.75

0.015

0.6

0.60


800HT

Min

30

19

0.06

0.15

0.15

Max

35

23

bal

0.10

1.5

1

0.75

0.015

0.60

0.60

aluminum +titanium for 0.85—1.20

Physical
Constants

Density.g/cm³

8.0 g/cm³

Melting Range

1350-1400 ℃

The minimum mechanical properties of the alloy at room temperature

alloy


Typical mechanical properties

tensile strength
Rm N/mm2

Yield Strength
RP0.2N/mm2

Elongation
A5 %

800

500

210

35

800H

450

180

35


Characters

1. Excellent corrosion resistance in very hot aqueous media up to 500℃
2. Good resistance to stress corrosion properties
3. very good processability


Microstr ycture

800H for the face-centered cubic lattice structure. The extremely low carbon content and increased Ti: C ratio increase structural stability and maximum sensitization as well as intergranular corrosion resistance. Low temperature annealing around 950 ℃ to ensure fine grain structure.

Applications

1. Nitric acid condenser - -resistant to nitric acid corrosion
2. Steam heating tube - -good mechanical properties
3. Heating element tube - -very good mechanical properties
For applications up to 500 ℃, the alloy is annealed.

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