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Incoloy 800H

Incoloy 800H

Product : Incoloy 800H

Incoloy 800H / HT is a widely used high-temperature bearing structural member of austenitic heat resistant alloy of high strength 800 H / HT is mainly due to the addition of carbon, aluminum, titanium, and annealed at a minimum temperature of 1149 ℃ in order to achieve the grain size ASTM 5 or more grades of crude.

For 800 H / HT at 787 ℃ of use, welding using 82 (ER NiCr-3) wire .RA 330-04 (N08334) wire having a thermal expansion coefficient matched, the higher the intensity maximum mechanical strength if you want to get , preferably using wire 617 (ERNiCrCoMo-1) or electrode 117 (ENiCrCoMo-1).

Incoloy 800H Nickel base alloy Chemical Composition

 

Cr

Ni

Mn

Si

Al

Ti

Al + Ti

C

Cu

P

S

Fe

Min

19.0

30.0

--

--

0.15

0.15

0.85

0.06

--

--

--

--

Max

23.0

35.0

1.5

1.0

0.6

0.6

1.2

0.1

0.75

0.045

0.015

39.5

Melting range : 2475- 2525°F

Temperature , °F

70

1400

1600

1800

Coefficient of thermal expansion *, in/in°F x 10-6

--

9.9

10.2

--

Thermal Conductivity ,

Btu · ft/ft2 · hr · °F

6.7

13.8

15.1

17.8

Elastic Modulus,

psi x 10 6

28.5

21.1

19.2

--

Incoloy 800H Nickel base alloy Mechanical properties

Alloy

Tensile strength

Rm N/mm2

Yield Strength

RP0.2N/mm2

Elongation

A5 %

800

500

210

35

800H

450

180

35

Incoloy 800H Nickel base alloy Metallurgical structure :
800H for the face-centered cubic lattice structure. Very low carbon content and improving the Ti: C ratio increases the stability and structure of the largest anti-allergy activity and resistance to intergranular corrosion. Low temperature annealing around 950 ℃ guaranteed fine grain structure.

Incoloy 800H Nickel base alloy Corrosion :
Many corrosive media capability 800H corrosion. Its high nickel content in aqueous corrosion conditions has good resistance to stress corrosion cracking. High chromium content so that it has better resistance to pitting and crevice corrosion cracking.

Incoloy 800H Nickel base alloy Application field have :
1. Condenser nitrate - nitric acid corrosion resistance
2 . Steam heating pipes - very good mechanical properties
3 . The heating element tube - very good mechanical properties

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