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Incoloy 800H

Material: Incoloy 800H, Alloy 800H, N08810, 1.4958, 1.4876
Type: Pipes
          Plates
          Bars
          Fittings
          Forgings
          Flanges
          Prefabrication
Availability:
Incoloy 800H Features:

It remains ductile during long term use at temperatures below 1290°F (700°C) due to a maximum titanium and aluminum content of 0.7%. Alloy 800 with a standard anneal is recommended for service below 1100°F (600°C). Alloy 800H resists reducing, oxidizing and nitriding atmospheres, as well as, atmospheres that alternate between reducing and oxidizing. The alloy remains stable in long term high temperature service.


Alloy 800H has the following roperties:

1. Excellent corrosion resistance in extremely high temperature aqueous media up to 500°C

2. Good resistance to stress corrosion

3. Good workability


Metallographic structure of Incoloy 800H:

800H is a face-centered cubic lattice structure. Very low carbon content and increased Ti:C ratio increase structural stability and maximum resistance to sensitization and intergranular corrosion. A low-temperature annealing around 950°C ensures a fine-grained structure.


Corrosion resistance of Incoloy 800H:

800H can resist corrosion of many corrosive media. Its high nickel content makes it resistant to stress corrosion cracking in aqueous corrosion conditions. The high chromium content provides better resistance to pitting and crevice corrosion cracking. The alloy has good corrosion resistance to nitric acid and organic acids, but limited corrosion resistance in sulfuric acid and hydrochloric acid. Good corrosion resistance in oxidizing and non-oxidizing salts, in addition to the potential for pitting corrosion in halides. It also has good corrosion resistance in water, steam and mixtures of steam, air and carbon dioxide.


The Chemical Composition of Incoloy 800H, %

Grade

Ni

Cr

Fe≤

Al

C

Mn

P≤

Si≤

S≤

Al & Ti

Cu≤

Incoloy 800H

30.0-35.0

19.0-23.0

39.5

0.15-0.60

0.05-0.10

1.5

0.045

1.00

0.015

0.30-1.20

0.75


Physical Properties of Incoloy 800H

Density: 8.0 g/cm3

Melting point: 1350-1400 ℃


Incoloy 800H Mechanical Properties

Mechanical properties

Tensile, min, ksi[MPa]

Yield, min, ksi[MPa]

Elongation, %(min)

Incoloy 800H

65[450]

25[170]

30


Incoloy 800H Equivalent Grades

STANDARD

WERKSTOFFNR.

UNS

JIS

BS

GOST

AFNOR

EN

OR

Incoloy 800H

1.4958 / 1.4876

N08810

NCF 800H

NA 15(H)

ЭИ670

Z8NC33-21

X5NiCrAlTi31-20

XH32T


Incoloy 800H ASTM Specifications

Product From

Rod and Bar

Plate, Sheet & Strip

Seamless Pipe & Tube

Welded fittings

Forging

Standard

ASTM B408, EN 10095

ASTM A240/ A480/B409/ B906

ASTM B829/ B407

ASTM B366

ASTM B564/DIN 17460


Incoloy 800H Application:

  • Chemical and Petrochemical Processing—process equipment for theproduction of ethylene, ethylene dichloride, acetic anhydride, ketene,nitric acid and oxy-alcohol

  • Petroleum Refining—steam/hydrocarbon reformers andhydrodealkylation units

  • Power Generation—steam super-heaters and high temperature heatexchangers in gas-cooled nuclear reactors, heat exchangers andpiping systems in coal-fired power plants

  • Thermal Processing Fixtures—radiant tubes, muffles, retorts andfixtures for heat-treating furnaces


JN Alloy Products


JN Alloy is a distributor and product manufacturer of stainless steel, duplex steel, and nickel.
Tel: +86 19339900211
Add: Stainless steel Market 289, Xinwu District , Wuxi, China
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