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Incoloy 800ht Super Alloy - China

price: contact company for price

Incoloy 800HT(UNS NO8811) Features and applications

overview: The alloy is resistant to many corrosive media. Its higher

nickel content makes it has a good resistance to stress corrosion

cracking in aqueous corrosion conditions. It has better resistance to

pitting corrosion and crevice corrosion cracking because of the high

chromium content. The alloy has good resistance to nitric acid, organic

acid corrosion, but limited corrosion resistance to sulfur acid and

hydrochloric acid. The alloy has good corrosion resistance in oxidizing

and non-oxidizing salts except slight corrosion occurs in halides. Also

it has good corrosion resistance in a mixture of water, smoke, steam,

air and carbon dioxide. The alloy is applied to the condenser nitrate,

nitric acid corrosion resistance, steam heating pipe and the heating

element tube. Incoloy800HT's similar grade:

W.Nr.1.4958(Germany)

Chemical composition, %

Nickel........................................30.0-35.0

Chromium..................................19.0-23.0

Iron.............................................39.5 max

Carbon........................................0.06-0.1

Manganese..................................1.5 max

Silicon..........................................1.0 max

Sulfur...........................................0.015 max

Copper..........................................0.75 max

Aluminium....................................0.15-0.60

Titanium........................................0.15-0.60

Physical properties:

Density, g/cm3 ............................8.0

Melting Range, °C.....................1350-1400

Thermal conductivity,

λ/(W/m•°C), at 100°C ...........11.6

Specific heat, J/kg•°C.................455

Elastic modulus, GPa................198

Electrical resistivity, μΩ•m...........0.98

Coefficient of linear expansion,

a/10-6°C-1, at 20-100°C.............14.4

Mechanical properties:(the minimum value detected at room temperature)

Tensile strength, σb/MPa................450

Yield strength, σp0.2/MPa..........180

Elongation, σ5 /%................................35

The way of heat treatment is solution treatment

Available products and specifications:

Bar: ASTM B408, AMS 5766, ASME SB408

Forging: ASTM B564, ASME SB564

Plate/Strip: ASTM B409, AMS 5871, ASME SB409

Pipe: ASTM B407, ASTM B163, ASTM B514, ASTM B515, ASME SB407, ASME SB163, ASME SB514, ASME SB515.

The metallurgical structure of Incoloy 800HT:

Incoloy 800HT is of the face-centered cubic lattice structure. Very low carbon content and improved ratio of Ti:C enhance the stability of the structure and allergy resistance as well as resistance to intergranular corrosion. The low temperature annealing around 950°C ensures the fine grain structure.

The process performance and requirements of Incoloy 800HT:

1, The alloy is suitable for both hot processing and cold processing. However, due to having a high strength, it requires high- power processing equipment.

2, The thermal processing range of the alloy is 1200°C-900°C. The cooling method is water quenching or rapid cooling 760-540°C. Thermal bending is conducted between 1000 to 1150°C.

3, Incoloy alloy 825HT has good weldability by all conventional processes, such as tungsten electrode inert gas welding, plasma arc welding, hand-sub-arc welding, metal inert gas welding, metal inert gas shielded arc welding, protective gas arc welding, and so on.

Incoloy 800ht Super Alloy

Please inquiry for your need now


Company Contact:


  • Phone: 8602169925078

  • Address: 1355#,Chengbei road, Jiading District, Shanghai, Shanghai, China

  • Email: Email


Published date: October 18, 2012 -

  • Business Description: involved in international trade import export of goods, products, and services

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