Incoloy 825 Austenitic Nickel Iron Chromium Alloy - China
price: contact company for price
Incoloy825(UNS NO8825)austenitic nickel-iron-chromium
alloy Features and applications overview: Incoloy825 is an common
engineering alloy with resistance to acid and alkali metal corrosion
under oxidization and reduction environment.
High nickel content of the
alloy ensures an effective resistance to stress-corrosion cracking.
The
alloy has good corrosion resistance in various media, such as sulfur
acid, phosphoric acid, nitric acid and organic acids, alkali metals such
as sodium hydroxide, potassium hydroxide and hydrochloric acid solution.
The comprehensive performance of the alloy is showed in the nuclear
burning dissolver in which there are various corrosive media, for
example sulfuric acid, nitric acid and sodium hydroxide are dealt in the
same device.
Incoloy825 is applied in various industrial fields as the
using temperature does not exceed 550°C, for example, the heating tubes,
containers, baskets and chains of sulfur acid picking plant, seawater-
cooled heat exchanger, marine products pipeline system, acidic gas
environment pipe, the heat exchanger, evaporator, washing pipe and
snorkel pipe used in the production of phosphoric acid, air heat
exchanger in the oil refining, flame retardant alloy used in food
engineering, chemical process, high-pressure oxygen.
Incoloy825's
similar grades: NS142(China), NC21FeDu (France), W.
Nr.
2.4858
NiCr21Mo (Germany) NA16 (England) Chemical composition, %: Nickel.
.
38.0 -
46.0 Chromium.
.
19.5-23 - 0
Iron.
.
.
balance.
Molybdenum.
.
2.5-
3.5 Carbon.
.
0.02 5 max
Manganese.
.
1.0 max
Silicon.
.
.
0.5 max
Sulfur.
.
.
0.01 max
Phosphorus.
.
0 - 02 max Copper.
.
1 - 5-
3.0 Aluminium.
.
0.2 max Titanium.
.
0 - 6-
1.2 Physical properties: Density, g/cm3 .
.
8.1
Melting Range, °C.
1370-1400 Thermal conductivity,
λ/(W/m•°C), at 100°C .
10.8 Specific heat,
J/kg•°C.
.
440 Elastic modulus,
GPa.
.
195 Electrical resistivity,
μΩ•m.
.
1.37 Coefficient of linear expansion,
a/10-6°C-1, at 20-100°C.
14.1
Mechanical properties: (the minimum value detected at room temperature)
Tensile strength, σb/MPa.
550
Yield strength, σp0.2/MPa.
250
Elongation, σ5 /%.
.
35
Brinell hardness, HBS.
.
≥200
The way of heat treatment is solution treatment
Available products and specifications:
Bar: ASTN B425, ASME SB425
Plate/Strip: ASTM B424, ASME SB424
Pipe: ASTM B423, ASTM B163, ASTM B704, ASTM B705, ASME SB423, ASME SB163.
The metallurgical structure of Incoloy 825:
Incoloy alloy 825 has a stable face-centered cubic lattice structure.
The chemical compositions and appropriate thermal treatment ensure the corrosion resistance is not weakened by alloy's sensitization.
The process performance and requirements of Incoloy 825:
1, If there are sulfur, phosphorus, lead or other low melting point metal while heating, Nicrofer 6023/6023H alloy will become brittle.
These impurities come from the marking paint, chalk, lubricants, water, fuel, etc.
The sulfur content of the fuel should be low, for example, the sulfur content in liquefied gas and natural gas should be ideally less than 0.1%g/m3, in city gas less than 0.25g/m3 , in liquefied petroleum gas less than 0.5g/m3.
2, The hot-working range for Incoloy alloy 825 is 900 to 1150°C.
The cooling method is water cooling or rapid air cooling.
3, Tungsten electrode inert gas welding, plasma arc welding, handmade sub-arc welding, metal inert gas welding and shielded metal-arc welding are all can be used.
The pulsed arc welding is the preferred solution.
Incoloy 825 Austenitic Nickel Iron Chromium Alloy
Please inquiry for your need now
Company Contact:
- Posted By: Shanghai Kangsheng Superalloy Co., Ltd
- Phone: 8602169925078
- Address: 1355#,Chengbei road, Jiading District, Shanghai, Shanghai , China
- Email:
Published date: October 18, 2012
- Business Description: involved in international trade import export of goods, products, and services
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