Supply of Incoloy 825 alloy is corrosion-resistant alloys commonly

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Incoloy 825 specifications

Incoloy 825 alloy is commonly used corrosion-resistant alloy

825 alloy is a common corrosion resistant alloys, the oxidation and reduction environment has corrosion acid and alkali metal alloys with high nickel content to make effective anti-stress corrosion cracking.

825 alloy in a variety of media are very good corrosion resistance, such as sulfuric acid, phosphoric acid, nitric acid and organic acids, alkali metals such as sodium hydroxide, potassium hydroxide and hydrochloric acid solution. Integrated high performance in a variety of nuclear burning corrosive media dissolver, such as sulfuric acid, nitric acid and sodium hydroxide were processed in the same device.

Incoloy825 similar grades

United States: UNS N08825

Germany: W.Nr.2.4858

France: NC21FeDu

Applications

" sulfuric acid plant with heating pipes, containers, chain.

" water cooled heat exchangers, marine products pipeline system, acid gas environment pipeline.

" Phosphoric Acid heat exchanger, evaporator, washing, dipping tubes.

" Oil refining in the air heat exchanger

" Chemical, Food Engineering

" nuclear power industry

" the application of high pressure oxygen flame retardant alloy

Incoloy825 specifications

Pipe, rod, sheet, strip, forging supply consultation

Incoloy825 technical standards

Forged bars: ASTM B425
Forgings: ASTM B425

Seamless: ASTM B423

Welded pipe: ASTM B163 ASTMB704
ASTM B705

Sheet: ASTM B424

Strip: ASTM B424

Incoloy825 material properties

" Good resistance to stress corrosion cracking

" good resistance to pitting and crevice corrosion

" good oxidation resistance and non-oxidizing acidic thermal energy

" up to 550 ¡æ at room temperature and the high temperature mechanical properties are of great
Incoloy825 chemical composition
Typical values (Weight%)

Cr
Ni
Mo
C
Mn
P
S
Si
Fe

¡Ü

19.5-23.5
38.0-

46.0
2.50

-3.50
0. 05
1.00
0.03
0.03
0.50
I

Incoloy825 mechanical properties (room temperature)

Variety
RP0.2N/mm2
RP1.0N/mm2
RmN/mm2
A50%

Strip, Sheet,
240
265
585
30

Plates 100-240
220
250
550
35

Pipe 64-240
180
-
530
30

Incoloy825 physical properties

Density: 8.1 g/cm3

Melting Point :1370-1400 ¡æ

Linear expansion coefficient :15.37-20 .49/10-6 ¡æ -1

Hardness :135-160 (HB)

Incoloy825 processing

Thermal processing

1, the appropriate thermal processing temperature of 1150-900 ¡æ, cooling can be water quenched or rapidly cooled;

2, thermal processing, the workpiece can be directly sent to the temperature of the stove had been. The stove to warm, the material thickness of the holding time is 60 minutes per 100mm. Insulation to the baked immediately after the time specified, the specified temperature range processing. If the temperature metal processing temperature to minimize the following, should be re-heated;

3, thermal annealing time after processing to ensure optimum corrosion resistance and for the crystal structure.

Cold

1, cold working after solution treatment should be carried out, stainless steel work-hardening rate and close, because

The processing equipment should be adjusted accordingly.

2, in the cold when a large amount of intermediate annealing process. When the final cold deformation greater than 15% of the processing needed to ultimately stabilize.

Incoloy825 welding

1, there should be nickel-based alloys and nickel-chromium steel of special tools;

2, suitable for any conventional welding process with the same kind of material or other metal welding, pulsed arc welding which is the preferred solution;

3, weld must be annealed to make stainless steel wire brush to clean dirt, dust and marks;

4 HAZ generated color to the welding zone without cooling, stainless steel brush to;

5, no need for heat treatment after welding.

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