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Good Corrosion Resistance Incoloy 825 Tube UNS N08825 / 2.4858 Seamless Pipe ASTM B423 For Heat Exch
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Good Corrosion Resistance Incoloy 825 Tube UNS N08825 / 2.4858 Seamless Pipe ASTM B423 For Heat Exch

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Incoloy 825 / UNS N08825 / 2.4858 Nickel Alloy Seamless Pipe ASTM B423

 

 

1. Grade: Incoloy 825

 

2. Process: VIR - VAR - ESR - Forging - Cold Rolling / Cold Drawing - Semifinished - Finished

 

3. Delivery Condition: Solution Annealed

 

4. Surface Condition: AP, BA, Polished

 

5. OD: 6-325mm

 

6. WT: 0.5-25mm

 

7. Length: Max. 25 meters

 

8. Specification: ASTM, ASME, GB, JIS, GOST, DIN, etc.

 

9. Packing: Plywood case, Bundle

 

 

Characteristics

 

Incoloy 825 Alloy is a titanium-stabilized fully austenitic Ni-Fe-Cr alloy with additions of Cu + Mo

  • good resistance to stress-corrosion cracking
  • satisfactory resistance to pitting and crevice corrosion
  • good resistance to oxidizing and non-oxidizing hot acids
  • good mechanical properties at both room and elevated temperatures, up to approximately 550 
  • approval for pressure vessels with wall temperatures up to 450 

 

Density: 8.14 g/cm³

 

 

Corrosion resistance

 

Incoloy 825 Alloy is a versatile general engineering alloy with resistance to corrosion in acids and alkalis under both oxidizing and reducing conditions. High nickel content gives the alloy virtual immunity to stress corrosion cracking.
 

Incoloy 825 Alloy is good in media as diverse as sulphuric, sulphurous, phosphoric, nitric and organic acids, alkalis such as sodium or potassium hydroxide, and acidic chloride solutions.
The versatility of Alloy 825 is illustrated by its use in nuclear fuel element dissolvers where a variety of corrosive media, e. g. sulphuric and nitric acids and sodium hydroxide, are handled in the same equipment.

 

 

Applications

 

Incoloy 825 Alloy is used in a wide variety of applications up to a temperature of approximately 550 .

Typical applications are:

  • components such as heating coils, tanks, crates, baskets and chains in sulphuric acid pickling plants
  • fuel element dissolvers
  • sea-water-cooled heat exchangers, offshore product piping systems; tubes and components in sour gas service
  • heat exchangers, evaporators, scrubbers, dip pipes etc. in phosphoric acid production
  • air-cooled heat exchangers in petroleum refineries
  • food processing
  • chemical plant
  • combustion-resistant alloy for high pressure O2 applications

 

Chemical composition

 

 

Ni

Cr

Fe

C

Mn

Si

Cu

Mo

Al

Ti

P

S

min(%)

38.0

19.5

bal.

 

 

 

1.5

2.5

 

0.6

 

 

max(%)

46.0

23.5

0.05

1.0

0.5

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Mr. Jack Cao
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Shanghai Kangsheng Superalloy Co., Ltd.
853 Zhuyao Road, Jiading Industrial Zone, Shanghai, China (Mainland)
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