Inconel 825 Flat

Inconel 825 is a nickel, chromium and iron alloy with additions of molybdenum, copper and titanium which gives exceptional resistance to many corrosive environments.  Titanium oxide is formed in Inconel 825 & it provides resistance to localized attacks like pitting & crevice corrosion.

Chemical Properties

GRADE

 

Cr

Cu

Mo

Co

Al

Ti

C

Fe

Mn

Si

P

S

Ni

INCONEL 825

MIN

19.5

1.5

2.5

0.6

22

38

MAX

23.5

3

3.5

1

0.2

1.2

0.05

1

0.5

0.015

0.03

46

 Properties

The levels of copper and molybdenum enable Inconel 825 to resist reducing acids and its agents. Chemical configuration of these Alloy 825 flat offer great resistance to several corrosive atmospheres, such as crevice corrosion, pitting, stress – corrosion cracking and inter – granular corrosion.

Mechanical properties

Grade

Tensile Strength

Yield Strength

Elongation

[MPA]

[MPA]

(% in 50mm) min

Inconel 825

586

241

30

Alloy 825 has excellent resistance in chloride medium also used in various applications requiring a combination of high strength and corrosion resistance. Alloy 825 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. 

Physical Properties

Grade

Density (g/cm3)

Melting Point °C

Elastic Modulus (GPa)

Co-eff of Thermal Expansion (μm/m/°C)

Thermal Conductivity (W/m.K)

Electrical Resistivity (μΩ.m)

27-93°C

Inoloy 825

8.14

1385

193

14

11.1

1.13

 Alloy 825 flats are used in chemical process vessels, catalytic converters, nuclear fuel reprocessing, radioactive waste handling, and marine exhaust. It is similar to SS 800 but has improved resistance to aqueous corrosion. It also has good resistance in neutral chloride media, stress-corrosion cracking and satisfactory resistance to pitting and crevice corrosion.

Applications

  • 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

Shalco Industries is a manufacturing company of Flat in India and Global Supplier.

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