Square Grid

Alloy 825

A nickel-iron-chromium grade with addition of molybdenum and copper, Alloy 825 has excellent corrosion resistance.

Alloy 825 is a high performing nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. The nickel content is sufficient for resistance to chloride-ion stress-corrosion cracking.


Product form Size range from Size range to
Alloy 825 pipe 0.5 in 8 in
Alloy 825 round bar 10 mm 334 mm
Alloy 825 sheet & plate 2 mm 10 mm
Alloy 825 pipe fittings 0.5 in 8 in
Alloy 825 flanges 0.5 in 8 in

Can't find the product you need? Please contact us directly."

  • Gallery Image


  • Gallery Image

    Pipe Fittings

  • Gallery Image


  • Gallery Image

    Sheet & Plate

  • Gallery Image

    Round Bar

Chemical Analysis

% Ni Cr Fe C Mn Si Cu Mo Al Ti P S
Min 38 19.5 Balance 0 0 0 1.5 2.5 0 0.6 0 0
Max 46 23.5 - 0.05 1 0.5 3 3.5 0.2 1.2 0.020 0.010


Gallery Image

Perfect for applications in the Petrochemical & Refinery sector

Alloy 825 can be used in a variety of applications including:

  • 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
  • Chemical and Food Processing

About Alloy 825

The nickel in Alloy 825, in conjunction with the molybdenum and copper, gives superb resistance to reducing environments such as those containing sulphuric and phosphoric acids. The molybdenum prevents resistance to pitting and crevice corrosion. The alloy’s chromium content confers resistance to a variety of oxidising substances such as nitric acid, nitrates and oxidising salt.

NeoNickel specialises in supplying high performance metal alloys to a wide variety of industries. As a highly respected European supplier we provide the finest quality heat resistant, corrosion resistant, aerospace, titanium and stainless steel alloys anywhere on the market.



8.14 g/cm³
Melting Range:
Specific Heat Capacity:
440 J/kg.°C
Electrical Resistivity:
1.13 µΩ.m
Poisson's Ratio:
0.29 - 0.34


UNS Number:
Werkstoff Number:
ASTM B163, B423, B424, B425, B564, B704, B705, B366, B751, B775, B829
Download the Alloy 825 Data Sheet Download

Request a Quote

Fill in our online form to get a fast quote. Got a question? Contact us on [email protected]