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Alloy 825 Nickel Sheet, Coil & Plate - UNS N08825


Incoloy® 825 is a nickel-iron-chromium alloy with added molybdenum, copper, and titanium.  Alloy 825 features excellent corrosion resistance as well as chloride-ion stress-corrosion cracking.  The material also provides exceptional resistance to oxidation in sulfuric and phosphoric acid environments. Similar to Alloy 800, Type 825 maintains improved resistance to corrosion in aqueous environments.

Standard Inventory Specifications 

  • UNS N08825
  • ASTM B 424
  • ASME SB 424
  • W.Nr. 2.4858

Common Trade Names

  • Incoloy 825 (® Special Metals)
  • ATI 825 (™ Allegheny Technologies)

Common Applications of Alloy 825 Nickel

  • Chemical processing
  • Pollution control
  • Oil and gas recovery
  • Acid production
  • Pickling operations
  • Nuclear fuel reprocessing
  • Handling of radioactive wastes
  • Petroleum refining
  • Seawater Heat
  • Exchangers
  • Ore processing
  • Heating Coils

Inventory Size Range

  • Sheet : 0.114" - 0.130"
  • Plate : 0.1875" - 0.500"

Please contact us for more details.

The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

Alloy 825 Chemical Composition

Element Percent By Weight
Carbon 0.05 Maximum
Silicon 0.50 Maximum
Manganese 1.0 Maximum
Sulfur 0.03 Maximum
Nickel 38.0 - 46.0
Copper 1.5 - 3.0
Iron 22.0 Minimum
Chromium 19.5 - 23.5
Molybdenum 2.5- 3.5
Titanium 0.6 - 1.2
Aluminum 0.20 Maximum

 

 

Alloy 825 Physical Properties

  • Density: .294 lb/in3
  • Melting Range: 2500-2550°F
  • Specific Heat Btu/lb°F: .105
  • Thermal Conductivity at 78°F: 76.8 Btu-ft/hr-ft2
  • Modulus of Elasticity, psi (GPa): 28.3 psi x 106 (195)

 

Linear Coefficient of Thermal Expansion

Temperature, °F 200 400 600 800
10-6/°F 7.7 8.3 8.5 8.7

 

Thermal Conductivity

Temperature, °F 70 200 400 600 800
Btu/h-ft-°F 6.4 7.1 8.1 9.1 10.0

 

Mechanical Properties and Yield Strength of Alloy 825

   
0.2% Yield Strength, ksi [Mpa] 35 [240]
Tensile Strength, ksi [Mpa] 85 [585]
Elongation, % 30

 

Temperature, °F 70 200 400 600 800 1000
0.2% Yield Strength (000, ksi) 43 40 35 33 33 32
Ultimate Tensile Strength (000, ksi) 100 95 92 90 88 85
Elongation % 45 45 43 45 45 45

 


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