Nickel Alloy 825/ Incoloy 825®

Technical Data Sheet

Chemical Composition Limits
Weight % Ni Fe Cr Mo Cu Ti C Mn S Si Al
Alloy 825 38 - 46 22 min 19.5 - 23.5 2.5 - 3.5 1.5 - 3 0.6 - 1.2 0.05 max 1 max 0.03 max 0.5 max 0.2 max

Alloy 825 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localised attack such as pitting and crevice corrosion. Alloy 825 is especially resistant to sulphuric and phosphoric acid. Alloy 825 is used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment and handling of radioactive wastes.

Typical Mechanical Properties

Material Form and Condition Tensile Strength MPa Yield Strength (0.2% Offset) MPa Elongation (%)
Alloy 825 Tube Annealed 772 441 36
Alloy 825 Tube Cold Drawn 1000 889 15
Alloy 825 Bar Annealed 690 324 45
Alloy 825 Plate Annealed 662 338 45
Alloy 825 Sheet Annealed 758 421 39

Alloy 825 is available in Sheet, Plate, Strip, Pipe, Tube, Rod, Round Bar, Flat Bar, Hexagon, Wire and Forging Stock. View Stock List, Plate Stock List or contact Sales for further availability.

UNS N08825
WS 2.458
FMC Spec M41104, M40116, M40154
NACE MR-0175/ISO 15156

Alloy 825 Sheet, Strip and Plate
BS3072 NA16
BS 3073 NA16
ASTM B 424
ASTM B 906
DIN 17750
VdTUV 432

Alloy 825 Pipe and Tube
BS 3074 NA16
ASTM B163, ASME SB 163
ASTM B 423, ASME SB 423
ASTM B704, ASME SB 704
ASTM B 705, ASME SB 705
ASTM B 751, ASME SB 751
ASTM B 755, ASME SB 755
ASTM B 829, ASME SB 829
DIN 17751, VdTUV 432

Alloy 825 Rod, Bars, Forgings
BS 3076 NA16
ASTM B 425
ASTM B 564
ASME Code Case N-572
DIN 17752, DIN 17753, DIN 17754
VdTUV 432

Other Similar Specifications

DIN 17744

Contact Sales for stock availability.

At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.