Standard Grade

Trade Name

UNS No.

DIN

BS

JIS

French Specs

INCOLOY 825

UNS N08825

WS 2.4858

NA16

NCF825TB

-

Specification

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, JIS G4904

Typical use

Incoloy 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.

Weight Formula

Average Wall: (OD-WT) x WT x 0,0260 = Kg/m (all sizes in mm)
Minimum Wall: (OD-WT) x WT x 0,0270 = Kg/m (all sizes in mm)

Chemical Composition Limits

Weight %

Ni

Fe

Cr

Mo

Cu

Ti

C

Mn

S

Si

Al

Incoloy 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

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