Incoloy 825 –   Incoloy 825 Nickel-Chromium Alloy  

 

Incoloy 825 – Nickel-Chromium Alloy

Incoloy 825 is a Nickel-Iron-Chromium alloy with additions of Molybdenum and Copper. It has excellent resistance to both reducing and oxidising acids, to stress-corrosion cracking and to localised pitting and crevice corrosion. It is also especially resistant to sulphuric and phosphoric acids.

Chemical Composition of Incoloy 825

The compositional range for Incoloy 825 is provided in the table below.

Element	Content
Ni	38 - 46 %
Fe	22 % min
Cr	19.5 - 23.5%
Mo	2.5 - 3.5 %
Cu	1.5 3 %
Ti	0.6 - 1.2 %

 

Provide all grade of these alloy by different shape & size is Our expertise

For any inquiry & request, don't hesitate to contact us

Typical Properties of Incoloy 825

Typical properties of Incoloy 825 are covered in the following table.

Property	Metric	Imperial
Density	8.14 g/cm3	0.294 lb/in3
Melting point	1400°C	2550°F
Co-Efficient of Expansion	14.0 µm/m.°C (20-100 °C)	7.8x10-6 in/in.°F (70-212 °F)
Modulus of rigidity	75.9 kN/mm2	11009 ksi
Modulus of elasticity	196 kN/mm2	28428 ksi

Properties of Supplied Materials and Heat Treated Materials

Condition of Supply	Heat Treatment (After Forming)
Spring Temper/Spring Temper	Stress relieve at 450 - 470°C (840 - 880°F) for 30-60 minutes and air cool.
Condition	Approx Tensile Strength		Approx Service Temp.
Annealed	600 - 800 N/mm2	87 -116 ksi	-100° to +250°C	-145° to +480°F
Spring Temper	800 - 1000 N/mm2	116 - 159 ksi	-100° to +250°C	-145° to +480°F

Relevant Standards

Incoloy 825 is covered by the following standards:

• BS 3076 NA 16
• ASTM B425

Equivalent Materials

Incoloy 825 is the tradename of Special Metals Group of Companies and equivalent to:

• NR 2.4858
• UNS N08825
• AWS 022

Applications of Incoloy 825

Incoloy 825 typically finds application in:

• Chemical Processing
• Nuclear Fuel Reprocessing
• Acid Production
• Pickling Equipment

Provide all grade of these alloy by different shape & size is Our expertise

For any inquiry & request, don't hesitate to contact us

Availability:
Incoloy 825 Plate	Incoloy 825 Fittings	Incoloy 825 Tube / Pipe
Incoloy 825 Bar	Incoloy 825 Sheet	Incoloy 825 Coil /Strap
Incoloy 825 Fasteners / Flanges	Incoloy 825 Powder	Incoloy 825 Welding Product

 

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

 

Provide all grade of these alloy by different shape & size is Our expertise

For any inquiry & request, don't hesitate to contact us

Specifications
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
ASME SB 424
ASME SB 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 SB 425
ASME SB 564
ASME Code Case N-572
DIN 17752, DIN 17753, DIN 17754
VdTUV 432

Other Similar Specifications
ASTM B366
ASME SB 366
DIN 17744 

Provide all grade of these alloy by different shape & size is Our expertise

For any inquiry & request, don't hesitate to contact us

 Disclaimer
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.