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Special Metals INCOLOY® Alloy 825

Category Metal , Nonferrous Metal , Nickel Alloy , Superalloy
Manufacturer Special Metals (includes the former Inco Alloys International Inc.)
Trade Name INCOLOY®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Special Metals INCOLOY® Alloy 825.pdf
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Material Notes:
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 localized attack such as pitting and crevice corrosion. The alloy is especially resistant to sulfuric and phosphoric acids. Used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment. Standard product forms are round, flats, forging stock, pipe, tube, plate, sheet, strip, and wire.Data provided by the manufacturer, Special Metals.
Physical Properties Metric English Comments
Density 8.14 g/cc
0.294 lb/in³
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 690 MPa
100000 psi
Annealed
590 MPa

@Temperature 550 °C
85600 psi

@Temperature 1020 °F
Annealed prior to test
Tensile Strength, Yield 310 MPa
45000 psi
Annealed
220 MPa

@Temperature 550 °C
31900 psi

@Temperature 1020 °F
Annealed prior to test
Elongation at Break 45 %
45 %
Annealed prior to test.
45 %

@Temperature 550 °C
45 %

@Temperature 1020 °F
Annealed prior to test.
Thermal Properties Metric English Comments
CTE, linear 14.0 µm/m-°C

@Temperature 20.0 - 100 °C
7.78 µin/in-°F

@Temperature 68.0 - 212 °F
Specific Heat Capacity 0.440 J/g-°C
0.105 BTU/lb-°F
Thermal Conductivity 11.1 W/m-K
77.0 BTU-in/hr-ft²-°F
Melting Point 1370 - 1400 °C
2500 - 2550 °F
Solidus 1370 °C
2500 °F
Liquidus 1400 °C
2550 °F
Component Elements Properties Metric English Comments
Aluminum, Al <= 0.20 %
<= 0.20 %
Carbon, C <= 0.050 %
<= 0.050 %
Chromium, Cr 19.5 - 23.5 %
19.5 - 23.5 %
Copper, Cu 1.5 - 3.0 %
1.5 - 3.0 %
Iron, Fe >= 22 %
>= 22 %
Manganese, Mn <= 1.0 %
<= 1.0 %
Molybdenum, Mo 2.5 - 3.5 %
2.5 - 3.5 %
Nickel, Ni 38 - 46 %
38 - 46 %
Silicon, Si <= 0.50 %
<= 0.50 %
Sulfur, S <= 0.030 %
<= 0.030 %
Titanium, Ti 0.60 - 1.2 %
0.60 - 1.2 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.000113 ohm-cm
0.000113 ohm-cm
Magnetic Permeability 1.005
1.005
at 200 oersted (15.9 kA/m)
Curie Temperature <= -196 °C
<= -321 °F
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