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ATI Allegheny Ludlum AL 825™ Nickel Alloy

Category Metal , Nonferrous Metal , Nickel Alloy , Superalloy
Manufacturer ATI Allegheny Ludlum
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ATI Allegheny Ludlum AL 825™ Nickel Alloy.pdf
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Material Notes:
Allegheny Ludlum AL 825 alloy is an austenitic nickel-iron-chromium-molybdenum-copper alloy containing high levels of corrosion resistance to both moderately oxidizing and moderately reducing environments. The alloy has a high level of nickel, which in combination with the level of molybdenum and copper, produces substantially improved corrosion resistance in reducing environments compared to the standard stainless steels.The nickel content is sufficiently high to provide good resistance to chloride stress corrosion cracking. The chromium and molybdenum content of the alloy provides a level of resistance to chloride ion pitting, however, not to the level of other Allegheny Ludlum alloys. In addition, the alloy is stabilized against sensitization in the welded condition by the addition of a specified level of titanium. Because of this stabilization, the material is resistant to intergranular attack after exposure in the temperature range which would sensitize unstabilized stainless steels.This alloy has a long history of use in many corrosive environments and has been incorporated in ASTM and ASME specifications for many years.Information provided by Allegheny Ludlum
Physical Properties Metric English Comments
Density 8.13 g/cc
0.294 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell B 85
85
Typical Annealed
Tensile Strength, Ultimate 690 MPa
100000 psi
typical
Tensile Strength, Yield 300 MPa
43500 psi
typical
Elongation at Break 45 %
45 %
typical in 2"
Modulus of Elasticity 195 GPa
28300 ksi
typical
Thermal Properties Metric English Comments
CTE, linear 13.9 µm/m-°C

@Temperature 20.0 - 93.0 °C
7.72 µin/in-°F

@Temperature 68.0 - 199 °F
15.3 µm/m-°C

@Temperature 20.0 - 315 °C
8.50 µin/in-°F

@Temperature 68.0 - 599 °F
15.7 µm/m-°C

@Temperature 20.0 - 427 °C
8.72 µin/in-°F

@Temperature 68.0 - 801 °F
Specific Heat Capacity 0.500 J/g-°C
0.120 BTU/lb-°F
Maximum Service Temperature, Air 538 °C
1000 °F
Ductility maintained well above this temp.
Component Elements Properties Metric English Comments
Aluminum, Al 0.15 %
0.15 %
Carbon, C 0.020 %
0.020 %
Chromium, Cr 21 %
21 %
Copper, Cu 2.0 %
2.0 %
Iron, Fe 32.053 %
32.053 %
as balance
Manganese, Mn 0.50 %
0.50 %
Molybdenum, Mo 3.0 %
3.0 %
Nickel, Ni 40 %
40 %
Phosphorous, P 0.025 %
0.025 %
Silicon, Si 0.25 %
0.25 %
Sulfur, S 0.0020 %
0.0020 %
Titanium, Ti 1.0 %
1.0 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.000113 ohm-cm
0.000113 ohm-cm
Magnetic Permeability <= 1.02
<= 1.02
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