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Nickel 825 vs. SAE-AISI M6 Steel

Nickel 825 belongs to the nickel alloys classification, while SAE-AISI M6 steel belongs to the iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is nickel 825 and the bottom bar is SAE-AISI M6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 650
840 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1400
1560
Melting Onset (Solidus), °C 1370
1510
Specific Heat Capacity, J/kg-K 460
440
Thermal Conductivity, W/m-K 11
17
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 41
39
Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 7.2
8.0
Embodied Energy, MJ/kg 100
120
Embodied Water, L/kg 230
160

Common Calculations

PREN (Pitting Resistance) 31
28
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22
28 to 73
Strength to Weight: Bending, points 20
24 to 45
Thermal Diffusivity, mm2/s 2.9
4.7
Thermal Shock Resistance, points 17
26 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0 to 0.050
0.75 to 0.85
Chromium (Cr), % 19.5 to 23.5
3.8 to 4.5
Cobalt (Co), % 0
11 to 13
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 22 to 37.9
68.8 to 74.6
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 2.5 to 3.5
4.5 to 5.5
Nickel (Ni), % 38 to 46
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.050
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.6 to 1.2
0
Tungsten (W), % 0
3.8 to 4.8
Vanadium (V), % 0
1.3 to 1.7