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N07750 Nickel vs. G-CoCr28 Cobalt

N07750 nickel belongs to the nickel alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is N07750 nickel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 25
6.7
Fatigue Strength, MPa 520
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
83
Tensile Strength: Ultimate (UTS), MPa 1200
560
Tensile Strength: Yield (Proof), MPa 820
260

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 960
1200
Melting Completion (Liquidus), °C 1430
1330
Melting Onset (Solidus), °C 1400
1270
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
8.5
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 60
100
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 10
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 260
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
31
Resilience: Unit (Modulus of Resilience), kJ/m3 1770
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 40
19
Strength to Weight: Bending, points 30
19
Thermal Diffusivity, mm2/s 3.3
2.2
Thermal Shock Resistance, points 36
14

Alloy Composition

Aluminum (Al), % 0.4 to 1.0
0
Carbon (C), % 0 to 0.080
0.050 to 0.25
Chromium (Cr), % 14 to 17
27 to 30
Cobalt (Co), % 0 to 1.0
48 to 52
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 5.0 to 9.0
9.7 to 24.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 70 to 77.7
0 to 4.0
Niobium (Nb), % 0.7 to 1.2
0 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0.5 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 2.3 to 2.8
0