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Nickel 625 vs. R30008 Cobalt

Nickel 625 belongs to the nickel alloys classification, while R30008 cobalt belongs to the cobalt alloys. They have 47% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 33 to 34
1.1 to 73
Fatigue Strength, MPa 240 to 320
320 to 530
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
83
Tensile Strength: Ultimate (UTS), MPa 790 to 910
950 to 1700
Tensile Strength: Yield (Proof), MPa 320 to 450
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 1350
1400
Melting Onset (Solidus), °C 1290
1330
Specific Heat Capacity, J/kg-K 440
450
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 80
95
Density, g/cm3 8.6
8.4
Embodied Carbon, kg CO2/kg material 14
8.1
Embodied Energy, MJ/kg 190
110
Embodied Water, L/kg 290
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
590 to 2720
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 29
31 to 56
Strength to Weight: Bending, points 22 to 24
25 to 37
Thermal Shock Resistance, points 22 to 25
25 to 44

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Boron (B), % 0
0 to 0.0010
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 20 to 23
18.5 to 21.5
Cobalt (Co), % 0 to 1.0
39 to 42
Iron (Fe), % 0 to 5.0
7.6 to 20
Manganese (Mn), % 0 to 0.5
1.0 to 2.0
Molybdenum (Mo), % 8.0 to 10
6.5 to 7.5
Nickel (Ni), % 58 to 68.9
15 to 18
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 1.2
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.4
0

Comparable Variants