MakeItFrom.com
Menu (ESC)

R30016 Cobalt vs. ACI-ASTM CD3MWCuN Steel

R30016 cobalt belongs to the cobalt alloys classification, while ACI-ASTM CD3MWCuN steel belongs to the iron alloys. They have a modest 31% 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 (9, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is ACI-ASTM CD3MWCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 8.4
29
Fatigue Strength, MPa 290
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 85
80
Tensile Strength: Ultimate (UTS), MPa 1010
790
Tensile Strength: Yield (Proof), MPa 580
500

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 7.7
4.2
Embodied Energy, MJ/kg 110
58
Embodied Water, L/kg 500
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
200
Resilience: Unit (Modulus of Resilience), kJ/m3 770
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
28
Strength to Weight: Bending, points 26
24
Thermal Diffusivity, mm2/s 3.9
4.2
Thermal Shock Resistance, points 24
22

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.030
Chromium (Cr), % 28 to 32
24 to 26
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 0 to 3.0
56.6 to 65.3
Manganese (Mn), % 0.5 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 1.5
3.0 to 4.0
Nickel (Ni), % 0 to 3.0
6.5 to 8.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 3.5 to 5.5
0.5 to 1.0