MakeItFrom.com
Menu (ESC)

R30012 Cobalt vs. ASTM A209 Steel

R30012 cobalt belongs to the cobalt alloys classification, while ASTM A209 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is ASTM A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
34
Fatigue Strength, MPa 320
180 to 200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 830
420 to 460
Tensile Strength: Yield (Proof), MPa 650
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1280
1420 to 1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.1 to 8.2

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 120
20
Embodied Water, L/kg 480
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 960
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
15 to 16
Strength to Weight: Bending, points 22
16 to 17
Thermal Diffusivity, mm2/s 3.8
13
Thermal Shock Resistance, points 23
12 to 14