MakeItFrom.com
Menu (ESC)

R30016 Cobalt vs. AWS E308H

R30016 cobalt belongs to the cobalt alloys classification, while AWS E308H belongs to the iron alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is AWS E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 8.4
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
77
Tensile Strength: Ultimate (UTS), MPa 1010
620

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1270
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
14

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
7.8
Embodied Carbon, kg CO2/kg material 7.7
3.2
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 500
150

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
22
Strength to Weight: Bending, points 26
21
Thermal Diffusivity, mm2/s 3.9
4.2
Thermal Shock Resistance, points 24
16

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.040 to 0.080
Chromium (Cr), % 28 to 32
18 to 21
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 3.0
62.9 to 72.5
Manganese (Mn), % 0.5 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0 to 1.5
0 to 0.75
Nickel (Ni), % 0 to 3.0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 3.5 to 5.5
0