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R30075 Cobalt vs. AWS ERTi-2

R30075 cobalt belongs to the cobalt alloys classification, while AWS ERTi-2 belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is AWS ERTi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
110
Elongation at Break, % 12
20
Fatigue Strength, MPa 250 to 840
190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 82 to 98
40
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
340
Tensile Strength: Yield (Proof), MPa 480 to 840
280

Thermal Properties

Latent Heat of Fusion, J/g 320
420
Melting Completion (Liquidus), °C 1360
1670
Melting Onset (Solidus), °C 1290
1620
Specific Heat Capacity, J/kg-K 450
540
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
7.1

Otherwise Unclassified Properties

Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 8.1
31
Embodied Energy, MJ/kg 110
510
Embodied Water, L/kg 530
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
64
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
360
Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
35
Strength to Weight: Axial, points 26 to 42
21
Strength to Weight: Bending, points 22 to 31
24
Thermal Diffusivity, mm2/s 3.5
8.7
Thermal Shock Resistance, points 21 to 29
27

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.030
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 0 to 0.75
0 to 0.12
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.25
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
99.667 to 99.92
Tungsten (W), % 0 to 0.2
0