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AWS ERNi-1 vs. R30035 Cobalt

AWS ERNi-1 belongs to the nickel alloys classification, while R30035 cobalt belongs to the cobalt alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AWS ERNi-1 and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220 to 230
Elongation at Break, % 22
9.0 to 46
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 69
84 to 89
Tensile Strength: Ultimate (UTS), MPa 470
900 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1310
1320
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 73
11
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 19
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 60
100
Density, g/cm3 8.7
8.7
Embodied Carbon, kg CO2/kg material 11
10
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 230
410

Common Calculations

Stiffness to Weight: Axial, points 12
14 to 15
Stiffness to Weight: Bending, points 22
23 to 24
Strength to Weight: Axial, points 15
29 to 61
Strength to Weight: Bending, points 15
24 to 39
Thermal Diffusivity, mm2/s 19
3.0
Thermal Shock Resistance, points 17
23 to 46

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.15
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 1.0
0 to 1.0
Manganese (Mn), % 0 to 1.0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 93 to 98
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 0.15
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 2.0 to 3.5
0 to 1.0
Residuals, % 0 to 0.5
0