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AWS ERNi-1 vs. R30003 Cobalt

AWS ERNi-1 belongs to the nickel alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 24 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 AWS ERNi-1 and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
210
Elongation at Break, % 22
10 to 73
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 69
83
Tensile Strength: Ultimate (UTS), MPa 470
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1360
1400
Melting Onset (Solidus), °C 1310
1440
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 73
13
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 19
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 60
95
Density, g/cm3 8.7
8.4
Embodied Carbon, kg CO2/kg material 11
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 230
400

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 15
32 to 57
Strength to Weight: Bending, points 15
26 to 38
Thermal Diffusivity, mm2/s 19
3.3
Thermal Shock Resistance, points 17
26 to 45

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0 to 0.15
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 1.0
10 to 20.5
Manganese (Mn), % 0 to 1.0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 93 to 98
14 to 16
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 1.2
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 2.0 to 3.5
0
Residuals, % 0 to 0.5
0