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AWS ERNi-1 vs. R30001 Cobalt

AWS ERNi-1 belongs to the nickel alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 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 R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220
Elongation at Break, % 22
1.0
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 69
86
Tensile Strength: Ultimate (UTS), MPa 470
620

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1360
1530
Melting Onset (Solidus), °C 1310
1260
Specific Heat Capacity, J/kg-K 450
430
Thermal Conductivity, W/m-K 73
15
Thermal Expansion, µm/m-K 11
11

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.7
9.0
Embodied Carbon, kg CO2/kg material 11
8.9
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 230
460

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 15
19
Strength to Weight: Bending, points 15
18
Thermal Diffusivity, mm2/s 19
3.7
Thermal Shock Resistance, points 17
19

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Carbon (C), % 0 to 0.15
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 1.0
0 to 3.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 93 to 98
0 to 3.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 2.0 to 3.5
0
Tungsten (W), % 0
11 to 13
Residuals, % 0 to 0.5
0