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AWS BAg-28 vs. R30605 Cobalt

AWS BAg-28 belongs to the otherwise unclassified metals classification, while R30605 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-28 and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 88
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 33
81
Tensile Strength: Ultimate (UTS), MPa 150
1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Melting Completion (Liquidus), °C 710
1410
Melting Onset (Solidus), °C 650
1330
Specific Heat Capacity, J/kg-K 320
410
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.6
Embodied Carbon, kg CO2/kg material 40
9.8
Embodied Energy, MJ/kg 630
140

Common Calculations

Stiffness to Weight: Axial, points 5.6
12
Stiffness to Weight: Bending, points 17
21
Strength to Weight: Axial, points 4.7
33 to 55
Strength to Weight: Bending, points 7.1
25 to 36
Thermal Shock Resistance, points 5.8
31 to 52

Alloy Composition

Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 57
Copper (Cu), % 29 to 31
0
Iron (Fe), % 0
0 to 3.0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 39 to 41
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.5 to 2.5
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 26 to 30
0
Residuals, % 0 to 0.15
0