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AWS BAg-21 vs. G-CoCr28 Cobalt

AWS BAg-21 belongs to the otherwise unclassified metals classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 16 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-21 and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
210
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 31
83
Tensile Strength: Ultimate (UTS), MPa 150
560

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Melting Completion (Liquidus), °C 800
1330
Melting Onset (Solidus), °C 690
1270
Specific Heat Capacity, J/kg-K 280
470
Thermal Expansion, µm/m-K 19
14

Otherwise Unclassified Properties

Density, g/cm3 9.8
8.1
Embodied Energy, MJ/kg 970
84

Common Calculations

Stiffness to Weight: Axial, points 4.8
15
Stiffness to Weight: Bending, points 15
24
Strength to Weight: Axial, points 4.2
19
Strength to Weight: Bending, points 6.4
19
Thermal Shock Resistance, points 6.6
14

Alloy Composition


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Carbon (C), % 0
0.050 to 0.25
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 27.5 to 29.5
0
Iron (Fe), % 0
9.7 to 24.5
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 2.0 to 3.0
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.5 to 1.5
Silver (Ag), % 62 to 64
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.0 to 7.0
0
Residuals, % 0 to 0.15
0