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R30001 Cobalt vs. Solder Alloy 704

R30001 cobalt belongs to the cobalt alloys classification, while solder alloy 704 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is solder alloy 704.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
51
Elongation at Break, % 1.0
30
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 86
19
Tensile Strength: Ultimate (UTS), MPa 620
55

Thermal Properties

Latent Heat of Fusion, J/g 310
62
Melting Completion (Liquidus), °C 1530
240
Melting Onset (Solidus), °C 1260
220
Specific Heat Capacity, J/kg-K 430
220
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
13
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
15

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.5
Embodied Carbon, kg CO2/kg material 8.9
19
Embodied Energy, MJ/kg 130
320

Common Calculations

Stiffness to Weight: Axial, points 14
3.8
Stiffness to Weight: Bending, points 22
17
Strength to Weight: Axial, points 19
2.1
Strength to Weight: Bending, points 18
4.3
Thermal Diffusivity, mm2/s 3.7
30
Thermal Shock Resistance, points 19
3.5

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 2.0 to 3.0
0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 43 to 59
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.010
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
4.8 to 5.2
Tin (Sn), % 0
94.3 to 95.2
Tungsten (W), % 11 to 13
0
Zinc (Zn), % 0
0 to 0.0010