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CR021A Copper vs. Solder Alloy 122

CR021A copper belongs to the copper alloys classification, while solder alloy 122 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is CR021A copper and the bottom bar is solder alloy 122.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
20
Elongation at Break, % 15
30
Poisson's Ratio 0.34
0.43
Shear Modulus, GPa 43
6.9
Tensile Strength: Ultimate (UTS), MPa 230
30

Thermal Properties

Latent Heat of Fusion, J/g 210
27
Melting Completion (Liquidus), °C 1090
300
Melting Onset (Solidus), °C 1040
270
Specific Heat Capacity, J/kg-K 390
140
Thermal Conductivity, W/m-K 380
25
Thermal Expansion, µm/m-K 17
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 99
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
75
Density, g/cm3 9.0
11
Embodied Carbon, kg CO2/kg material 2.6
5.0
Embodied Energy, MJ/kg 41
84
Embodied Water, L/kg 320
540

Common Calculations

Stiffness to Weight: Axial, points 7.2
1.0
Stiffness to Weight: Bending, points 18
8.2
Strength to Weight: Axial, points 7.1
0.77
Strength to Weight: Bending, points 9.3
2.0
Thermal Diffusivity, mm2/s 110
17
Thermal Shock Resistance, points 8.1
3.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0 to 0.00050
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 99.95 to 99.998
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0 to 0.0050
88.4 to 90.5
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0.0020 to 0.0070
0
Silver (Ag), % 0 to 0.015
0 to 0.1
Tin (Sn), % 0
9.5 to 10.5
Zinc (Zn), % 0
0 to 0.0010