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Solder Alloy 136 vs. ASTM A387 Grade 21L Class 1

Solder alloy 136 belongs to the otherwise unclassified metals classification, while ASTM A387 grade 21L class 1 belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 136 and the bottom bar is ASTM A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 25
190
Elongation at Break, % 19
21
Poisson's Ratio 0.42
0.29
Shear Modulus, GPa 8.9
74
Tensile Strength: Ultimate (UTS), MPa 34
500

Thermal Properties

Latent Heat of Fusion, J/g 34
260
Melting Completion (Liquidus), °C 260
1470
Melting Onset (Solidus), °C 190
1430
Specific Heat Capacity, J/kg-K 150
470
Thermal Conductivity, W/m-K 40
41
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 90
4.1
Density, g/cm3 10
7.9
Embodied Carbon, kg CO2/kg material 6.8
1.8
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 680
62

Common Calculations

Stiffness to Weight: Axial, points 1.4
13
Stiffness to Weight: Bending, points 9.5
24
Strength to Weight: Axial, points 0.92
18
Strength to Weight: Bending, points 2.3
18
Thermal Diffusivity, mm2/s 26
11
Thermal Shock Resistance, points 3.6
14

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.5 to 2.0
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
2.8 to 3.3
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
94.4 to 96.1
Lead (Pb), % 71.9 to 75
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 24.5 to 25.5
0
Zinc (Zn), % 0 to 0.0010
0