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ASTM A387 Grade 21L Class 1 vs. Solder Alloy 811

ASTM A387 grade 21L class 1 belongs to the iron alloys classification, while solder alloy 811 belongs to the otherwise unclassified metals. There are 23 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 ASTM A387 grade 21L class 1 and the bottom bar is solder alloy 811.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
52
Elongation at Break, % 21
38
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 74
19
Tensile Strength: Ultimate (UTS), MPa 500
53

Thermal Properties

Latent Heat of Fusion, J/g 260
63
Melting Completion (Liquidus), °C 1470
200
Melting Onset (Solidus), °C 1430
190
Specific Heat Capacity, J/kg-K 470
230
Thermal Conductivity, W/m-K 41
59
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
14
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
17

Otherwise Unclassified Properties

Density, g/cm3 7.9
7.3
Embodied Carbon, kg CO2/kg material 1.8
14
Embodied Energy, MJ/kg 23
240
Embodied Water, L/kg 62
1200

Common Calculations

Stiffness to Weight: Axial, points 13
4.0
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 18
2.0
Strength to Weight: Bending, points 18
4.3
Thermal Diffusivity, mm2/s 11
35
Thermal Shock Resistance, points 14
3.3

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
2.8 to 3.2
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 94.4 to 96.1
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
87.8 to 89.7
Zinc (Zn), % 0
7.5 to 8.5