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ASTM A387 Grade 21L Class 1 vs. Solder Alloy 201

ASTM A387 grade 21L class 1 belongs to the iron alloys classification, while solder alloy 201 belongs to the otherwise unclassified metals. 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 ASTM A387 grade 21L class 1 and the bottom bar is solder alloy 201.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
13
Elastic (Young's, Tensile) Modulus, GPa 190
50
Elongation at Break, % 21
38
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 74
19
Tensile Strength: Ultimate (UTS), MPa 500
41

Thermal Properties

Latent Heat of Fusion, J/g 260
64
Melting Completion (Liquidus), °C 1470
240
Melting Onset (Solidus), °C 1430
240
Specific Heat Capacity, J/kg-K 470
220
Thermal Conductivity, W/m-K 41
28
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
15

Otherwise Unclassified Properties

Density, g/cm3 7.9
7.3
Embodied Carbon, kg CO2/kg material 1.8
15
Embodied Energy, MJ/kg 23
250
Embodied Water, L/kg 62
1320

Common Calculations

Stiffness to Weight: Axial, points 13
3.8
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 18
1.6
Strength to Weight: Bending, points 18
3.6
Thermal Diffusivity, mm2/s 11
17
Thermal Shock Resistance, points 14
2.7

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
4.5 to 5.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
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
94 to 95.5
Zinc (Zn), % 0
0 to 0.0010