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ASTM A387 Grade 2 Steel vs. Solder Alloy 181

ASTM A387 grade 2 steel belongs to the iron alloys classification, while solder alloy 181 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 2 steel and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
18
Elongation at Break, % 25
41
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 73
6.1
Tensile Strength: Ultimate (UTS), MPa 470 to 550
27

Thermal Properties

Latent Heat of Fusion, J/g 250
26
Melting Completion (Liquidus), °C 1470
310
Melting Onset (Solidus), °C 1420
300
Specific Heat Capacity, J/kg-K 470
130
Thermal Conductivity, W/m-K 45
24
Thermal Expansion, µm/m-K 13
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
7.4

Otherwise Unclassified Properties

Density, g/cm3 7.9
11
Embodied Carbon, kg CO2/kg material 1.6
6.2
Embodied Energy, MJ/kg 20
100

Common Calculations

Stiffness to Weight: Axial, points 13
0.86
Stiffness to Weight: Bending, points 24
7.7
Strength to Weight: Axial, points 16 to 20
0.66
Strength to Weight: Bending, points 17 to 19
1.8
Thermal Diffusivity, mm2/s 12
16
Thermal Shock Resistance, points 14 to 16
3.8

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.050 to 0.21
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 97.1 to 98.3
0 to 0.020
Lead (Pb), % 0
96.2 to 98
Manganese (Mn), % 0.55 to 0.8
0
Molybdenum (Mo), % 0.45 to 0.6
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.15 to 0.4
0
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.0010