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Solder Alloy 301 vs. ASTM A372 Grade M Steel

Solder alloy 301 belongs to the otherwise unclassified metals classification, while ASTM A372 grade M steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 301 and the bottom bar is ASTM A372 grade M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 23
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 40
190
Elongation at Break, % 51
18 to 21
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 15
73
Tensile Strength: Ultimate (UTS), MPa 55
810 to 910
Tensile Strength: Yield (Proof), MPa 49
660 to 770

Thermal Properties

Latent Heat of Fusion, J/g 55
250
Melting Completion (Liquidus), °C 140
1460
Melting Onset (Solidus), °C 140
1420
Specific Heat Capacity, J/kg-K 160
470
Thermal Conductivity, W/m-K 19
46
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 4.9
9.1

Otherwise Unclassified Properties

Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 13
2.0
Embodied Energy, MJ/kg 210
27

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
160
Resilience: Unit (Modulus of Resilience), kJ/m3 30
1140 to 1580
Stiffness to Weight: Axial, points 2.5
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.8
29 to 32
Strength to Weight: Bending, points 3.7
24 to 27
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 7.2
24 to 27

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 56.5 to 59
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.23
Chromium (Cr), % 0
1.5 to 2.0
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
92.5 to 95.1
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0 to 0.010
2.8 to 3.9
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.3
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 41 to 43
0
Vanadium (V), % 0
0 to 0.080
Zinc (Zn), % 0 to 0.0010
0