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Solder Alloy 704 vs. SAE-AISI M3 Class 1 Steel

Solder alloy 704 belongs to the otherwise unclassified metals classification, while SAE-AISI M3 class 1 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is SAE-AISI M3 class 1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
200
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
77
Tensile Strength: Ultimate (UTS), MPa 55
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 62
260
Melting Completion (Liquidus), °C 240
1610
Melting Onset (Solidus), °C 220
1570
Specific Heat Capacity, J/kg-K 220
440
Thermal Conductivity, W/m-K 50
26
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Density, g/cm3 7.5
8.3
Embodied Carbon, kg CO2/kg material 19
10
Embodied Energy, MJ/kg 320
150

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 2.1
26 to 72
Strength to Weight: Bending, points 4.3
22 to 44
Thermal Diffusivity, mm2/s 30
7.2
Thermal Shock Resistance, points 3.5
24 to 67

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), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
1.0 to 1.1
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.050
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
76.9 to 82.9
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 94.3 to 95.2
0
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.3 to 2.8
Zinc (Zn), % 0 to 0.0010
0