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EN 1.7221 Steel vs. Solder Alloy 135

EN 1.7221 steel belongs to the iron alloys classification, while solder alloy 135 belongs to the otherwise unclassified metals. There are 24 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 EN 1.7221 steel and the bottom bar is solder alloy 135.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
27
Elongation at Break, % 11 to 17
20
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 73
9.5
Tensile Strength: Ultimate (UTS), MPa 650 to 780
35

Thermal Properties

Latent Heat of Fusion, J/g 250
36
Melting Completion (Liquidus), °C 1460
250
Melting Onset (Solidus), °C 1420
190
Specific Heat Capacity, J/kg-K 470
160
Thermal Conductivity, W/m-K 44
42
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
9.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
90
Density, g/cm3 7.8
10
Embodied Carbon, kg CO2/kg material 1.5
7.3
Embodied Energy, MJ/kg 20
120
Embodied Water, L/kg 51
720

Common Calculations

Stiffness to Weight: Axial, points 13
1.5
Stiffness to Weight: Bending, points 24
9.9
Strength to Weight: Axial, points 23 to 27
1.0
Strength to Weight: Bending, points 21 to 24
2.4
Thermal Diffusivity, mm2/s 12
27
Thermal Shock Resistance, points 19 to 23
3.5

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0.5 to 1.8
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.22 to 0.29
0
Chromium (Cr), % 0.8 to 1.2
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 96.8 to 98.3
0 to 0.020
Lead (Pb), % 0
67.1 to 70
Manganese (Mn), % 0.5 to 0.8
0
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
29.5 to 30.5
Zinc (Zn), % 0
0 to 0.0010