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SAE-AISI M2 Steel vs. Solder Alloy 181

SAE-AISI M2 steel belongs to the iron alloys classification, while solder alloy 181 belongs to the otherwise unclassified metals. There are 19 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 SAE-AISI M2 steel and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
18
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 77
6.1
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
27

Thermal Properties

Latent Heat of Fusion, J/g 260
26
Melting Completion (Liquidus), °C 1610
310
Melting Onset (Solidus), °C 1570
300
Specific Heat Capacity, J/kg-K 440
130
Thermal Conductivity, W/m-K 22
24
Thermal Expansion, µm/m-K 10
29

Otherwise Unclassified Properties

Density, g/cm3 8.4
11
Embodied Carbon, kg CO2/kg material 8.8
6.2
Embodied Energy, MJ/kg 130
100

Common Calculations

Stiffness to Weight: Axial, points 13
0.86
Stiffness to Weight: Bending, points 23
7.7
Strength to Weight: Axial, points 25 to 71
0.66
Strength to Weight: Bending, points 22 to 44
1.8
Thermal Diffusivity, mm2/s 5.9
16
Thermal Shock Resistance, points 27 to 76
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), % 0.78 to 1.1
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 78.5 to 83.4
0 to 0.020
Lead (Pb), % 0
96.2 to 98
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.25
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0 to 0.0010