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ASTM A228 Music Wire vs. 2618 Aluminum

ASTM A228 music wire belongs to the iron alloys classification, while 2618 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM A228 music wire and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
120
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 12
5.8
Fatigue Strength, MPa 1280
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Shear Strength, MPa 1470
260
Tensile Strength: Ultimate (UTS), MPa 2450
420
Tensile Strength: Yield (Proof), MPa 2050
350

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
210
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
550
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 49
160
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
11
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 1.4
8.3
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 45
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
23
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 87
40
Strength to Weight: Bending, points 52
42
Thermal Diffusivity, mm2/s 13
62
Thermal Shock Resistance, points 79
19

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.9
Carbon (C), % 0.7 to 1.0
0
Copper (Cu), % 0
1.9 to 2.7
Iron (Fe), % 98 to 99
0.9 to 1.3
Magnesium (Mg), % 0
1.3 to 1.8
Manganese (Mn), % 0.2 to 0.6
0
Nickel (Ni), % 0
0.9 to 1.2
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.1 to 0.3
0.1 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.040 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15