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ASTM A228 Music Wire vs. EZ33A Magnesium

ASTM A228 music wire belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
55
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 12
2.6
Fatigue Strength, MPa 1280
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
17
Shear Strength, MPa 1470
140
Tensile Strength: Ultimate (UTS), MPa 2450
150
Tensile Strength: Yield (Proof), MPa 2050
100

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 400
250
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 49
100
Thermal Expansion, µm/m-K 12
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
24
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
25
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 1.4
25
Embodied Energy, MJ/kg 19
190
Embodied Water, L/kg 45
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
3.6
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
61
Strength to Weight: Axial, points 87
22
Strength to Weight: Bending, points 52
33
Thermal Diffusivity, mm2/s 13
54
Thermal Shock Resistance, points 79
9.2

Alloy Composition

Carbon (C), % 0.7 to 1.0
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 98 to 99
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0.2 to 0.6
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.1 to 0.3
0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3