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Zamak 7 vs. ASTM A228 Music Wire

Zamak 7 belongs to the zinc alloys classification, while ASTM A228 music wire belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
710
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
12
Fatigue Strength, MPa 47
1280
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
72
Shear Strength, MPa 210
1470
Tensile Strength: Ultimate (UTS), MPa 280
2450
Tensile Strength: Yield (Proof), MPa 250
2050

Thermal Properties

Latent Heat of Fusion, J/g 120
250
Maximum Temperature: Mechanical, °C 95
400
Melting Completion (Liquidus), °C 390
1450
Melting Onset (Solidus), °C 380
1410
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 110
49
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.4
Embodied Energy, MJ/kg 57
19
Embodied Water, L/kg 380
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
280
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
87
Strength to Weight: Bending, points 15
52
Thermal Diffusivity, mm2/s 43
13
Thermal Shock Resistance, points 8.6
79

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.7 to 1.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
98 to 99
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.2 to 0.6
Nickel (Ni), % 0.0050 to 0.020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.1 to 0.3
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0