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ASTM A228 Music Wire vs. AWS BVAu-2

ASTM A228 music wire belongs to the iron alloys classification, while AWS BVAu-2 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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 AWS BVAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 72
36
Tensile Strength: Ultimate (UTS), MPa 2450
150

Thermal Properties

Latent Heat of Fusion, J/g 250
92
Melting Completion (Liquidus), °C 1450
890
Melting Onset (Solidus), °C 1410
890
Specific Heat Capacity, J/kg-K 470
180
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Density, g/cm3 7.8
17

Common Calculations

Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 24
9.1
Strength to Weight: Axial, points 87
2.4
Strength to Weight: Bending, points 52
3.6
Thermal Shock Resistance, points 79
7.1

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.7 to 1.0
0 to 0.0050
Copper (Cu), % 0
19.5 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 98 to 99
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.2 to 0.6
0
Phosphorus (P), % 0 to 0.025
0 to 0.0020
Silicon (Si), % 0.1 to 0.3
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.0010