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ASTM A228 Music Wire vs. AWS BVAu-7

ASTM A228 music wire belongs to the iron alloys classification, while AWS BVAu-7 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.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
130
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 72
45
Tensile Strength: Ultimate (UTS), MPa 2450
200

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Melting Completion (Liquidus), °C 1450
1120
Melting Onset (Solidus), °C 1410
1100
Specific Heat Capacity, J/kg-K 470
240
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 7.8
15

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 87
3.7
Strength to Weight: Bending, points 52
5.1
Thermal Shock Resistance, points 79
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.7 to 1.0
0 to 0.0050
Cobalt (Co), % 0
0 to 0.060
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 98 to 99
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.2 to 0.6
0
Nickel (Ni), % 0
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
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