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AWS BNi-8 vs. ASTM A228 Music Wire

AWS BNi-8 belongs to the nickel alloys classification, while ASTM A228 music wire belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-8 and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 67
72
Tensile Strength: Ultimate (UTS), MPa 570
2450

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Melting Completion (Liquidus), °C 1010
1450
Melting Onset (Solidus), °C 980
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 46
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 120
19
Embodied Water, L/kg 220
45

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
87
Strength to Weight: Bending, points 19
52
Thermal Shock Resistance, points 17
79

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.060
0.7 to 1.0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0
98 to 99
Manganese (Mn), % 21.5 to 24.5
0.2 to 0.6
Nickel (Ni), % 61.6 to 68.5
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 6.0 to 8.0
0.1 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0