ASTM A228 Music Wire vs. AWS BNi-8

ASTM A228 music wire belongs to the iron alloys classification, while AWS BNi-8 belongs to the nickel 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 ASTM A228 music wire and the bottom bar is AWS BNi-8.

ASTM A228 (SWP-A, K08500) Music Wire AWS BNi-8 (N99800) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		180

Poisson's Ratio		0.29
Poisson's Ratio		0.32

Shear Modulus, GPa		72
Shear Modulus, GPa		67

Tensile Strength: Ultimate (UTS), MPa		2450
Tensile Strength: Ultimate (UTS), MPa		570

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		390

Melting Completion (Liquidus), °C		1450
Melting Completion (Liquidus), °C		1010

Melting Onset (Solidus), °C		1410
Melting Onset (Solidus), °C		980

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		1.8
Base Metal Price, % relative		46

Density, g/cm³		7.8
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		1.4
Embodied Carbon, kg CO₂/kg material		8.2

Embodied Energy, MJ/kg		19
Embodied Energy, MJ/kg		120

Embodied Water, L/kg		45
Embodied Water, L/kg		220

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		87
Strength to Weight: Axial, points		20

Strength to Weight: Bending, points		52
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		79
Thermal Shock Resistance, points		17

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Carbon (C), %		0.7 to 1.0
Carbon (C), %		0 to 0.060

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Copper (Cu), %		0
Copper (Cu), %		4.0 to 5.0

Iron (Fe), %		98 to 99
Iron (Fe), %		0

Manganese (Mn), %		0.2 to 0.6
Manganese (Mn), %		21.5 to 24.5

Nickel (Ni), %		0
Nickel (Ni), %		61.6 to 68.5

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.020

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silicon (Si), %		0.1 to 0.3
Silicon (Si), %		6.0 to 8.0

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5