ASTM A228 Music Wire vs. Grade 364 Molybdenum

ASTM A228 music wire belongs to the iron alloys classification, while grade 364 molybdenum belongs to the otherwise unclassified metals. 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 grade 364 molybdenum.

ASTM A228 (SWP-A, K08500) Music Wire Grade 364 Molybdenum

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		310

Elongation at Break, %		12
Elongation at Break, %		6.2 to 11

Poisson's Ratio		0.29
Poisson's Ratio		0.31

Shear Modulus, GPa		72
Shear Modulus, GPa		120

Tensile Strength: Ultimate (UTS), MPa		2450
Tensile Strength: Ultimate (UTS), MPa		580 to 720

Tensile Strength: Yield (Proof), MPa		2050
Tensile Strength: Yield (Proof), MPa		350 to 620

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		370

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		250

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		7.0

Otherwise Unclassified Properties

Density, g/cm³		7.8
Density, g/cm³		10

Embodied Carbon, kg CO₂/kg material		1.4
Embodied Carbon, kg CO₂/kg material		28

Embodied Energy, MJ/kg		19
Embodied Energy, MJ/kg		330

Embodied Water, L/kg		45
Embodied Water, L/kg		360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		280
Resilience: Ultimate (Unit Rupture Work), MJ/m³		43 to 57

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		17

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		87
Strength to Weight: Axial, points		16 to 20

Strength to Weight: Bending, points		52
Strength to Weight: Bending, points		15 to 17

Thermal Shock Resistance, points		79
Thermal Shock Resistance, points		19 to 24

Alloy Composition

Carbon (C), %		0.7 to 1.0
Carbon (C), %		0.010 to 0.040

Iron (Fe), %		98 to 99
Iron (Fe), %		0 to 0.010

Manganese (Mn), %		0.2 to 0.6
Manganese (Mn), %		0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		99.2 to 99.5

Nickel (Ni), %		0
Nickel (Ni), %		0 to 0.0050

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.0020

Oxygen (O), %		0
Oxygen (O), %		0 to 0.030

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

Silicon (Si), %		0.1 to 0.3
Silicon (Si), %		0 to 0.0050

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

Titanium (Ti), %		0
Titanium (Ti), %		0.4 to 0.55

Zirconium (Zr), %		0
Zirconium (Zr), %		0.060 to 0.12