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ASTM A228 Music Wire vs. EN 1.7230 Steel

Both ASTM A228 music wire and EN 1.7230 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A228 music wire and the bottom bar is EN 1.7230 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
220 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
11 to 12
Fatigue Strength, MPa 1280
320 to 460
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 2450
720 to 910
Tensile Strength: Yield (Proof), MPa 2050
510 to 740

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49
44
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 45
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
79 to 97
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 87
26 to 32
Strength to Weight: Bending, points 52
23 to 27
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 79
21 to 27

Alloy Composition

Carbon (C), % 0.7 to 1.0
0.3 to 0.37
Chromium (Cr), % 0
0.8 to 1.2
Iron (Fe), % 98 to 99
96.7 to 98.3
Manganese (Mn), % 0.2 to 0.6
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.1 to 0.3
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030