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EN 1.1181 Steel vs. ASTM A228 Music Wire

Both EN 1.1181 steel and ASTM A228 music wire are iron alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.1181 steel and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
710
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 20
12
Fatigue Strength, MPa 190 to 260
1280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 350 to 390
1470
Tensile Strength: Ultimate (UTS), MPa 560 to 620
2450
Tensile Strength: Yield (Proof), MPa 280 to 380
2050

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 42
49
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 22
87
Strength to Weight: Bending, points 19 to 21
52
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 19 to 21
79

Alloy Composition

Carbon (C), % 0.32 to 0.39
0.7 to 1.0
Chromium (Cr), % 0 to 0.4
0
Iron (Fe), % 97.4 to 99.18
98 to 99
Manganese (Mn), % 0.5 to 0.8
0.2 to 0.6
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0.1 to 0.3
Sulfur (S), % 0 to 0.035
0 to 0.030