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ASTM A387 Grade 22 Steel vs. ASTM A228 Music Wire

Both ASTM A387 grade 22 steel and ASTM A228 music wire are iron alloys. They have a very high 97% of their average alloy composition in common. 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 ASTM A387 grade 22 steel and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
710
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
12
Fatigue Strength, MPa 160 to 240
1280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
72
Shear Strength, MPa 300 to 380
1470
Tensile Strength: Ultimate (UTS), MPa 480 to 600
2450
Tensile Strength: Yield (Proof), MPa 230 to 350
2050

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 460
400
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.4
Embodied Energy, MJ/kg 23
19
Embodied Water, L/kg 58
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 110
280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 21
87
Strength to Weight: Bending, points 17 to 20
52
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 14 to 17
79

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.7 to 1.0
Chromium (Cr), % 2.0 to 2.5
0
Iron (Fe), % 95.1 to 96.8
98 to 99
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.6
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0.1 to 0.3
Sulfur (S), % 0 to 0.025
0 to 0.030