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ASTM A228 Music Wire vs. ASTM A372 Grade H Steel

Both ASTM A228 music wire and ASTM A372 grade H steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A228 music wire and the bottom bar is ASTM A372 grade H steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
20 to 22
Fatigue Strength, MPa 1280
310 to 380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 1470
410 to 570
Tensile Strength: Ultimate (UTS), MPa 2450
650 to 910
Tensile Strength: Yield (Proof), MPa 2050
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
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
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.3
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
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
130 to 160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 87
23 to 32
Strength to Weight: Bending, points 52
21 to 27
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 79
19 to 27

Alloy Composition

Carbon (C), % 0.7 to 1.0
0.3 to 0.4
Chromium (Cr), % 0
0.4 to 0.65
Iron (Fe), % 98 to 99
97.3 to 98.3
Manganese (Mn), % 0.2 to 0.6
0.75 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.015
Silicon (Si), % 0.1 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010