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ASTM Grade HF Steel vs. ASTM A228 Music Wire

Both ASTM grade HF steel and ASTM A228 music wire are iron alloys. They have 68% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
710
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
12
Fatigue Strength, MPa 200
1280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 550
2450
Tensile Strength: Yield (Proof), MPa 270
2050

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
49
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 17
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.4
Embodied Energy, MJ/kg 46
19
Embodied Water, L/kg 150
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
87
Strength to Weight: Bending, points 19
52
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 12
79

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.7 to 1.0
Chromium (Cr), % 18 to 23
0
Iron (Fe), % 60 to 73.8
98 to 99
Manganese (Mn), % 0 to 2.0
0.2 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0.1 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.030