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ASTM Grade HK Steel vs. ASTM A228 Music Wire

Both ASTM grade HK steel and ASTM A228 music wire are iron alloys. They have 52% 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 HK steel and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
710
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
12
Fatigue Strength, MPa 150
1280
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 500
2450
Tensile Strength: Yield (Proof), MPa 270
2050

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
49
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 25
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 63
19
Embodied Water, L/kg 200
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
87
Strength to Weight: Bending, points 18
52
Thermal Diffusivity, mm2/s 3.9
13
Thermal Shock Resistance, points 11
79

Alloy Composition

Carbon (C), % 0.2 to 0.6
0.7 to 1.0
Chromium (Cr), % 24 to 28
0
Iron (Fe), % 44.8 to 57.8
98 to 99
Manganese (Mn), % 0 to 2.0
0.2 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
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