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ASTM A228 Music Wire vs. ASTM A182 Grade F6b

Both ASTM A228 music wire and ASTM A182 grade F6b are iron alloys. They have 85% of their average alloy composition in common. There are 30 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 A228 music wire and the bottom bar is ASTM A182 grade F6b.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
260
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
18
Fatigue Strength, MPa 1280
440
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1470
530
Tensile Strength: Ultimate (UTS), MPa 2450
850
Tensile Strength: Yield (Proof), MPa 2050
710

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 49
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
8.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.2
Embodied Energy, MJ/kg 19
30
Embodied Water, L/kg 45
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 87
30
Strength to Weight: Bending, points 52
26
Thermal Diffusivity, mm2/s 13
6.7
Thermal Shock Resistance, points 79
31

Alloy Composition

Carbon (C), % 0.7 to 1.0
0 to 0.15
Chromium (Cr), % 0
11.5 to 13.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 98 to 99
81.2 to 87.1
Manganese (Mn), % 0.2 to 0.6
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0
1.0 to 2.0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.1 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020