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AISI 442 Stainless Steel vs. ASTM A228 Music Wire

Both AISI 442 stainless steel and ASTM A228 music wire are iron alloys. They have 79% 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 AISI 442 stainless steel and the bottom bar is ASTM A228 music wire.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
710
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
12
Fatigue Strength, MPa 210
1280
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
72
Shear Strength, MPa 370
1470
Tensile Strength: Ultimate (UTS), MPa 580
2450
Tensile Strength: Yield (Proof), MPa 310
2050

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 960
400
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 22
49
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.4
Embodied Energy, MJ/kg 32
19
Embodied Water, L/kg 130
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
87
Strength to Weight: Bending, points 20
52
Thermal Diffusivity, mm2/s 5.8
13
Thermal Shock Resistance, points 20
79

Alloy Composition

Carbon (C), % 0 to 0.2
0.7 to 1.0
Chromium (Cr), % 18 to 23
0
Iron (Fe), % 74.1 to 82
98 to 99
Manganese (Mn), % 0 to 1.0
0.2 to 0.6
Nickel (Ni), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.1 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.030