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SAE-AISI A9 Steel vs. C71500 Copper-nickel

SAE-AISI A9 steel belongs to the iron alloys classification, while C71500 copper-nickel belongs to the copper alloys. There are 23 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 SAE-AISI A9 steel and the bottom bar is C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 74
52
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 280
230
Melting Completion (Liquidus), °C 1460
1240
Melting Onset (Solidus), °C 1410
1170
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 35
28
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
41
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.7
5.1
Embodied Energy, MJ/kg 70
74
Embodied Water, L/kg 82
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 28 to 73
12 to 19
Strength to Weight: Bending, points 24 to 46
13 to 18
Thermal Diffusivity, mm2/s 9.6
7.7
Thermal Shock Resistance, points 25 to 66
12 to 20

Alloy Composition

Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
63.5 to 70.6
Iron (Fe), % 87 to 90.5
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
29 to 33
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 1.2
0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5