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SAE-AISI 8740 Steel vs. C96200 Copper-nickel

SAE-AISI 8740 steel belongs to the iron alloys classification, while C96200 copper-nickel belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8740 steel and the bottom bar is C96200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 11 to 23
23
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
46
Tensile Strength: Ultimate (UTS), MPa 580 to 670
350
Tensile Strength: Yield (Proof), MPa 380 to 570
190

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 410
220
Melting Completion (Liquidus), °C 1460
1150
Melting Onset (Solidus), °C 1420
1100
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 39
45
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
36
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.5
3.8
Embodied Energy, MJ/kg 20
58
Embodied Water, L/kg 50
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
68
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 850
150
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 20 to 24
11
Strength to Weight: Bending, points 20 to 22
13
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 17 to 20
12

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.1
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0
83.6 to 90
Iron (Fe), % 96.5 to 97.7
1.0 to 1.8
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 0.75 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 0.4 to 0.7
9.0 to 11
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.020
Residuals, % 0
0 to 0.5