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SAE-AISI 5120 Steel vs. C72700 Copper-nickel

SAE-AISI 5120 steel belongs to the iron alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5120 steel and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 16
4.0 to 36
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
44
Shear Strength, MPa 310
310 to 620
Tensile Strength: Ultimate (UTS), MPa 500
460 to 1070
Tensile Strength: Yield (Proof), MPa 320
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 420
200
Melting Completion (Liquidus), °C 1460
1100
Melting Onset (Solidus), °C 1420
930
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 47
54
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
36
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 1.4
4.0
Embodied Energy, MJ/kg 19
62
Embodied Water, L/kg 49
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1420 to 4770
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 18
14 to 34
Strength to Weight: Bending, points 18
15 to 26
Thermal Diffusivity, mm2/s 13
16
Thermal Shock Resistance, points 16
16 to 38

Alloy Composition


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Carbon (C), % 0.17 to 0.22
0
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
82.1 to 86
Iron (Fe), % 97.6 to 98.3
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0.7 to 0.9
0.050 to 0.3
Nickel (Ni), % 0
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3