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C72700 Copper-nickel vs. ASTM Grade LCB Steel

C72700 copper-nickel belongs to the copper alloys classification, while ASTM grade LCB steel belongs to the iron 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 C72700 copper-nickel and the bottom bar is ASTM grade LCB steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 4.0 to 36
27
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
72
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
540
Tensile Strength: Yield (Proof), MPa 580 to 1060
270

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1100
1450
Melting Onset (Solidus), °C 930
1410
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 54
51
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 4.0
1.4
Embodied Energy, MJ/kg 62
18
Embodied Water, L/kg 350
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 380
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1420 to 4770
200
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 14 to 34
19
Strength to Weight: Bending, points 15 to 26
19
Thermal Diffusivity, mm2/s 16
14
Thermal Shock Resistance, points 16 to 38
17

Alloy Composition

Carbon (C), % 0
0 to 0.3
Copper (Cu), % 82.1 to 86
0
Iron (Fe), % 0 to 0.5
97 to 100
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 1.0
Nickel (Ni), % 8.5 to 9.5
0
Niobium (Nb), % 0 to 0.1
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.045
Tin (Sn), % 5.5 to 6.5
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0
0 to 1.0