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C70700 Copper-nickel vs. ASTM A356 Grade 8

C70700 copper-nickel belongs to the copper alloys classification, while ASTM A356 grade 8 belongs to the iron alloys. There are 29 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 C70700 copper-nickel and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
190
Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 39
21
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 46
73
Tensile Strength: Ultimate (UTS), MPa 320
630
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 220
260
Maximum Temperature: Mechanical, °C 220
440
Melting Completion (Liquidus), °C 1120
1470
Melting Onset (Solidus), °C 1060
1430
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 59
38
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 34
3.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.0
Embodied Energy, MJ/kg 52
26
Embodied Water, L/kg 300
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 51
390
Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 10
22
Strength to Weight: Bending, points 12
21
Thermal Diffusivity, mm2/s 17
10
Thermal Shock Resistance, points 12
18

Alloy Composition

Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
1.0 to 1.5
Copper (Cu), % 88.5 to 90.5
0
Iron (Fe), % 0 to 0.050
95.4 to 97.4
Manganese (Mn), % 0 to 0.5
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 9.5 to 10.5
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.2 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15
Residuals, % 0 to 0.5
0