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C70700 Copper-nickel vs. ASTM A387 Grade 9 Steel

C70700 copper-nickel belongs to the copper alloys classification, while ASTM A387 grade 9 steel belongs to the iron alloys. There are 30 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 C70700 copper-nickel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 39
20 to 21
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 46
75
Shear Strength, MPa 220
310 to 380
Tensile Strength: Ultimate (UTS), MPa 320
500 to 600
Tensile Strength: Yield (Proof), MPa 110
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 220
270
Maximum Temperature: Mechanical, °C 220
600
Melting Completion (Liquidus), °C 1120
1460
Melting Onset (Solidus), °C 1060
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 59
26
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 34
6.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.1
Embodied Energy, MJ/kg 52
28
Embodied Water, L/kg 300
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 51
140 to 310
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
18 to 21
Strength to Weight: Bending, points 12
18 to 20
Thermal Diffusivity, mm2/s 17
6.9
Thermal Shock Resistance, points 12
14 to 17

Alloy Composition

Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
8.0 to 10
Copper (Cu), % 88.5 to 90.5
0
Iron (Fe), % 0 to 0.050
87.1 to 90.8
Manganese (Mn), % 0 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 9.5 to 10.5
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0 to 0.040
Residuals, % 0 to 0.5
0