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C72700 Copper-nickel vs. AISI 204 Stainless Steel

C72700 copper-nickel belongs to the copper alloys classification, while AISI 204 stainless steel 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 C72700 copper-nickel and the bottom bar is AISI 204 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 4.0 to 36
23 to 39
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
77
Shear Strength, MPa 310 to 620
500 to 700
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
730 to 1100
Tensile Strength: Yield (Proof), MPa 580 to 1060
380 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
850
Melting Completion (Liquidus), °C 1100
1410
Melting Onset (Solidus), °C 930
1370
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 54
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 8.8
7.7
Embodied Carbon, kg CO2/kg material 4.0
2.4
Embodied Energy, MJ/kg 62
35
Embodied Water, L/kg 350
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 380
240 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 1420 to 4770
360 to 2940
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 14 to 34
27 to 40
Strength to Weight: Bending, points 15 to 26
24 to 31
Thermal Diffusivity, mm2/s 16
4.1
Thermal Shock Resistance, points 16 to 38
16 to 24

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 82.1 to 86
0
Iron (Fe), % 0 to 0.5
69.6 to 76.4
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
7.0 to 9.0
Nickel (Ni), % 8.5 to 9.5
1.5 to 3.0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 6.5
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0