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C71520 Copper-nickel vs. S17700 Stainless Steel

C71520 copper-nickel belongs to the copper alloys classification, while S17700 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C71520 copper-nickel and the bottom bar is S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 10 to 45
1.0 to 23
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 51
76
Shear Strength, MPa 250 to 340
740 to 940
Tensile Strength: Ultimate (UTS), MPa 370 to 570
1180 to 1650
Tensile Strength: Yield (Proof), MPa 140 to 430
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 230
290
Maximum Temperature: Mechanical, °C 260
890
Melting Completion (Liquidus), °C 1170
1440
Melting Onset (Solidus), °C 1120
1400
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 32
15
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 5.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 40
13
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 5.0
2.8
Embodied Energy, MJ/kg 73
40
Embodied Water, L/kg 280
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54 to 130
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 67 to 680
460 to 3750
Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 12 to 18
42 to 59
Strength to Weight: Bending, points 13 to 17
32 to 40
Thermal Diffusivity, mm2/s 8.9
4.1
Thermal Shock Resistance, points 12 to 19
39 to 54

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.050
0 to 0.090
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 65 to 71.6
0
Iron (Fe), % 0.4 to 1.0
70.5 to 76.8
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 28 to 33
6.5 to 7.8
Phosphorus (P), % 0 to 0.2
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.5
0