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C71500 Copper-nickel vs. S33550 Stainless Steel

C71500 copper-nickel belongs to the copper alloys classification, while S33550 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C71500 copper-nickel and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Poisson's Ratio 0.33
0.27
Rockwell B Hardness 40 to 89
82
Shear Modulus, GPa 52
79
Tensile Strength: Ultimate (UTS), MPa 380 to 620
680

Thermal Properties

Latent Heat of Fusion, J/g 230
300
Maximum Temperature: Mechanical, °C 260
1100
Melting Completion (Liquidus), °C 1240
1400
Melting Onset (Solidus), °C 1170
1360
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 28
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 4.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 41
24
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
4.3
Embodied Energy, MJ/kg 74
61
Embodied Water, L/kg 280
190

Common Calculations

Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 12 to 19
24
Strength to Weight: Bending, points 13 to 18
22
Thermal Diffusivity, mm2/s 7.7
3.9
Thermal Shock Resistance, points 12 to 20
15

Alloy Composition

Carbon (C), % 0
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 0
25 to 28
Copper (Cu), % 63.5 to 70.6
0
Iron (Fe), % 0.4 to 1.0
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0 to 1.5
Nickel (Ni), % 29 to 33
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0