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C70700 Copper-nickel vs. EN 1.4305 Stainless Steel

C70700 copper-nickel belongs to the copper alloys classification, while EN 1.4305 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is EN 1.4305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
200 to 270
Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 39
14 to 40
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 46
77
Shear Strength, MPa 220
420 to 550
Tensile Strength: Ultimate (UTS), MPa 320
610 to 900
Tensile Strength: Yield (Proof), MPa 110
220 to 570

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
930
Melting Completion (Liquidus), °C 1120
1420
Melting Onset (Solidus), °C 1060
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 59
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
15
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
3.0
Embodied Energy, MJ/kg 52
42
Embodied Water, L/kg 300
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 51
120 to 830
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
22 to 32
Strength to Weight: Bending, points 12
20 to 27
Thermal Diffusivity, mm2/s 17
4.0
Thermal Shock Resistance, points 12
14 to 20

Alloy Composition

Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 88.5 to 90.5
0 to 1.0
Iron (Fe), % 0 to 0.050
66.4 to 74.9
Manganese (Mn), % 0 to 0.5
0 to 2.0
Nickel (Ni), % 9.5 to 10.5
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Residuals, % 0 to 0.5
0