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EN 1.4318 Stainless Steel vs. C71640 Copper-nickel

EN 1.4318 stainless steel belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4318 stainless steel and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
52
Tensile Strength: Ultimate (UTS), MPa 740
490 to 630
Tensile Strength: Yield (Proof), MPa 380
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 910
260
Melting Completion (Liquidus), °C 1430
1180
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 15
29
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
40
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.8
5.0
Embodied Energy, MJ/kg 39
73
Embodied Water, L/kg 130
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 360
130 to 750
Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 27
15 to 20
Strength to Weight: Bending, points 23
16 to 18
Thermal Diffusivity, mm2/s 4.0
8.2
Thermal Shock Resistance, points 17
16 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 0
61.7 to 67.8
Iron (Fe), % 70.2 to 77.4
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
1.5 to 2.5
Nickel (Ni), % 6.0 to 8.0
29 to 32
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5