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EN 1.4640 Stainless Steel vs. C72200 Copper-nickel

EN 1.4640 stainless steel belongs to the iron alloys classification, while C72200 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
48
Tensile Strength: Ultimate (UTS), MPa 620 to 650
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 280
220
Maximum Temperature: Mechanical, °C 930
230
Melting Completion (Liquidus), °C 1420
1180
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 15
34
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
36
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.8
3.9
Embodied Energy, MJ/kg 40
59
Embodied Water, L/kg 150
300

Common Calculations

Stiffness to Weight: Axial, points 14
8.0
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22 to 23
11 to 18
Strength to Weight: Bending, points 21
12 to 17
Thermal Diffusivity, mm2/s 4.0
9.6
Thermal Shock Resistance, points 14 to 15
12 to 20

Alloy Composition

Carbon (C), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 19
0.3 to 0.7
Copper (Cu), % 1.3 to 2.0
78.1 to 84.2
Iron (Fe), % 67.4 to 73.6
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 1.5 to 4.0
0 to 1.0
Nickel (Ni), % 5.5 to 6.9
15 to 18
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.2