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EN 1.4971 Stainless Steel vs. C70620 Copper-nickel

EN 1.4971 stainless steel belongs to the iron alloys classification, while C70620 copper-nickel belongs to the copper alloys. There are 22 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 1.4971 stainless steel and the bottom bar is C70620 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
46
Tensile Strength: Ultimate (UTS), MPa 800
300 to 570

Thermal Properties

Latent Heat of Fusion, J/g 300
220
Maximum Temperature: Mechanical, °C 1100
220
Melting Completion (Liquidus), °C 1460
1120
Melting Onset (Solidus), °C 1410
1060
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
49
Thermal Expansion, µm/m-K 15
17

Otherwise Unclassified Properties

Base Metal Price, % relative 70
33
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 7.6
3.4
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 300
300

Common Calculations

Stiffness to Weight: Axial, points 14
7.7
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 26
9.3 to 18
Strength to Weight: Bending, points 23
11 to 17
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 19
10 to 20

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.050
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
86.5 to 90
Iron (Fe), % 24.3 to 37.1
1.0 to 1.8
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
9.0 to 11
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.2
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 2.0 to 3.0
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5