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EN 1.4971 Stainless Steel vs. C71500 Copper-nickel

EN 1.4971 stainless steel belongs to the iron alloys classification, while C71500 copper-nickel belongs to the copper alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (13, 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 C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
52
Tensile Strength: Ultimate (UTS), MPa 800
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1460
1240
Melting Onset (Solidus), °C 1410
1170
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
28
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
41
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 7.6
5.1
Embodied Energy, MJ/kg 110
74
Embodied Water, L/kg 300
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 26
12 to 19
Strength to Weight: Bending, points 23
13 to 18
Thermal Diffusivity, mm2/s 3.4
7.7
Thermal Shock Resistance, points 19
12 to 20

Alloy Composition

Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
63.5 to 70.6
Iron (Fe), % 24.3 to 37.1
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
29 to 33
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.0 to 3.0
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5