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EN 1.4971 Stainless Steel vs. C71520 Copper-nickel

EN 1.4971 stainless steel belongs to the iron alloys classification, while C71520 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 27 material properties with values for both materials. Properties with values for just one material (7, 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 C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
140
Elongation at Break, % 34
10 to 45
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
51
Shear Strength, MPa 530
250 to 340
Tensile Strength: Ultimate (UTS), MPa 800
370 to 570
Tensile Strength: Yield (Proof), MPa 340
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1460
1170
Melting Onset (Solidus), °C 1410
1120
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
32
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
40
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 7.6
5.0
Embodied Energy, MJ/kg 110
73
Embodied Water, L/kg 300
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 280
67 to 680
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 26
12 to 18
Strength to Weight: Bending, points 23
13 to 17
Thermal Diffusivity, mm2/s 3.4
8.9
Thermal Shock Resistance, points 19
12 to 19

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
65 to 71.6
Iron (Fe), % 24.3 to 37.1
0.4 to 1.0
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
28 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 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