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EN 1.4971 Stainless Steel vs. C71580 Copper-nickel

EN 1.4971 stainless steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
75
Elastic (Young's, Tensile) Modulus, GPa 210
140
Elongation at Break, % 34
40
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
51
Shear Strength, MPa 530
230
Tensile Strength: Ultimate (UTS), MPa 800
330
Tensile Strength: Yield (Proof), MPa 340
110

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1460
1180
Melting Onset (Solidus), °C 1410
1120
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
39
Thermal Expansion, µm/m-K 15
15

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

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
100
Resilience: Unit (Modulus of Resilience), kJ/m3 280
47
Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 26
10
Strength to Weight: Bending, points 23
12
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
11

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.070
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
65.5 to 71
Iron (Fe), % 24.3 to 37.1
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.3
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 0.050
Residuals, % 0
0 to 0.5