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EN 1.4958 Stainless Steel vs. C71580 Copper-nickel

EN 1.4958 stainless steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 40
40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
51
Shear Strength, MPa 430
230
Tensile Strength: Ultimate (UTS), MPa 630
330
Tensile Strength: Yield (Proof), MPa 190
110

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Maximum Temperature: Mechanical, °C 1090
260
Melting Completion (Liquidus), °C 1400
1180
Melting Onset (Solidus), °C 1350
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 30
41
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 5.3
5.1
Embodied Energy, MJ/kg 75
74
Embodied Water, L/kg 200
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
100
Resilience: Unit (Modulus of Resilience), kJ/m3 95
47
Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 22
10
Strength to Weight: Bending, points 20
12
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 15
11

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.070
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
65.5 to 71
Iron (Fe), % 41.1 to 50.6
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.5
0 to 0.3
Nickel (Ni), % 30 to 32.5
29 to 33
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.2 to 0.5
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5