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AWS E309Nb vs. C71520 Copper-nickel

AWS E309Nb belongs to the iron alloys classification, while C71520 copper-nickel belongs to the copper alloys. There are 24 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 AWS E309Nb and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 34
10 to 45
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
51
Tensile Strength: Ultimate (UTS), MPa 620
370 to 570

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Melting Completion (Liquidus), °C 1420
1170
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 15
32
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
5.8

Otherwise Unclassified Properties

Base Metal Price, % relative 25
40
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.4
5.0
Embodied Energy, MJ/kg 64
73
Embodied Water, L/kg 180
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22
12 to 18
Strength to Weight: Bending, points 21
13 to 17
Thermal Diffusivity, mm2/s 4.0
8.9
Thermal Shock Resistance, points 16
12 to 19

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.050
Chromium (Cr), % 22 to 25
0
Copper (Cu), % 0 to 0.75
65 to 71.6
Iron (Fe), % 54.8 to 64.8
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0.5 to 2.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
28 to 33
Niobium (Nb), % 0.7 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.2
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.020
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5