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EN 1.7725 Steel vs. C72500 Copper-nickel

EN 1.7725 steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
45
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 440
210
Melting Completion (Liquidus), °C 1460
1130
Melting Onset (Solidus), °C 1420
1060
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 39
54
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
35
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.8
3.6
Embodied Energy, MJ/kg 24
55
Embodied Water, L/kg 54
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 29 to 35
13 to 24
Strength to Weight: Bending, points 25 to 28
14 to 21
Thermal Diffusivity, mm2/s 11
16
Thermal Shock Resistance, points 24 to 29
14 to 27

Alloy Composition

Carbon (C), % 0.27 to 0.34
0
Chromium (Cr), % 1.3 to 1.7
0
Copper (Cu), % 0
85.2 to 89.7
Iron (Fe), % 95.7 to 97.5
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.6 to 1.0
0 to 0.2
Molybdenum (Mo), % 0.3 to 0.5
0
Nickel (Ni), % 0
8.5 to 10.5
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.8 to 2.8
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2

Comparable Variants