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EN 1.7720 Steel vs. C74500 Nickel Silver

EN 1.7720 steel belongs to the iron alloys classification, while C74500 nickel silver belongs to the copper alloys. There are 28 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 1.7720 steel and the bottom bar is C74500 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 19
3.0 to 24
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
44
Tensile Strength: Ultimate (UTS), MPa 590
390 to 700
Tensile Strength: Yield (Proof), MPa 340
380 to 600

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1470
1020
Melting Onset (Solidus), °C 1430
970
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 40
45
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
29
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 2.2
3.4
Embodied Energy, MJ/kg 30
54
Embodied Water, L/kg 51
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
12 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 300
620 to 1540
Stiffness to Weight: Axial, points 13
7.7
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21
13 to 23
Strength to Weight: Bending, points 20
14 to 21
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 17
13 to 23

Alloy Composition

Carbon (C), % 0.1 to 0.15
0
Chromium (Cr), % 0.3 to 0.5
0
Copper (Cu), % 0 to 0.3
63.5 to 66.5
Iron (Fe), % 96.6 to 98.6
0 to 0.25
Lead (Pb), % 0
0 to 0.1
Manganese (Mn), % 0.4 to 0.7
0 to 0.5
Molybdenum (Mo), % 0.4 to 0.6
0
Nickel (Ni), % 0 to 0.4
9.0 to 11
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.45
0
Sulfur (S), % 0 to 0.020
0
Vanadium (V), % 0.22 to 0.3
0
Zinc (Zn), % 0
21.2 to 27.5
Residuals, % 0
0 to 0.5