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Ductile Cast Iron vs. Nickel 625

Ductile cast iron belongs to the iron alloys classification, while nickel 625 belongs to the nickel alloys. 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 ductile cast iron and the bottom bar is nickel 625.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
200
Elongation at Break, % 2.1 to 20
33 to 34
Poisson's Ratio 0.28 to 0.31
0.29
Shear Modulus, GPa 64 to 70
79
Shear Strength, MPa 420 to 800
530 to 600
Tensile Strength: Ultimate (UTS), MPa 460 to 920
790 to 910
Tensile Strength: Yield (Proof), MPa 310 to 670
320 to 450

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 290
980
Melting Completion (Liquidus), °C 1160
1350
Melting Onset (Solidus), °C 1120
1290
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 31 to 36
11
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
80
Density, g/cm3 7.1 to 7.5
8.6
Embodied Carbon, kg CO2/kg material 1.5
14
Embodied Energy, MJ/kg 21
190
Embodied Water, L/kg 43
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
220 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
260 to 490
Stiffness to Weight: Axial, points 12 to 14
13
Stiffness to Weight: Bending, points 24 to 26
23
Strength to Weight: Axial, points 17 to 35
26 to 29
Strength to Weight: Bending, points 18 to 29
22 to 24
Thermal Diffusivity, mm2/s 8.9 to 10
2.9
Thermal Shock Resistance, points 17 to 35
22 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 3.0 to 3.5
0 to 0.1
Chromium (Cr), % 0
20 to 23
Cobalt (Co), % 0
0 to 1.0
Iron (Fe), % 93.7 to 95.5
0 to 5.0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
58 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0 to 0.080
0 to 0.015
Silicon (Si), % 1.5 to 2.8
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 0.4

Comparable Variants