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Ductile Cast Iron vs. Grade CW2M Nickel

Ductile cast iron belongs to the iron alloys classification, while grade CW2M nickel belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is grade CW2M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
210
Elongation at Break, % 2.1 to 20
23
Poisson's Ratio 0.28 to 0.31
0.29
Shear Modulus, GPa 64 to 70
83
Tensile Strength: Ultimate (UTS), MPa 460 to 920
560
Tensile Strength: Yield (Proof), MPa 310 to 670
310

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 290
960
Melting Completion (Liquidus), °C 1160
1520
Melting Onset (Solidus), °C 1120
1460
Specific Heat Capacity, J/kg-K 490
430
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
70
Density, g/cm3 7.1 to 7.5
8.8
Embodied Carbon, kg CO2/kg material 1.5
12
Embodied Energy, MJ/kg 21
170
Embodied Water, L/kg 43
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
110
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
220
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
18
Strength to Weight: Bending, points 18 to 29
17
Thermal Shock Resistance, points 17 to 35
16

Alloy Composition

Carbon (C), % 3.0 to 3.5
0 to 0.020
Chromium (Cr), % 0
15 to 17.5
Iron (Fe), % 93.7 to 95.5
0 to 2.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
15 to 17.5
Nickel (Ni), % 0
60.1 to 70
Phosphorus (P), % 0 to 0.080
0 to 0.030
Silicon (Si), % 1.5 to 2.8
0 to 0.8
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
0 to 1.0