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Ductile Cast Iron vs. Nickel 689

Ductile cast iron belongs to the iron alloys classification, while nickel 689 belongs to the nickel alloys. There are 26 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 ductile cast iron and the bottom bar is nickel 689.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
350
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
80
Shear Strength, MPa 420 to 800
790
Tensile Strength: Ultimate (UTS), MPa 460 to 920
1250
Tensile Strength: Yield (Proof), MPa 310 to 670
690

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 290
990
Melting Completion (Liquidus), °C 1160
1440
Melting Onset (Solidus), °C 1120
1390
Specific Heat Capacity, J/kg-K 490
450
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
8.5
Embodied Carbon, kg CO2/kg material 1.5
11
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 43
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
240
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
1170
Stiffness to Weight: Axial, points 12 to 14
14
Stiffness to Weight: Bending, points 24 to 26
23
Strength to Weight: Axial, points 17 to 35
41
Strength to Weight: Bending, points 18 to 29
30
Thermal Shock Resistance, points 17 to 35
35

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 3.0 to 3.5
0.1 to 0.2
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
9.0 to 11
Iron (Fe), % 93.7 to 95.5
0 to 5.0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
48.3 to 60.9
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
2.3 to 2.8