MakeItFrom.com
Menu (ESC)

Grade 20 Cast Iron vs. Nickel 686

Grade 20 cast iron belongs to the iron alloys classification, while nickel 686 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 grade 20 cast iron and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220
Elongation at Break, % 9.6
51
Fatigue Strength, MPa 69
410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 69
77
Shear Strength, MPa 180
560
Tensile Strength: Ultimate (UTS), MPa 160
780
Tensile Strength: Yield (Proof), MPa 98
350

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1380
1380
Melting Onset (Solidus), °C 1180
1340
Specific Heat Capacity, J/kg-K 490
420
Thermal Conductivity, W/m-K 46
9.8
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
70
Density, g/cm3 7.5
9.0
Embodied Carbon, kg CO2/kg material 1.5
12
Embodied Energy, MJ/kg 21
170
Embodied Water, L/kg 44
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
320
Resilience: Unit (Modulus of Resilience), kJ/m3 27
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 5.8
24
Strength to Weight: Bending, points 8.7
21
Thermal Diffusivity, mm2/s 13
2.6
Thermal Shock Resistance, points 6.0
21

Alloy Composition

Carbon (C), % 3.1 to 3.4
0 to 0.010
Chromium (Cr), % 0
19 to 23
Iron (Fe), % 92.1 to 93.9
0 to 5.0
Manganese (Mn), % 0.5 to 0.7
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0
49.5 to 63
Phosphorus (P), % 0 to 0.9
0 to 0.040
Silicon (Si), % 2.5 to 2.8
0 to 0.080
Sulfur (S), % 0 to 0.15
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4