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Grade 20 Cast Iron vs. EN 2.4889 Nickel

Grade 20 cast iron belongs to the iron alloys classification, while EN 2.4889 nickel belongs to the nickel alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 EN 2.4889 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 9.6
39
Fatigue Strength, MPa 69
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
77
Shear Strength, MPa 180
490
Tensile Strength: Ultimate (UTS), MPa 160
720
Tensile Strength: Yield (Proof), MPa 98
270

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Melting Completion (Liquidus), °C 1380
1350
Melting Onset (Solidus), °C 1180
1300
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 46
13
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
42
Density, g/cm3 7.5
8.0
Embodied Carbon, kg CO2/kg material 1.5
6.9
Embodied Energy, MJ/kg 21
98
Embodied Water, L/kg 44
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
220
Resilience: Unit (Modulus of Resilience), kJ/m3 27
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 5.8
25
Strength to Weight: Bending, points 8.7
22
Thermal Diffusivity, mm2/s 13
3.4
Thermal Shock Resistance, points 6.0
19

Alloy Composition

Carbon (C), % 3.1 to 3.4
0.050 to 0.12
Cerium (Ce), % 0
0.030 to 0.090
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 92.1 to 93.9
21 to 25
Manganese (Mn), % 0.5 to 0.7
0 to 1.0
Nickel (Ni), % 0
45 to 50.4
Phosphorus (P), % 0 to 0.9
0 to 0.020
Silicon (Si), % 2.5 to 2.8
2.5 to 3.0
Sulfur (S), % 0 to 0.15
0 to 0.010