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Automotive Malleable Cast Iron vs. Nickel 684

Automotive malleable cast iron belongs to the iron alloys classification, while nickel 684 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 automotive malleable cast iron and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 290
310
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.0 to 10
11
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 70
76
Tensile Strength: Ultimate (UTS), MPa 350 to 720
1190
Tensile Strength: Yield (Proof), MPa 220 to 590
800

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1410
1370
Melting Onset (Solidus), °C 1370
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
75
Density, g/cm3 7.6
8.3
Embodied Carbon, kg CO2/kg material 1.5
10
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 45
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
120
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
1610
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 13 to 26
40
Strength to Weight: Bending, points 14 to 24
30
Thermal Shock Resistance, points 9.9 to 21
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 2.2 to 2.9
0 to 0.15
Chromium (Cr), % 0
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 93.6 to 96.7
0 to 4.0
Manganese (Mn), % 0.15 to 1.3
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0
42.7 to 64
Phosphorus (P), % 0.020 to 0.15
0 to 0.015
Silicon (Si), % 0.9 to 1.9
0 to 0.75
Sulfur (S), % 0.020 to 0.2
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3