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Automotive Grey Cast Iron vs. Type 4 Magnetic Alloy

Automotive grey cast iron belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. There are 25 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 automotive grey cast iron and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 9.6 to 14
2.0 to 40
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 69 to 70
73
Tensile Strength: Ultimate (UTS), MPa 140 to 290
620 to 1100
Tensile Strength: Yield (Proof), MPa 94 to 200
270 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
290
Melting Completion (Liquidus), °C 1380 to 1390
1420
Melting Onset (Solidus), °C 1340 to 1350
1370
Specific Heat Capacity, J/kg-K 490
440
Thermal Expansion, µm/m-K 12 to 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
60
Density, g/cm3 7.5 to 7.6
8.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
10
Embodied Energy, MJ/kg 21 to 24
140
Embodied Water, L/kg 44 to 51
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
22 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
190 to 2840
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 5.2 to 11
19 to 35
Strength to Weight: Bending, points 8.0 to 13
18 to 27
Thermal Shock Resistance, points 4.2 to 8.6
21 to 37