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Austenitic Grey Cast Iron vs. Grade 5 Titanium

Austenitic grey cast iron belongs to the iron alloys classification, while grade 5 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is austenitic grey cast iron and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
110
Poisson's Ratio 0.29 to 0.3
0.32
Shear Modulus, GPa 69 to 72
40
Tensile Strength: Ultimate (UTS), MPa 150 to 230
1000 to 1190

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
410
Melting Completion (Liquidus), °C 1340 to 1400
1610
Melting Onset (Solidus), °C 1290 to 1350
1650
Specific Heat Capacity, J/kg-K 470 to 490
560
Thermal Expansion, µm/m-K 13 to 14
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14 to 24
36
Density, g/cm3 7.7 to 8.1
4.4
Embodied Carbon, kg CO2/kg material 3.1 to 4.7
38
Embodied Energy, MJ/kg 43 to 65
610
Embodied Water, L/kg 93 to 120
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23 to 25
35
Strength to Weight: Axial, points 5.3 to 8.2
62 to 75
Strength to Weight: Bending, points 7.9 to 11
50 to 56
Thermal Shock Resistance, points 4.5 to 6.5
76 to 91