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EN 1.1118 Cast Steel vs. Grade 31 Titanium

EN 1.1118 cast steel belongs to the iron alloys classification, while grade 31 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.1118 cast steel and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 21
20
Fatigue Strength, MPa 320 to 400
300
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 700 to 750
510
Tensile Strength: Yield (Proof), MPa 460 to 630
450

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 51
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
36
Embodied Energy, MJ/kg 19
600
Embodied Water, L/kg 48
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 130
99
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 1050
940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 25 to 27
32
Strength to Weight: Bending, points 22 to 23
32
Thermal Diffusivity, mm2/s 14
8.5
Thermal Shock Resistance, points 22 to 24
39

Alloy Composition

Carbon (C), % 0.2 to 0.25
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.3 to 98.3
0 to 0.3
Manganese (Mn), % 1.5 to 1.8
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
97.9 to 99.76
Residuals, % 0
0 to 0.4