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Grade 24 Titanium vs. ACI-ASTM CA15M Steel

Grade 24 titanium belongs to the titanium alloys classification, while ACI-ASTM CA15M steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
20
Fatigue Strength, MPa 550
330
Poisson's Ratio 0.32
0.28
Reduction in Area, % 28
34
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 1010
690
Tensile Strength: Yield (Proof), MPa 940
510

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 340
760
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1410
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
27
Thermal Expansion, µm/m-K 9.6
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.5

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 43
2.1
Embodied Energy, MJ/kg 710
29
Embodied Water, L/kg 310
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
670
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
25
Strength to Weight: Bending, points 50
22
Thermal Diffusivity, mm2/s 2.9
7.2
Thermal Shock Resistance, points 72
25

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 0
11.5 to 14
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
82.1 to 88.4
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.65
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0