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Grade 24 Titanium vs. ASTM A387 Grade 12 Steel

Grade 24 titanium belongs to the titanium alloys classification, while ASTM A387 grade 12 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11
25
Fatigue Strength, MPa 550
190 to 230
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Shear Strength, MPa 610
300 to 330
Tensile Strength: Ultimate (UTS), MPa 1010
470 to 520
Tensile Strength: Yield (Proof), MPa 940
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 340
430
Melting Completion (Liquidus), °C 1610
1470
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
44
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 43
1.6
Embodied Energy, MJ/kg 710
21
Embodied Water, L/kg 310
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
180 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 63
16 to 18
Strength to Weight: Bending, points 50
17 to 18
Thermal Diffusivity, mm2/s 2.9
12
Thermal Shock Resistance, points 72
14 to 15

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.050 to 0.17
Chromium (Cr), % 0
0.8 to 1.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
97 to 98.2
Manganese (Mn), % 0
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
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 0.025
Silicon (Si), % 0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0