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Grade 24 Titanium vs. SAE-AISI M4 Steel

Grade 24 titanium belongs to the titanium alloys classification, while SAE-AISI M4 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 1010
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Melting Completion (Liquidus), °C 1610
1610
Melting Onset (Solidus), °C 1560
1560
Specific Heat Capacity, J/kg-K 560
440
Thermal Conductivity, W/m-K 7.1
25
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.3
Embodied Carbon, kg CO2/kg material 43
14
Embodied Energy, MJ/kg 710
210
Embodied Water, L/kg 310
110

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 63
26 to 72
Strength to Weight: Bending, points 50
23 to 45
Thermal Diffusivity, mm2/s 2.9
6.9
Thermal Shock Resistance, points 72
24 to 68

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
75.9 to 81.4
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
Nickel (Ni), % 0
0 to 0.3
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 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.5 to 91
0
Tungsten (W), % 0
5.3 to 6.5
Vanadium (V), % 3.5 to 4.5
3.8 to 4.5
Residuals, % 0 to 0.4
0