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Grade 24 Titanium vs. ACI-ASTM CN7MS Steel

Grade 24 titanium belongs to the titanium alloys classification, while ACI-ASTM CN7MS steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
39
Fatigue Strength, MPa 550
200
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 1010
540
Tensile Strength: Yield (Proof), MPa 940
230

Thermal Properties

Latent Heat of Fusion, J/g 410
340
Maximum Temperature: Mechanical, °C 340
1040
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1560
1350
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
12
Thermal Expansion, µm/m-K 9.6
16

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 43
5.1
Embodied Energy, MJ/kg 710
71
Embodied Water, L/kg 310
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
19
Strength to Weight: Bending, points 50
19
Thermal Diffusivity, mm2/s 2.9
3.2
Thermal Shock Resistance, points 72
13

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0
1.5 to 2.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
45.4 to 53.5
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
22 to 25
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
2.5 to 3.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0