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Grade 9 Titanium vs. ACI-ASTM CB6 Steel

Grade 9 titanium belongs to the titanium alloys classification, while ACI-ASTM CB6 steel belongs to the iron alloys. There are 30 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 grade 9 titanium and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11 to 17
18
Fatigue Strength, MPa 330 to 480
410
Poisson's Ratio 0.32
0.28
Reduction in Area, % 28
40
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 700 to 960
880
Tensile Strength: Yield (Proof), MPa 540 to 830
660

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 330
870
Melting Completion (Liquidus), °C 1640
1440
Melting Onset (Solidus), °C 1590
1390
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.1
17
Thermal Expansion, µm/m-K 9.1
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 36
2.5
Embodied Energy, MJ/kg 580
36
Embodied Water, L/kg 150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 43 to 60
32
Strength to Weight: Bending, points 39 to 48
26
Thermal Diffusivity, mm2/s 3.3
4.6
Thermal Shock Resistance, points 52 to 71
31

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0 to 0.060
Chromium (Cr), % 0
15.5 to 17.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
74.4 to 81
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 92.6 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0