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Grade 18 Titanium vs. R58150 Titanium

Both grade 18 titanium and R58150 titanium are titanium alloys. They have 85% of their average alloy composition in common. There are 26 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 18 titanium and the bottom bar is R58150 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Elongation at Break, % 11 to 17
13
Fatigue Strength, MPa 330 to 480
330
Poisson's Ratio 0.32
0.32
Reduction in Area, % 23
68
Shear Modulus, GPa 40
52
Shear Strength, MPa 420 to 590
470
Tensile Strength: Ultimate (UTS), MPa 690 to 980
770
Tensile Strength: Yield (Proof), MPa 540 to 810
550

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 330
320
Melting Completion (Liquidus), °C 1640
1760
Melting Onset (Solidus), °C 1590
1700
Specific Heat Capacity, J/kg-K 550
500
Thermal Expansion, µm/m-K 9.9
8.4

Otherwise Unclassified Properties

Density, g/cm3 4.5
5.4
Embodied Carbon, kg CO2/kg material 41
31
Embodied Energy, MJ/kg 670
480
Embodied Water, L/kg 270
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
94
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3110
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
32
Strength to Weight: Axial, points 43 to 61
40
Strength to Weight: Bending, points 39 to 49
35
Thermal Shock Resistance, points 47 to 67
48

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0 to 0.1
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.25
0 to 0.1
Molybdenum (Mo), % 0
14 to 16
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.15
0 to 0.2
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 92.5 to 95.5
83.5 to 86
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0