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Grade 12 Titanium vs. Grade 1 Titanium

Both grade 12 titanium and grade 1 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is grade 12 titanium and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
120
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
28
Fatigue Strength, MPa 280
170
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
36
Shear Modulus, GPa 39
39
Shear Strength, MPa 330
200
Tensile Strength: Ultimate (UTS), MPa 530
310
Tensile Strength: Yield (Proof), MPa 410
220

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Maximum Temperature: Mechanical, °C 320
320
Melting Completion (Liquidus), °C 1660
1660
Melting Onset (Solidus), °C 1610
1610
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 21
20
Thermal Expansion, µm/m-K 9.6
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
37
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 31
31
Embodied Energy, MJ/kg 500
510
Embodied Water, L/kg 110
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
79
Resilience: Unit (Modulus of Resilience), kJ/m3 770
230
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 32
19
Strength to Weight: Bending, points 32
23
Thermal Diffusivity, mm2/s 8.5
8.2
Thermal Shock Resistance, points 37
24

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.2
Molybdenum (Mo), % 0.2 to 0.4
0
Nickel (Ni), % 0.6 to 0.9
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
0 to 0.18
Titanium (Ti), % 97.6 to 99.2
99.095 to 100
Residuals, % 0
0 to 0.4