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R56401 Titanium vs. Grade 6 Titanium

Both R56401 titanium and grade 6 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is R56401 titanium and the bottom bar is grade 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 9.1
11
Fatigue Strength, MPa 480
290
Poisson's Ratio 0.32
0.32
Reduction in Area, % 17
27
Shear Modulus, GPa 40
39
Shear Strength, MPa 560
530
Tensile Strength: Ultimate (UTS), MPa 940
890
Tensile Strength: Yield (Proof), MPa 850
840

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 340
310
Melting Completion (Liquidus), °C 1610
1580
Melting Onset (Solidus), °C 1560
1530
Specific Heat Capacity, J/kg-K 560
550
Thermal Conductivity, W/m-K 7.1
7.8
Thermal Expansion, µm/m-K 9.6
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
36
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 38
30
Embodied Energy, MJ/kg 610
480
Embodied Water, L/kg 200
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
92
Resilience: Unit (Modulus of Resilience), kJ/m3 3440
3390
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 59
55
Strength to Weight: Bending, points 48
46
Thermal Diffusivity, mm2/s 2.9
3.2
Thermal Shock Resistance, points 67
65

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
4.0 to 6.0
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.012
0 to 0.015
Iron (Fe), % 0 to 0.25
0 to 0.5
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.13
0 to 0.2
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 88.5 to 91
89.8 to 94
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.4