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ASTM B817 Type I vs. Titanium 6-7

Both ASTM B817 type I and titanium 6-7 are titanium alloys. They have a moderately high 93% 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 ASTM B817 type I and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 4.0 to 13
11
Fatigue Strength, MPa 360 to 520
530
Poisson's Ratio 0.32
0.33
Reduction in Area, % 5.0 to 29
29
Shear Modulus, GPa 40
45
Tensile Strength: Ultimate (UTS), MPa 770 to 960
1020
Tensile Strength: Yield (Proof), MPa 700 to 860
900

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 340
300
Melting Completion (Liquidus), °C 1600
1700
Melting Onset (Solidus), °C 1550
1650
Specific Heat Capacity, J/kg-K 560
520
Thermal Expansion, µm/m-K 9.6
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
75
Density, g/cm3 4.4
5.1
Embodied Carbon, kg CO2/kg material 38
34
Embodied Energy, MJ/kg 610
540
Embodied Water, L/kg 200
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
3460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
32
Strength to Weight: Axial, points 48 to 60
56
Strength to Weight: Bending, points 42 to 49
44
Thermal Shock Resistance, points 54 to 68
66

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
5.5 to 6.5
Carbon (C), % 0 to 0.1
0 to 0.080
Chlorine (Cl), % 0 to 0.2
0
Hydrogen (H), % 0 to 0.015
0 to 0.0090
Iron (Fe), % 0 to 0.4
0 to 0.25
Molybdenum (Mo), % 0
6.5 to 7.5
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0 to 0.040
0 to 0.050
Oxygen (O), % 0 to 0.3
0 to 0.2
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 87 to 91
84.9 to 88
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0