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ASTM B817 Type I vs. Grade 1 Titanium

Both ASTM B817 type I and grade 1 titanium are titanium alloys. They have 89% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 4.0 to 13
28
Fatigue Strength, MPa 360 to 520
170
Poisson's Ratio 0.32
0.32
Reduction in Area, % 5.0 to 29
36
Shear Modulus, GPa 40
39
Tensile Strength: Ultimate (UTS), MPa 770 to 960
310
Tensile Strength: Yield (Proof), MPa 700 to 860
220

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 340
320
Melting Completion (Liquidus), °C 1600
1660
Melting Onset (Solidus), °C 1550
1610
Specific Heat Capacity, J/kg-K 560
540
Thermal Conductivity, W/m-K 7.1
20
Thermal Expansion, µm/m-K 9.6
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
37
Density, g/cm3 4.4
4.5
Embodied Carbon, kg CO2/kg material 38
31
Embodied Energy, MJ/kg 610
510
Embodied Water, L/kg 200
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
79
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
230
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 48 to 60
19
Strength to Weight: Bending, points 42 to 49
23
Thermal Diffusivity, mm2/s 2.9
8.2
Thermal Shock Resistance, points 54 to 68
24

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
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 0.015
Iron (Fe), % 0 to 0.4
0 to 0.2
Nitrogen (N), % 0 to 0.040
0 to 0.030
Oxygen (O), % 0 to 0.3
0 to 0.18
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Titanium (Ti), % 87 to 91
99.095 to 100
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.4