ASTM B817 Type I Grade 1 Class B Titanium
ASTM B817 type I grade 1 class B is ASTM B817 type I in the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare ASTM B817 type I grade 1 class B to: powder metallurgy titanium alloys (top), all titanium alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
100 GPa 15 x 106 psi
Elongation at Break
8.0 %
Fatigue Strength
410 MPa 60 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
14 %
Shear Modulus
40 GPa 5.8 x 106 psi
Tensile Strength: Ultimate (UTS)
850 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
750 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
340 °C 640 °F
Melting Completion (Liquidus)
1600 °C 2920 °F
Melting Onset (Solidus)
1550 °C 2830 °F
Specific Heat Capacity
560 J/kg-K 0.13 BTU/lb-°F
Thermal Conductivity
7.1 W/m-K 4.1 BTU/h-ft-°F
Thermal Expansion
9.6 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
36 % relative
Density
4.4 g/cm3 280 lb/ft3
Embodied Carbon
38 kg CO2/kg material
Embodied Energy
610 MJ/kg 260 x 103 BTU/lb
Embodied Water
200 L/kg 23 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
65 MJ/m3
Resilience: Unit (Modulus of Resilience)
2640 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
35 points
Strength to Weight: Axial
53 points
Strength to Weight: Bending
45 points
Thermal Diffusivity
2.9 mm2/s
Thermal Shock Resistance
60 points
Alloy Composition
| Ti | 87 to 91 | |
| Al | 5.5 to 6.8 | |
| V | 3.5 to 4.5 | |
| Fe | 0 to 0.4 | |
| O | 0 to 0.3 | |
| Na | 0 to 0.2 | |
| Cl | 0 to 0.2 | |
| C | 0 to 0.1 | |
| Si | 0 to 0.1 | |
| N | 0 to 0.040 | |
| H | 0 to 0.015 | |
| res. | 0 to 0.4 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B817: Standard Specification for Powder Metallurgy (P/M) Titanium Alloy Structural Components
Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003
Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007