ASTM B817 Type II Grade 1 Class A Titanium
ASTM B817 type II grade 1 class A is ASTM B817 type II in the as-fabricated (no temper or treatment) condition. It has the lowest strength and lowest ductility compared to the other variants of ASTM B817 type II.
The graph bars on the material properties cards below compare ASTM B817 type II grade 1 class A 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
3.0 %
Fatigue Strength
390 MPa 57 x 103 psi
Poisson's Ratio
0.32
Reduction in Area
4.0 %
Shear Modulus
40 GPa 5.7 x 106 psi
Tensile Strength: Ultimate (UTS)
900 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
780 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
350 °C 660 °F
Melting Completion (Liquidus)
1580 °C 2880 °F
Melting Onset (Solidus)
1530 °C 2790 °F
Specific Heat Capacity
550 J/kg-K 0.13 BTU/lb-°F
Thermal Expansion
9.9 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
37 % relative
Density
4.6 g/cm3 290 lb/ft3
Embodied Carbon
40 kg CO2/kg material
Embodied Energy
650 MJ/kg 280 x 103 BTU/lb
Embodied Water
220 L/kg 26 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
26 MJ/m3
Resilience: Unit (Modulus of Resilience)
2890 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
34 points
Strength to Weight: Axial
55 points
Strength to Weight: Bending
45 points
Thermal Shock Resistance
62 points
Alloy Composition
| Ti | 82.1 to 87.8 | |
| Al | 5.0 to 6.0 | |
| V | 5.0 to 6.0 | |
| Sn | 1.5 to 2.5 | |
| Fe | 0.35 to 1.0 | |
| Cu | 0.35 to 1.0 | |
| 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