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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


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


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

Titanium (Ti)Ti 82.1 to 87.8
Aluminum (Al)Al 5.0 to 6.0
Vanadium (V)V 5.0 to 6.0
Tin (Sn)Sn 1.5 to 2.5
Iron (Fe)Fe 0.35 to 1.0
Copper (Cu)Cu 0.35 to 1.0
Oxygen (O)O 0 to 0.3
Sodium (Na)Na 0 to 0.2
Chlorine (Cl)Cl 0 to 0.2
Carbon (C)C 0 to 0.1
Silicon (Si)Si 0 to 0.1
Nitrogen (N)N 0 to 0.040
Hydrogen (H)H 0 to 0.015
Residualsres. 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