# ASTM B817 Type II Grade 1 Class B Titanium

ASTM B817 type II grade 1 class B is ASTM B817 type II in the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare ASTM B817 type II 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 10 ^{6} psi*

Elongation at Break

6.0 *%*

Fatigue Strength

480 *MPa* 70 *x 10 ^{3} psi*

Poisson's Ratio

0.32

Reduction in Area

8.0 *%*

Shear Modulus

40 *GPa* 5.7 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

960 *MPa* 140 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

900 *MPa* 130 *x 10 ^{3} 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/cm ^{3}* 290

*lb/ft*

^{3}Embodied Carbon

40 *kg CO _{2}/kg material*

Embodied Energy

650 *MJ/kg* 280 *x 10 ^{3} BTU/lb*

Embodied Water

220 *L/kg* 26 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

56 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

3890 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

34 *points*

Strength to Weight: Axial

58 *points*

Strength to Weight: Bending

47 *points*

Thermal Shock Resistance

66 *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