MakeItFrom.com
Menu (ESC)

UNS R56401 Titanium

R56401 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition.

It has a moderately high heat capacity among wrought titaniums. In addition, it has a moderately low melting temperature and a moderately low ductility.

The graph bars on the material properties cards below compare R56401 titanium to: wrought titaniums (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

110 GPa 15 x 106 psi

Elongation at Break

9.1 %

Fatigue Strength

480 MPa 70 x 103 psi

Poisson's Ratio

0.32

Reduction in Area

17 %

Shear Modulus

40 GPa 5.8 x 106 psi

Shear Strength

560 MPa 81 x 103 psi

Tensile Strength: Ultimate (UTS)

940 MPa 140 x 103 psi

Tensile Strength: Yield (Proof)

850 MPa 120 x 103 psi

Thermal Properties

Latent Heat of Fusion

410 J/g

Maximum Temperature: Mechanical

340 °C 640 °F

Melting Completion (Liquidus)

1610 °C 2940 °F

Melting Onset (Solidus)

1560 °C 2850 °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

4.5 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)

83 MJ/m3

Resilience: Unit (Modulus of Resilience)

3440 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

35 points

Strength to Weight: Axial

59 points

Strength to Weight: Bending

48 points

Thermal Diffusivity

2.9 mm2/s

Thermal Shock Resistance

67 points

Alloy Composition

Titanium (Ti) 88.5 to 91
Aluminum (Al) 5.5 to 6.5
Vanadium (V) 3.5 to 4.5
Iron (Fe) 0 to 0.25
Oxygen (O) 0 to 0.13
Carbon (C) 0 to 0.080
Nitrogen (N) 0 to 0.050
Hydrogen (H) 0 to 0.012

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM F136: Standard Specification for Wrought Titanium-6Aluminum-4Vanadium ELI (Extra Low Interstitial) Alloy for Surgical Implant Applications (UNS R56401)

Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003

Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015