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Titanium Alloys - Ti6Al7Nb Properties and Applications

Chemical Formula

Ti6Al7Nb

Topics Covered

Background

Composition

Designations

Key Properties

Physical Properties

Mechanical Properties

Background

Ti6Al7Nb is a dedicated high strength titanium alloy with excellent biocompatibility for surgical implants. Used for replacement hip joints, it has been in clinical use since early 1986.

Composition

Table 1. The composition of Ti6Al7Nb.

 

Content

Al

5.5-6.5%

Nb

6.5-7.5%

Ta

<0.50%

Fe

<0.25%

N2

<0.05%

O2

<0.20%

C

<0.08%

H2

<0.009%

Ti

Balance

Designations

Other designations for Ti6Al7Nb include:

         SN 056512 Swiss National specification

Key Properties

Physical Properties

Table 2. Typical physical properties for Ti6Al7Nb.

Property

Typical Value

Density g/cm3 (lb/ cu in)

4.52 (0.163)

Beta Transus °C±15°C (°F)

1010 (1850)

Mechanical Properties

Table 3. Typical mechanical properties for Ti6Al7Nb.

Property

Typical Value

Tensile Strength MPa (ksi) sheet

1000 (145)

0.2% Proof Stress MPa (ksi)

900 (130)

Elongation over 5D %

12

Reduction in Area %

35

Elastic Modulus GPa (Msi)

105 (15)

 

 

Source: The Titanium Information Group

 

For more information on this source please visit The Titanium Information Group

 

Date Added: Jul 2, 2003 | Updated: Jun 11, 2013
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