Properties This article has property data, click to view

Titanium Alloys - Ti5Al2.5Sn Grade 6

Sep 12 2002

Chemical Formula

Ti5Al2.5Sn

Background

This alloy is most commonly used for airframe and jet engine applications requiring good weldability, stability and strength at elevated temperatures.

Ti5Al2.5Sn ELI

Ti5Al2.5Sn ELI has had extended use for liquid gas and propellant containment for rockets and space vehicles.

Composition

Table 1. The composition of Ti5Al2.5Sn Grade 6.

Content

C

<0.08%

Fe

<0.5%

N2

<0.05%

O2

<0.2%

Al

4.0-6.0%

Sn

2.0-3.0%

H2

<0.02%

Ti

Balance

Designations

Other designations for Ti5Al2.5Sn include:

•         AMS 4910

•         AMS 4926

•         AMS 4966

•         ASTM B265 Gr6

•         ASTM B348 Gr6

•         ASTM B381 Gr6

•         MIL –T-9046 2A or ELI 2B

•         MIL –T-9047 2A or ELI 2B

Key Properties

Physical Properties

Table 2. Typical physical properties for Ti5Al2.5Sn Grade 6.

Property

Typical Value

Density g/cm3 (lb/ cu in)

4.48 (0.161)

Melting Range °C±15°C (°F)

1571 (3860)

Specific Heat J/kg.°C (BTU/lb/°F)

540 (0.129)

Volume Electrical Resistivity ohm.cm (ohm.in)

157 (62)

Thermal Conductivity W/m.K (BTU/ft.h.°F)

7.7 (53)

Mean Co-Efficient of Thermal Expansion 0-100°C /°C (0-212°F /°F)

9.5x10-6 (5.3)

Beta Transus °C±15°C (°F)

1038 (1900)

Mechanical Properties

Table 3. Typical mechanical properties for Ti5Al2.5Sn Grade 6.

Property

Minimum

Typical Value

Tensile Strength MPa (ksi)

828 (120)

972 (141)

0.2% Proof Stress MPa (ksi)

779 (113)

897 (130)

Elongation Over 2 Inches %

10

16

Reduction in Area %

25

Elastic Modulus GPa (Msi)

110 (16)

Hardness Rockwell C

36

Specified Bend Radius <0.070 in x Thickness

4.0

Specified Bend Radius >0.070 in x Thickness

4.5

Post-weld stress relieved
Welded Bend Radius x Thickness

5.0

Charpy, V-Notch Impact J (ft.lbf)

26 (19)

Fabrication

Related Stories

•         Weldability – Excellent

•         Forging – Rough 1010-1030°C (1850-1900°F), finish 954-1010°C (1750-1850°F)

•         Annealing – 718-843°C (1325-1550°F), 10 min-4hr, AC

•         Stress Relief Annealing – 538-650°C (1000-1200°F), 15-60 mins, A.C.

Applications

As mentioned previously, this alloy is most commonly used for airframes and jet engines applications requiring good weldability, stability and strength at elevated temperatures.

The ELI grade has been used for liquid gas and propellant containment for rockets and space vehicles.

Source: Titanium Information Group.

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

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
(Logout)
Your comment type
Submit

Related Books

  • Alloy Physics: A Comprehensive Reference

Sponsored Content

Editorial Highlights

The Current State of the Global Semiconductor Market

The Current State of the Global Semiconductor Market

The global semiconductor market has entered an exciting period. Demand for chip technology is both driving the industry as well as hindering it, with current chip shortages predicted to last for some time. Current trends will likely shape the future of the industry, which is set to continue to show

How are Graphene Batteries Made?

How are Graphene Batteries Made?

The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

Newsletters you may be interested in

See all Newsletters »

Terms

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

Provide Feedback