Technical data sheets

Titanium Alloy   |   MIL

Titanium B-3


Titanium Alloy Ti-3Al-8V-4Mo-4Zr / UNS R58640 in sheet, strip and plate is used for high strength structural applications.

Chemical Composition

AMS T 9046
Titanium Alloy
Chemical Element % Present
Titanium (Ti) balance
Yttrium (Y) 0.01 max
Hydrogen (H) 0.02 max
Nitrogen (N) 0.03 max
Carbon (C) 0.05 max
Other (Each) 0.1 max
Oxygen (O) 0.12 max
Iron (Fe) 0.3 max
Others (Total) 0.4 max
Aluminium (Al) 3 - 4
Molybdenum (Mo) 3.5 - 4.5
Zirconium (Zr) 3.5 - 4.5
Chromium (Cr) 5.5 - 6.5
Vanadium (V) 7.5 - 8.5

Alloy Designations

Titanium B-3 / Ti-3Al-8V-4Mo-4Zr / UNS R58640 is similar to the following specifications but may not be a direct equivalent:

SAE AMS 4900

SAE AMS 4901

SAE AMS 4902

SAE AMS 4907

SAE AMS 4909

SAE AMS 4910  

SAE AMS 4911


SAE AMS 4915

SAE AMS 4916

SAE AMS 4917

SAE AMS 4918

SAE AMS 4919

SAE AMS T 9046

SAE MAM 4911







Supplied Forms

  • Plate
  • Sheet
  • Strip

Mechanical Properties

AMS T 9046
Titanium Alloy -
Mechanical Property Value
Proof Stress 827 Max MPa
Tensile Strength 862 Min MPa
Elongation A50 mm 6 Min %

The Mechanical Properties shown are for the ST Conditions. For the STA condition Minimum Proof 1172 is MPa and Minimum Tensile is 1241 MPa

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Last updated Thursday, February 19, 2015


This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources.

Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied.

Advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. All transactions are subject to the Company’s current Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.