AMS 4978

AMS 4978
Revision: “J” issued 05/2022
Alloy: 6AL-6V-2SN
Product Forms: Titanium Bars, Forgings, and Rings
Condition: Annealed

Composition Analysis
Aluminum: 5.0 – 6.0%	Carbon (Maximum): 0.05%
Vanadium: 5.0 – 6.0%	Nitrogen (Maximum): 0.04%
Tin: 1.5 – 2.5%	Hydrogen (Maximum): 0.015%
Iron: 0.35 – 1.0%	Yttrium (Maximum): 0.005%
Copper: 0.35 – 1.0%	Other Elements (Total): 0.40%
Oxygen (Maximum): 0.20%	Titanium: Balance

 

Tensile Properties (Minimums)*
Tensile: 145-150 ksi	Elongation: 8 – 10%
Yield: 135-165 ksi	Reduction of Area: 15 – 20%

*Tensile property requirements vary based on orientation, section thickness/diameter, and cognizant engineering organization requirements.

Required Acceptance Tests

• Tensile Properties
• Microstructure
• Surface Contamination
• Fracture Toughness (when specified)
• Chemical Composition

Disclaimer
The use of this information is strictly voluntary. Information may contain typographical errors, and should be used as a guideline only. This Material Spec Sheet contains generalizations and is in no way a substitution for the AMS 4978 specification.

To purchase AMS 4978J, please visit: http://standards.sae.org/ams4978j/

Changes may be made to the information contained herein.