MMS 1227 - 6Al-4V Titanium Alloy Bars and Forgings (Lockheed Martin)
MMS 1227 is the Lockheed Martin Material Specification for 6Al-4V Titanium Alloy bars and forgings. This specification covers the procurement and quality requirements for 6Al-4V titanium bars and forgings used in Lockheed Martin aerospace programs including the F-35 Lightning II, F-22 Raptor, C-130J Super Hercules, and space programs where LM engineering drawings specify the MMS designation.
Material per MMS 1227 meets Lockheed Martin’s supplier qualification, certification, and traceability requirements in addition to the base AMS chemistry and mechanical property requirements. Both MMS and the corresponding AMS specifications are commonly listed as acceptable on Lockheed Martin engineering drawings.
6Al-4V is recommended for use at temperatures from -350° to 750°F (-210° to 400°C). Applications outside this temperature range are possible in certain situations. The alloy is weldable. Complex shapes can be made via hot forming. It machines like an austenitic stainless steel.
Applications of MMS 1227 6Al-4V Titanium
- Aircraft Turbine Engine Components
- Aircraft Structural Components
- Aerospace Fasteners
- Formula 1 Parts
- Medical Devices
- Marine Applications
- Ship Propellers
Boeing / Douglas
Boeing (BMS) and Douglas (DMS) material specifications for 6Al-4V titanium used in Boeing and McDonnell Douglas aerospace programs.
Certified Material for Critical Service
Materials supplied in 6Al-4V titanium must meet strict aerospace certification and traceability requirements. Fighter Jet Metals supports sourcing across a wide range of AMS, MIL, and OEM specifications, ensuring compliance with industry standards.
All material is supplied with full mill certifications, complete heat-lot traceability, and detailed documentation. This ensures reliability and suitability for safety-critical aerospace, defense, and high-performance engineering applications.