Aluminium, ASTM & FED-QQQQ-A-200/8 T6511 (6061)

Aerospace aluminium alloy with good strength and workability.

A medium strength aerospace aluminium alloy with, depending upon temper, yield strength of 12-35 ksi (80-240 MPa) and tensile strength of 26-38 ksi (180-260 MPa).

This alloy is used where good strength combined with workability is required.

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Related Specifications

Aluminium alloy QQ-A-200/8 has similarities to the following standard designations and specifications but may not be a direct equivalent:

  • AMS 4150
  • AMS 4173

Temper Types

Alloy QQ-A-200/8 is supplied in a wide range of tempers:

  • T4510
  • T42
  • T4511
  • T62
  • T6510
  • T4
  • T6511
  • O
  • T6


Chemical Composition


  • High technology applications
  • Defence components
  • Aerospace components


  • Very good machinability
  • Good resistance to corrosive atmospheric attack
  • Weldability is very good by inert gas, resistance and spot welding

Additional Information

Mechanical Properties

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