Aluminium Alloy - ASTM & FED-QQ - QQ-A-225/9 T7351 Bar

QQ-A-225/9 T7351 Bar

A high strength aerospace aluminium alloy offering good corrosion resistance.


Chemical Composition

Spec: SAE AMS QQ-A-225/9

Alloy QQ A 225/9

Chemical Element % Present
Silicon (Si) 0.0 - 0.40
Iron (Fe) 0.0 - 0.50
Copper (Cu) 1.20 - 2.00
Manganese (Mn) 0.0 - 0.30
Chromium (Cr) 0.18 - 0.28
Magnesium (Mg) 2.10 - 2.90
Zinc (Zn) 5.10 - 6.10
Titanium (Ti) 0.0 - 0.20
Other (Each) 0.0 - 0.05
Others (Total) 0.0 - 0.15
Aluminium (Al) Balance

Properties

Physical PropertyValue
Density 2.81 g/cm³
Melting Point 635 °C
Thermal Expansion 23.5 x10^-6 /K
Modulus of Elasticity 72 GPa
Thermal Conductivity 134-160 W/m.K
Electrical Resistivity 40 % IACS
'Typical' Physical Properties are given

Spec: SAE AMS QQ-A-225/9

Bar - 12.7mm to 76.2mm

Mechanical PropertyValue
Proof Stress 386 Min MPa
Tensile Strength 469 Min MPa
Elongation A50 mm 10 Min %

Temper Types

Alloy QQ-A-225/9 is supplied in a range of tempers:

  • T651 - Solution heat treated, stress relieved by stretching then artificially aged
  • T7351 - Solution heat treatment then specially artifically aged for resistance to stress corrosion.

Supplied Forms

Alloy QQ-A-225/9 T651 is supplied in bar/rod

  • Bar
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Last Datasheet Revision

7 January 2014

Disclaimer

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.