Aluminum 7050 is stocked by 17 North American distributors and produced by 17 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Flat Rolled Products by 13 distributors but is also available to a lesser extent in Forging Products, Bar Products, Shapes, and Tubular Products.
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Specifications
The following specifications cover Aluminum 7050
- AMS 4108
- AMS 4201
- ASTM B247
- ASTM B316
- QQ A-430
- UNS A97050
Property Results
Chemistry Data : [top]
Aluminum
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Balance |
Chromium
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|
0.04 max |
Copper
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|
2 - 2.6 |
Iron
|
|
0.15 max |
Magnesium
|
|
1.9 - 2.6 |
Manganese
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|
0.1 max |
Remainder Each
|
|
0.05 max |
Remainder Total
|
|
0.15 max |
Silicon
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|
0.12 max |
Titanium
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|
0.06 max |
Zinc
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|
5.7 - 6.7 |
Zirconium
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|
0.08 - 0.15 |
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Principal Design Features
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7050 alloy is heat treatable so as to produce mechanical properties of high strength and toughness. It has very good resistance to stress corrosion cracking.
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Applications
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Commonly used in the manufacture of aircraft and other structures.
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Machinability
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No data available.
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Forming
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The 7050 alloy may be readily formed in either the O temper or the heat treated condition.
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Welding
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Welding of 7050 alloy is a problem and should be avoided. Gas tungsten or gas metal arc welding is NOT successful with this alloy. Weld cracking and porosity usually result and any weld joint that is made is much weaker than the parent metal.
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Heat Treatment
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Solution heat treat at 890 F. Time at temperature is dependent upon section thickness and the producer of the alloy should be consulted on this as well as quenching rate.
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Forging
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The alloy may be forged. However no data is available without consulting the alloy source.
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Hot Working
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As with Forging the 7050 alloy may be hot worked but no data is available except from the alloy producer.
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Cold Working
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The alloy may be cold formed by conventional means. However bend radii should be generous.
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Annealing
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Not applicable to this alloy.
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Aging
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A 2 stage heat treatment is used for aging this alloy. First heat to 250 F for 3 to 6 hours (depending on section size) and follow that with 325 F for 15 hours then air cool.
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Tempering
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Not applicable.
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Hardening
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Hardens only by precipitation heat treatment. See "Aging".
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Other Physical Props
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Electrical conductivity 40% of copper.
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Physical Data : [top]
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Density (lb / cu. in.)
|
0.102
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Specific Gravity
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2.83
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Melting Point (Deg F)
|
920
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Poissons Ratio
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0.33
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Modulus of Elasticity Tension
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10.3
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Modulus of Elasticity Torsion
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3.9
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
