Aluminum 7049 is stocked by 0 North American distributors and produced by 4 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
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Specifications
The following specifications cover Aluminum 7049
No Specifications.
Property Results
Chemistry Data : [top]
Aluminum
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Balance |
Chromium
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0.1 - 0.22 |
Copper
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1.2 - 1.9 |
Iron
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0.35 max |
Magnesium
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2 - 2.9 |
Manganese
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0.2 max |
Remainder Each
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0.05 max |
Remainder Total
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0.15 max |
Silicon
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0.25 max |
Titanium
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0.1 max |
Zinc
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7.2 - 8.2 |
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Principal Design Features
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7049 is basically a forging alloy. It is heat treatable with very good resistance to stress corrosion cracking.
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Applications
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Primary applications for this alloy involve structural forgings, such as used in the aircraft or missile industries.
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Machinability
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The machinability of 7049 is good in the heat treated state. As with most of the aluminum alloys the use of oil lubricants is recommended during machining.
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Forming
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This alloy is NOT intended to be cold formed. Forming is done by hot forging or hot forming.
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Welding
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Welding of 7049 alloy should be avoided. It may be possible to do tungsten inert gas welding, but best to consider this as an alloy that is not normally welded.
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Heat Treatment
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Solution heat treatment is done at 875 F for adequate time to allow thorough heating, followed by a water quench. The alloy may be aged after the solution heat treatment - see "Aging".
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Forging
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Forging is done in a relatively narrow temperature range of 820 F down to 720 F.
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Hot Working
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Hot working would be accomplished in the same temperature range as for forging, that is 820 F to 720 F.
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Cold Working
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Cold working of this alloy should NOT be done.
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Annealing
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Not applicable to this alloy as it is not cold worked.
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Aging
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Aging, or precipitation hardening, is done in a 2 step heat treatment. First allow 48 hours at room temperature, followed by 24 hours at 250 F and air cool. Second step is 14 hours aging at 320 F and for 14 hours followed by air cooling.
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Tempering
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Not applicable.
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Hardening
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Hardens only by aging heat treatment. See "Aging".
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Physical Data : [top]
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Density (lb / cu. in.)
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0.102
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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70.25
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Melting Point (Deg F)
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900
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Modulus of Elasticity Tension
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10.2
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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.
