Aluminum 2618 is stocked by 4 North American distributors and produced by 5 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 Bar Products by 2 distributors but is also available to a lesser extent in Forging Products, and Tubular Products.
For distributor (small quantity) availability click here
For mill (large volume) production click here
To view all click here
Specifications
The following specifications cover Aluminum 2618
Property Results
Chemistry Data : [top]
Aluminum
|
|
Balance |
Copper
|
|
1.9 - 2.7 |
Iron
|
|
0.9 - 1.3 |
Magnesium
|
|
1.3 - 1.8 |
Nickel
|
|
0.9 - 1.2 |
Remainder Each
|
|
0.05 max |
Remainder Total
|
|
0.15 max |
Silicon
|
|
0.25 max |
Titanium
|
|
0.04 - 0.1 |
|
Principal Design Features
|
|
This alloy containing copper and magnesium is age hardenable for good strength in applications that involve exposure to heat up to 575 F.
|
|
|
Applications
|
|
Commonly used in the manufacture of aircraft engines.
|
|
|
Machinability
|
|
AL 2618 has excellent machining characteristics. The heat treated (aged) condition will allow machining to a smoother finish than is the case for annealed or water quenched conditions.
|
|
|
Forming
|
|
Formability, both hot and cold, is good.
|
|
|
Welding
|
|
Resistance welding may be done satisfactorily. The amount of heat input by other welding means may be harmful to this alloy and thus conventional fusion welding methods should NOT be used.
|
|
|
Heat Treatment
|
|
Solution heat treatment is done at 985 F for a period of time that will permit thorough heating and solutioning. This may be as long as 24 hours for heavy sections. A water quench follows this heating. Annealing and age hardening heat treatments are also possible - see "Annealing" and "Aging".
|
|
|
Forging
|
|
Hot forging is done in the range of 970 down to 700 F, starting with the material preheated to 970 F.
|
|
|
Hot Working
|
|
This alloy may readily be hot worked in the temperature range of 660 to 700 F.
|
|
|
Cold Working
|
|
The alloy has good formability and is readily cold worked in either the solution heat treated or annealed condition.
|
|
|
Annealing
|
|
Annealing, which may be required as a result of cold work, may be done at 725 F for 4 hours followed by slow cooling (typically furnace cooling).
|
|
|
Aging
|
|
The aging heat treatment (T 61) is accomplished by first solutioning at 980 F for up to 24 hours (depending on section size) followed by quench in boiling water and then aging at 390 F for up to 20 hours (minimum of 5 hours again dependent upon section size) and air cooled.
|
|
|
Tempering
|
|
Not applicable to this alloy.
|
|
|
Hardening
|
|
Hardens by cold working and aging heat treatment for T 61 condition. See "Aging".
|
|
|
Other Physical Props
|
|
Electrical conductivity 36% of copper.
|
|
|
Other Mechanical Props
|
|
Shear strength for the T 61 (aged) material is 40 ksi.
|
|
Physical Data : [top]
|
|
|
Density (lb / cu. in.)
|
0.1
|
|
Specific Gravity
|
2.76
|
|
Melting Point (Deg F)
|
950
|
|
Poissons Ratio
|
0.35
|
|
Modulus of Elasticity Tension
|
10.4
|
|
Modulus of Elasticity Torsion
|
4.2
|
Mechanical Data : [top]
|
MSO currently has no data available for this grade.
|
Videos :
|
MSO currently has no videos available for this grade.
|
Disclaimer
This information is provided "as is" and Metal Suppliers Online, Inc. makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. Metal Suppliers Online, Inc. specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose.
In no event shall Metal Suppliers Online, Inc. be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein.
This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
