Alcoa 2003 Annual Report Download - page 7

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Integrated
Product
Approach
Allows
Alcoa-Airbus
Relationship
to Take Off
5
Boeing’s 777-300ER gets
long-range support from Alcoa
Boeing and Alcoa
The latest and longest-range version of
Boeing’s 777®airliner features wing
panels produced with Alcoa’s 2324-T39
Type 2 aluminum alloy.
Using this alloy in its first produc-
tion application, Boeing®maximizes
the 777-300ER’s performance as
a result of Alcoa’s extensive metallics
experience. The 2324-T39 Type 2 alloy
provides important weight savings,
which translate into increased range for
the long-haul Boeing airliner.
The 777-300ER wing uses three
large underwing panels manufactured
with this latest Alcoa alloy. The alloy’s
strength, combined with heat-treatment
and stretching used in the production
process, enables the panels to be thinner
while still providing the support needed
for the aircraft’s massive wing structure.
With a maximum range of 7,705
nautical miles, the 777-300ER can fly
nonstop between such destinations as
New York-Tokyo, Johannesburg-
London, and Frankfurt-Singapore.
result, the A380 will use about one mil-
lion Alcoa Lockbolts on every aircraft.
A new, highly damage-tolerant
alloy called A6013 HDT is used for
the A380 fuselage skins, while the
largest die forgings ever made by Alcoa
will serve as the aircraft’s 21-ft.-long x
6-ft.-wide wing spars.
On the A380’s upper wing, skins
measuring up to 112 ft. in length are
being produced from A7055 alloy, and
Alcoa is manufacturing lower wing
skins with the A2024 HDT alloy that
also provides high damage-tolerant
qualities.