Composite parts must meet the same strength specifications as aluminum ones.

The disks, they say, can be made thinner than the aluminum ones used now because of their greater rigidity.

The aluminum ones were for anchoring fledgling stands against the winter winds.

The original wooden benches were replaced with aluminum ones in 1978 as part of the football team's 100th anniversary.

The actual wall was attached to 599 Broadway with steel pins, which will now be replaced with aluminum ones.

Magnesium ladders are even lighter than aluminum ones, but they flex more.

You may also have noted that there is a movement towards copper interconnects replacing the aluminum ones.

"These aluminum ones are a lot lighter than copper and will handle the current just as well."

Now the landlord wants to replace the building's 400 original mahogany windows with aluminum ones.

The plan called for replacing the building's 400 original mahogany windows with aluminum ones.