Plasteel

Plasteel was a hard material that had a variety of uses. For example, interior doors could be made of plasteel. The red Kaleesh mask worn by Sidon Ithano was also made of plasteel, as were certain parts of Darth Vader's helmet. The Knight of Ren Cardo wore plasteel-armored greaves. Plasteel was also used for treads, such as the 125-Z treadspeeder bike. The material could also be used in reconstructive surgery; by placing a plasteel sleeve over a fused bone segment, a surgeon would lend it enough strength so it was as sturdy as the original bone. Similarly, a plasteel mask could be attached over newly reshaped facial muscles.

B1-series battle droids were constructed with plasteel. The young rebel Ezra Bridger sometimes referred to Imperial stormtroopers as "plasteel pigs," although their distinctive white armors were actually made of plastoid. Nevertheless, plasteel had high strength, and made capable armor; M3 Bulwark Blast Shields were made out of sheets of reinforced plasteel, and were capable of shrugging off blaster rifle fire and even shrapnel from grenades.

Text and facts from the “Plasteel” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.