ingots, bars of metal, hurry
鋌 centers on solid metal in a raw, unshaped form: ingots or bars of metal. The meaning 'hurry' is a separate, less common sense that does not clearly connect to the metal idea.
鋌 combines 金 (metal) with 廷, which likely contributes the sound. The character originally referred to metal ingots or bars. The 'hurry' sense may have developed from a separate usage or phonetic loan, but the exact historical path is uncertain.
The left side 金 means metal, and the right side 廷 looks like a courtyard or a straight path. Imagine a courtyard filled with neatly stacked metal bars: 鋌 represents those solid metal ingots.
For テイ, picture a metal ingot shaped like a giant letter T: T -> テイ, and the T-shaped ingot is heavy and solid.