2 jōyō kanji take the reading かね. Compare how their meanings differ.
かね。金属。 かね。ぜに。貨幣。 かたい。
gold
8 strokes
かね。
bell, gong, chimes
20 strokes
infoOnly readings listed in the jōyō kanji table are included. Adding readings outside the table would bury the distinctions that matter in everyday writing.