炭 is a Japanese kanji written with 9 strokes, listed here under the keyword “charcoal”. It is built from 灰 (ashes) and 山 (mountain). In Remembering the Kanji by James W. Heisig it is frame 833.
On KumiJi Glyph Explorer, open the parts search and type “ashes” + “mountain”. 炭 is among the results, together with every other character containing the same shapes.
Open 炭 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.