14 strokes
                                                    
                        Jouyou kanji
            Taught in 5th grade
    
                                                    JLPT exam level N2
                                            copper
Kun'yomi
- あ - か - が - ね - copper (Cu) ②bronze (medal) 
On'yomi
- ド - ウ - copper (Cu) ②bronze (medal) 
Character Breakdown
copper
ドウ あかがね (5th, N2)
gold
キン きむ かね (1st, N5)
References
| Unicode hex code | 9285 | 
| JIS X 0208 | 1-38-28 | 
| Nelson, A. Classic Nelson | 4853 | 
| Haig, J. New Nelson Japanese-English Character Dictionary | 6266 | 
| Halpern, J. New Japanese-English Character Dictionary | 1721 | 
| Halpern, J. Kodansha Kanji Dictionary | 2155 | 
| Halpern, J. Kanji Learners Dictionary (Kodansha) | 1132 | 
| Halpern, J. Kanji Learners Dictionary (Kodansha), 2nd edition (2013) | 1533 | 
| Heisig, J. Remembering The Kanji | 272 | 
| Heisig, J. Remembering The Kanji, Sixth Ed. | 290 | 
| Gakken A New Dictionary of Kanji Usage | 1437 | 
| O'Neill, P.G. Japanese Names | 2159 | 
| O'Neill, P.G. Essential Kanji | 855 | 
| Morohashi Daikanwajiten | 40361 | 
| Henshall, K. A Guide To Remembering Japanese Characters | 758 | 
| Spahn and Hadamitzky Kanji and Kana | 1605 | 
| Spahn and Hadamitzky Kanji and Kana (2011 edition) | 1712 | 
| Sakade, F. A Guide To Reading and Writing Japanese | 683 | 
| Hodges & Okazaki Japanese Kanji Flashcards | 978 | 
| Henshall & De Groot A Guide To Reading and Writing Japanese, 3rd ed. | 781 | 
| Kask, A. Tuttle Kanji Cards | 800 | 
| Nishiguchi & Kono Kanji in Context | 1340 | 
| Kodansha Kodansha Compact Kanji Guide | 1821 | 
| Maniette, Y. Les Kanjis dans la tete | 278 | 
| Tuttle Dictionary Descriptor Code | 8a6.12 | 
| Four corner code | 8712.0 | 
| De Roo Code | 2849 |