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| M-Metal | |
| Type: | Mineral |
| Continuity: | DC Universe |
| Aliases: | None |
| Availability: | Uncommon item |
| Manufacturer: | N/A |
| 1st appearance: | The Flash #128 |
M-Metal is a fictional mineral featured in comic books published by DC Comics. It is associated with the Flash line of titles and first appeared in "The Case of the Real-Gone Flash!" story from The Flash #128 in May, 1962.
M-Metal is the name designated to an alien metal that was discovered by scientists in the 64th century. It was discovered on a planetoid and brought back to Earth and used at a building dedicated to science in Central City. The scientists analyzed the metal's radioactive components and used it for the propulsive force behind a Time vehicle. A disgruntled stage magician calling himself Abra Kadabra stole the Time vehicle and used it to go back to the 20th century.