On which chart did Metallica's The Black Album become the band's first No. 1 album?

Metallica’s The Black Album became the band’s first No. 1 album on the Billboard 200.

The Billboard 200 is the principal United States chart for albums and extended releases. Metallica reached the top immediately upon release in 1991, marking a major commercial milestone after the band had built its reputation through influential but less mainstream metal records.

This achievement is separate from the performance of individual songs. “Enter Sandman” appeared on the Billboard Hot 100 and peaked at No. 16, while “Wherever I May Roam” reached No. 2 on the Mainstream Rock Tracks chart. Those are different charts with different measurement categories.

The Black Album’s Billboard 200 success continued beyond its initial debut. It spent four consecutive weeks at No. 1 and became one of the longest-charting and best-selling albums of the SoundScan era. Its success helped move Metallica from major metal act to global stadium headliner.