Billboard magazine has published a list of the top-selling hard rock and metal albums, ranked by sales data as compiled by Nielsen SoundScan. (Note: Not all the albums on the list were actually released during 2010.) It is as follows:

01. Dark Horse - NICKELBACK
02. A Thousand Suns - LINKIN PARK
03. Iron Man 2 (Soundtrack) - AC/DC
04. The Oracle - GODSMACK
05. Nightmare - AVENGED SEVENFOLD
06. Asylum - DISTURBED
07. Dear Agony - BREAKING BENJAMIN
08. The Sound Of Madness - SHINEDOWN
09. Them Crooked Vultures - THEM CROOKED VULTURES
10. Valleys Of Neptune - JIMI HENDRIX
11. Night Castle - TRANS-SIBERIAN ORCHESTRA
12. War Is The Answer - FIVE FINGER DEATH PUNCH
13. Life Starts Now - THREE DAYS GRACE
14. Greatest Hits - FOO FIGHTERS
15. Scream - OZZY OSBOURNE
16. Memento Mori - FLYLEAF
17. Fever - BULLET FOR MY VALENTINE
18. Black Gives Way To Blue - ALICE IN CHAINS
19. Backspacer - PEARL JAM
20. Cage The Elephant - CAGE THE ELEPHANT
21. Full Circle - CREED
22. Greatest Hits - MÖTLEY CRÜE
23. Slash - SLASH
24. Diamond Eyes - DEFTONES
25. Hellbilly Deluxe 2 - ROB ZOMBIE
26. Korn III: Remember Who You Are - KORN
27. Scars & Souvenirs - THEORY OF A DEADMAN
28. The Final Frontier - IRON MAIDEN
29. Stone Temple Pilots - STONE TEMPLE PILOTS
30. Mudvayne - MUDVAYNE
31. Tri-Polar - SICK PUPPIES
32. Audio Secrecy - STONE SOUR
33. Greatest Hits - THE WHO
34. Greatest Hits - BON JOVI
35. Powerless Rise - AS I LAY DYING
36. All Hope Is Gone - SLIPKNOT
37. Year Of The Black Rainbow - COHEED AND CAMBRIA
38. Stampede - HELLYEAH
39. Chickenfoot - CHICKENFOOT
40. Swan Songs - HOLLYWOOD UNDEAD
41. Order Of The Black - BLACK LABEL SOCIETY
42. Volume 4: Songs In The Key Of Love And Hate - PUDDLE OF MUDD
43. All Night Long - BUCKCHERRY
44. For We Are Many - ALL THAT REMAINS
45. Desperate Measures - HOLLYWOOD UNDEAD
46. Miss America - SAVING ABEL
47. Custom Built - BRET MICHAELS
48. Cold Day Memory - SEVENDUST
49. World Painted Blood - SLAYER
50. Sonic Boom - KISS

-blabbermouth.net