Here are 18 essential '90s metal albums you should own on vinyl.

The decade marked a time of transition for metal in more ways than one.

Veteran acts such as Black Sabbath and Iron Maiden had already put out their best work long before this time. Hair metal was also fading fast.

The same couldn't be said about the "Big 4" thrash metal bands, as some of them were going through a transitional period of their own.

READ MORE: The Most Collected Albums By 11 Big Thrash Metal Bands (on Discogs)

Metallica found themselves getting regular airplay on both radio and MTV thanks to multiple tracks off 1991's self-titled "black album." Megadeth also continued their push into the mainstream.

And while these bands continued to grow their fanbase on a global scale, other, less mainstream acts were bubbling up from the underground and parts of Europe. British imprint Candlelight Records helped bring multiple breakthrough albums from international acts, including Opeth and Emperor, to the forefront.

Here are a few essential albums that will help you understand what metal in the '90s was all about. We're also throwing in a few suggestions on where to buy them (um, the Loudwire online vinyl shop) in case you still need to add any of these titles to your collection.

Deicide, Deicide (1990)

Deicide - Deicide
Roadrunner
Deicide - Deicide

Key tracks: "Sacrificial Suicide," "Dead By Dawn," "Lunatic of God's Creation"

Buy it here.

Megadeth, Rust in Peace (1990)

Capitol Records
Capitol Records
Capitol Records

Key tracks: "Tornado of Souls," "Holy Wars...The Punishment Due," "Hangar 18"

Buy it here.

Death, Human (1991)

Relativity Records
Relativity Records
Relativity Records

Key tracks: "Lack of Comprehension," "Flattening of Emotions," "Suicide Machine"

Buy it here.

Metallica, Metallica (1991)

Elektra
Elektra
Elektra

Key tracks: "Enter Sandman," "Nothing Else Matters," "Sad But True"

Buy it here.

Slayer, Decade of Aggression (1991)

Def American Records
Def American Records
Def American Records

Key tracks: Anything with Tom Araya's stage banter

Buy it here.

Megadeth, Countdown to Extinction (1992)

Megadeth, 'Countdown to Extinction' (1992)
Capitol Records
Megadeth, 'Countdown to Extinction' (1992)

Key tracks: "Symphony of Destruction," "Sweating Bullets," "Skin O' My Teeth"

Buy it here.

Pantera, Vulgar Display of Power��(1992)

Atko
Atko
Atko

Key tracks: "Walk," "This Love," "Mouth for War"

Buy it here.

Tool, Undertow (1993)

tool, undertow
Zoo
tool, undertow

Key tracks: "Sober," "Prison Sex," "Intolerance"

Buy it here.

Type O Negative, Bloody Kisses (1993)

type o negative, bloody kisses, 90s albums to pass on to your children
Roadrunner
type o negative, bloody kisses, 90s albums to pass on to your children

Key tracks: "Black No. 1 (Little Miss Scare-All)," "Christian Woman," "Summer Breeze"

Buy it here.

Pantera, Far Beyond Driven (1994)

Elektra/East West
Elektra/East West
Elektra/East West

Key tracks: "I'm Broken," "5 Minutes Alone," "Becoming"

Buy it here.

Korn, Korn (1994)

korn self titled album
Immortal/Epic
korn self titled album

Key tracks: "Blind," "Shoots and Ladders," "Clown"

Buy it here.

Metallica, Load (1996)

metallica until it sleeps
Elektra Records
metallica until it sleeps

Key tracks: "Until It Sleeps," "King Nothing," "Hero of the Day"

Buy it here.

Sepultura, Roots (1996)

Roadrunner Records
Roadrunner Records
Roadrunner Records

Key tracks: "Roots Bloody Roots," "Ratamahatta," "Attitude"

Buy it here.

Emperor, Anthems to the Welkin at Dusk (1997)

Candlelight Records
Candlelight Records
Candlelight Records

Key tracks: "Ye Entrancemperium," "The Wanderer," "Thus Spake the Nightspirit"

Buy it here.

Metallica, ReLoad (1997)

metallica reload
Elektra
metallica reload

Key tracks: "Fuel," "The Memory Remains," "The Unforgiven II"

Buy it here.

Rammstein, Sehnsucht (1997)

Motor Music / Slash
Motor Music / Slash
Motor Music / Slash

Key tracks: "Du hast," :"Engel," ":Sehnsucht"

Buy it here.

Opeth, My Arms, Your Hearse (1998)

Candlelight Records
Candlelight Records
Candlelight Records

Key tracks: "Credence," "Demon of the Fall," "When"

Buy it here.

System of a Down, System of a Down (1998)

System of a Down, 'System of a Down'
American/Columbia
System of a Down, 'System of a Down'

Key tracks: "Sugar," "Spiders," "Suite-Pee"

Buy it here.

 Of course, these albums don't tell the entire story of metal in the '90s. A lot was going on outside of the music as well.

Keep reading to see the most shocking moments in rock and metal during the decade.

The Most Shocking Rock + Metal Moments of the '90s

The wildest moments of the '90s.

Gallery Credit: Lauryn Schaffner

More From 92.9 WBUF