Strength of Steel is the fourth studio album by Canadian heavy metal band Anvil.

It was released by Metal Blade and Enigma Records on June 22, 1987.

It is the group's sole charting album in the United States, peaking at No.

A music video was made for the song "Mad Dog".

Metal Hammer included the album cover on their list of "50 most hilariously ugly rock and metal album covers ever".