Steel does ×2 to Ice

Generations VI to IX, single types. The other way round, Ice against Steel, is ×½.

65 Steel and 48 Ice species among the 1025 this site covers.

Attacker, Grass and Steel Kartana sprite

Kartana #0798

damage×2Generations VI to IX

Defender, Ice Regice sprite

Regice #0378

Steel did not exist in Generation I, so Steel against Ice has no value there.

Strongest Steel attackers

Kartana leads Steel at Atk 181

Sturdiest Ice defenders

Dual types that change the answer