Steelix is Amazing at defense, decent attack, but slow.
Magneton has good defense, decent speed, and low attack.
Scizor has great attack and defense but average speed.
Aggron has amazing attack, great defense, slow.
Lucario has great attack and good defense and speed.
Bastiondon deserves recognition too.
However, the best steel Pokemon is Arceus and Dialga.
Steel is super effective against rock type pokemon.
water
Steel type Pokemon is super effective against: Ground, Fire, Fighting Steel type Pokemon are not effective against: Bug, Flying, Psychic, Ghost, Dark, Steel, Dragon, Grass, Normal, Ice, Rock. Steel type Pokemon are never effective by: Poison. Steel type Pokemon have a regular damage by (regular damage): Electric, Water. Hope this helps!
Fire and fighting type moves are super effective against Ice type pokemon.
Water Pokemon. You can also use rock Pokemon such as geodude or onix. Do not use grass or steel Pokemon these types are week against fire.
Dark, Steel
Fighting and Ground type moves are super-effective against steel type pokemon.
No. Ghost and Dark is super effective to Psychic Pokemon. Fire is super effective to Grass, Steel, Bug, and Ice.
Ice, Electric and steel.
I would say that fire is the most effective. Jynx is a Ice and Psychic type. Fire, Fighting, Rock, Steel, Bug, Ghost, and Dark will Be the most effective.
The most effective in rock type Pokemon is water Pokemon ofcourse.
Fire, Fighting and Ground moves are all super-effective against Steel-type pokemon.