Regular flex Steel shaft ?= Firm graphite?

[drocpdp]

I just got a set of irons and didn't realize that steel shafts have flex ratings.
They are Nike blades and are "Regular" flex.

I usually swing a firm flex shaft with my graphite Driver and my previous irons were also firm-flexed-graphite...

Am I ok? I figured since they were steel they would be stiffer than my graphites...

Obviously I guess it's all by feel.. But am I safe with the regular flex?

[PiKapp23]

'Firm' flex is typically slightly stiffer than a 'Regular' flex shaft from same manufacturer and less stiff than a than a 'Stiff' from them. However, because there is not standard within the industry for shaft flexes it's hard to tell what the flex really is. Your assumption that a 'Firm' in graphite probably translates close to 'Regular' in steel is probably at least somewhat accurate, but it's hard to tell. What one company calls 'Regular' another might call 'Stiff' or 'Firm' while still another might call that flex 'Senior' or 'Light'. Main thing is how they feel to you and how you hit the ball with the new clubs. About the only time you can truly use the flex rating to compare is when you are comparing shafts from same manufacturer AND the same model of shaft (sometimes even different models can feel different). And comparing steel to graphite is even harder because of the inherent differences in the materials and how they are used.