Doors and Windows - replacing steel casement windows

I have a 1927 Tudor style home w/steel casement windows (w/divided light) that need replacing. I'm trying to find a 'replacement' window that won't require breaking out the exterior stucco or the interior plaster. Is there any way to merely cut out the existing steel window, leaving the 3/4" frame in place, and install a replacement window into the opening? Don't know if I've explained it. Thanks in advance for any advice.

These are THE worst window to replace in my opinion.....and I don't know of any way to cut it loose from flanges that extend down into the plaster. The good side is, replacement vinyl windows ( if that's the route you're headed) are much thicker on the frame ( 3.25") vs the fairly thin frame of the ones you have, so you can bugger up some of the plaster/stucco and still hide it with the new window.

What I do is take a Sawsall with metal cutting blade and saw off the casement sashes at their pivot point. If you have any with a center or top fixed glass, duct tape the center glass up good on both sides and just take a hammer and bust it out. The tape will keep most of it together, it's still a safety glass and glove job.

Then pry toward center the most loose part of the frame/flange, and when up enough, saw in two with the same saw. Once you have the frame cut, you can start prying a side out. Fortunately, the flange isn't too big....it wasn't a nailing flange, just something to stick in the mortar. Be as carefull as you can, but even so, figure on having to repair some of the plaster at least.....usually these type windows have sweated over the years and ruined some of the closer plaster anyway.