I am not sure at all about that.
Blister steel was made from wrought iron. In the cementation process, wrought iron rods were packed in ovens with sources of carbon (eg "cement powder") in alternate layers and heated for a week of more. This got more carbon into the steel, but it was not uniform - the surface had carbon rich blisters on it, but the carbon content fell off as the centre of the bar approached.
So it was broken up, heated and hammered to get a more even distribution of carbon and was then known as shear steel, which when properly done gave a wonderfully fine edge to edge tools etc. Sometimes the process of breaking up, heating and hammering was done again - to give Double Shear Steel. I think there was also a Triple Shear Steel.
Or the blister steel was used to make crucible steel (introduced in 1745 by Benjamin Huntsman in the UK and sold initially to the french market as Acier Fondu) a steel known as long ago as Medieval times in Asia, where it was called Wootz.
Note the date - 1745.
Crucible Steel was made in refineries with a large furnace holding a lot of clay pots or 'crucibles' - maybe 12 or so, each holding 15kg of product. The broken up blister steel along with a special flux was placed in the furnace when the pots were white hot and left for 3 hours or so, then poured into ingot moulds and cooled. This was large-scale production - you could go smaller, but there was a lot of work involved and skills that ordinary razor makers and razor grinders did not possess. The furnace had to go up ti 1600 degrees alone.
This product was also known as Cast Steel - because the crucible steel was cast into ingots.
It did not take off in Sheffield at first as the steel and Iron masters resented change, so Huntsman sold to the french. The products made from it flooded back into the UK, which frightened the Sheffield magnates, making them change their minds. Business soared. Practically all razors were made from this in the mid to late 1700s.
By the 1860s the Bessemer Converter produced steel very cheaply compared to other methods, so steel products became cheaper.
Regards,
Neil