An excellent stainless steel. The original composition of this steel was made by Latrobe. Carpenter bought Latrobe and now makes the steel and calls it CTS-B75P. The original steel was vacuum melted. B75P is made via powder metallurgy process.
We have high hopes for B75P. It is well balanced. It has enough vanadium carbides to have great edge holding, but not so many to make finishing the steel and sharpening difficult.
The original BG42 was developed for use in aerospace bearings. It would have been more popular if Latrobe had not been so difficult to work with.
BG42 is shown in the table above for comparison purposes.