Thank you for your explanations.
I am surprised anyhow that the C75 with 2% Nickle did break but maybe it has also to do on how you treat the steel.
If you say that you would like to have the steel at HRC 50 – 55 then I think that this is far to high for your further process. Punching may still work OK, but setting the teeth will damage either the tooth itself or create some cracks.
We supply Wood Mizer with material but they receive a hardened & tempered strip between 44 – 46 HRC, as all the other wood band saw manufacturer as well.
I strongly believe that band saw under 100 mm can be produced out of AISI 6150 or C 67 – C 75, no more expensive steel needed.
Above 100 mm you may think of using C 75 with 2% Nickel which helps on setting and flexibility of the wide blade itself.
But again, we are not the wood band saw experts, you and all other wood band producers are the experts in this field.
We just supply what our customers require and we can then produce the best achievable quality on the steel.
The machines you have attached from you tube seems O.K. to me and well known on the market.
I think you will have to invest in order to obtain a good band saw blade which has success on the market, there is no short cut on production if you want to achieve a good blade.
Buying the blade hard as you asked will not help you to get there, I’m sure.
There is nothing more I can add to this topic.
Please let me know how we can help you with good quality steel, at the end, you have to be able to produce it in good quality too.