08 Cayenne· Registered
An "H" designation means its some sort of tool steel, probably some Cr & Ni and other expensive alloys. I'm sure the 10 tons is a full heat, when I buy steel, out of the normal specs, we have to buy in lots the same. I use a lot of tool steel, very tough stuff, used for rolls when rolling steel. Heck I throw away 6' long 40mm diameter rolls almost weekly, probably much better quality than a standard H grade. Are op rods machined from bar stock?