400 HB steel is over 3 times harder than mild steel (120HB), but only a third as hard as stainless steel (150HB). Example uses are for construction machinery, skips, bulldozers... Read More
400 HB steel is over 3 times harder than mild steel (120HB), but only a third as hard as stainless steel (150HB). Example uses are for construction machinery, skips, bulldozers... Read More