Why KROT Ripper Shanks Hardness Only 380-400HB?

Our competitors claim 500HB ripper shank hardness – this is advertising. For this product, the main indicators of impact strength and yield strength of steel. Each steel grade has its own “working” hardness. Our company uses steel grades with ideal balance at hardness of 380-400 HB. High hardness values are an attempt to hide low grade steels under high numbers.