40Cr ?? 42CrMo ???? ????????? ????? ?????? ????, ???? ??????? ?????????? ???????????, ??????, ???? ????, ????????????????, ????? ????????? ? ????????, ?????? ??????? ?????? ???, ? ????????? ????? ???????? ???????? ????? HRC58- HRC62, ?????? ???????, ? ???? ???????????? ??? ??????? ???????? ???
???????? ???? ??? ?????? ?? ?? ????? ?????????????? ?? ???? ???? ???? ?? ???? ?????? ?: ????????? ???? ??????, ???????? ?????? ??? ??????, ????? ???? ???? ?????? ??????, ???? ?????? ?????? ???? ??????, ?????? ???? ???? ??????, ? ???? ?????? ???????
???? ?????????? ????????? ????????? ????? ????????? ????????? ????? ?? ???? ?????? ?????? ????? ????????????? ?????????, ???? ???? ?????? ?????? ? ?????? ?????????? ?????????? ?????????????? ??? ??????