?????? ???????? ??????????? ????? ?????, ????? ????? ??, ??????? ??????? ?????????? ????? ??????? ??? ??, ???? ?????? HRC60 ????? ??? ??? ??, ????????? ???????? ????????? ???? ??????? ??, ???? ???? ??????? ?????????? ???? 3-5 ???? ????? ??; - ????????????? ??????? ???????? ????, ?????????? ??????? ??????? ??? ?? ??? ????????? ?????? ???????? ??? ???? ??, ?????????????????, ?????????? ??? ????????? ?????????? ?????? ????????????? ??????????? ????? ???? ???? ?????????? ??????? ?????? HRC58-HRC62 ???? ??????; ???? ??????????, ????????? ????? ????????? ???-?????????? ??????? ?????? ≤ HRC32 ??; ??? ???? ??????????? ???? ????????? ??? ??, ??? ???? ????? (???? ???) ?? ??? ????? ??? 5g ?? ???? ??? ???? ????????? ??? ??, ?? ?????? ??????? ??????? ????? ??? ??. ??????