??????????? ???? ??????? ??? ?????????? ?????? ???? ???? ??????????? ???? ????? ?????. ??????? ??? ???????? ???? ???, ????? ???? ???.

2. ?????? ??????????? ????:

????????? ??????????? 5A50 ??????? ?????: 265 ?????; 3 ? 21 ?? ??? ?????: <167 ?????;

??????????? 2A11: 370MPa ?? ?????? ?????; 2A12: 390 ~ 420MPa ?? ?????? ?????; 2A13: 315 5 345MPa ?? ??? ?????;

3. industrial??????? ????? ????????????? ??? ?????: 80 ~ 100 ?????;

Inc. ??????? ????? ? ????? ?? ?? ?????? ??????? ????? ??? ? ???? ???????? ??????? ?? ??? ?????? ???? ????? ??? ?????? ????? ??? ???? ??????? ??.