| | | | | | | | 25 30 EM 80 | 100 | 2 3 10 15 | 2 3 | | | 25 30 15 20 | 2 3 | | 0.3 0.5% | 3 | 5 5 6 8 | 10 | C | 0.1 0.2% C | 2 3 7 10 | 3 5 | | |