Nambari ya ASTM. | Fe max | O max | N juu | C max | H max | Pd | Al | V | Mo | Ni | Kurefusha | 0.2% ya Nguvu ya Mazao Min | Nguvu ya Mkazo Dak |
wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | wt% | % | MPa | MPa | |
Daraja la 1 | 0.2 | 0.18 | 0.03 | 0.1 | 0.015 | 24 | 170 | 240 | |||||
Daraja la 2 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 20 | 280 | 345 | |||||
Daraja la 3 | 0.25 | 0.3 | 0.05 | 0.1 | 0.015 | 18 | 380 | 450 | |||||
Daraja la 4 | 0.5 | 0.4 | 0.05 | 0.1 | 0.015 | 15 | 480 | 550 | |||||
Daraja la 5 | 0.4 | 0.2 | 0.05 | 0.1 | 0.015 | 5.5- | 10 | 830 | 900 | ||||
Daraja la 6 | 0.1 | 16 | 780 | 820 | |||||||||
Daraja la 7 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 0,12- | 20 | 280 | 340 | ||||
Daraja la 9 | 0.25 | 0.15 | 0.02 | 0.05 | 0.015 | 2,5- | 15 | 550 | 650 | ||||
Daraja la 11 | 0.2 | 0.18 | 0.03 | 0.1 | 0.015 | 0.12- | 24 | 170 | 240 | ||||
Daraja la 12 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | 0.3 | 0.8 | 25 | 414 | 499 | |||
Daraja la 13 | 0.5 | ||||||||||||
Daraja la 14 | 0.5 | ||||||||||||
Daraja la 15 | 0.5 | ||||||||||||
Daraja la 16 | 0.04- | 27 | 345 | 485 | |||||||||
Daraja la 17 | 0.18 | 0.04- | 35 | 206 | 345 | ||||||||
Daraja la 18 | 0.04- | 3 | 2.5 | 4 | |||||||||
Daraja la 19 | 3 | 8 | 4 | ||||||||||
Daraja la 20 | 0.04- | 3 | 8 | 4 | |||||||||
Daraja la 21 | 3 | 15 | 15 - 8 | 880 | 915 |
Muda wa kutuma: Mei-19-2020