Borlu Çelikler

18MnB4 30MnB5
19MnB4 32CrB4
20MnB4 33MnCrB5-2
25MnB5 33S17B
27MnCrB5-2 36CrNiB4
28MCB5 38B3
30M12CB B26
30MnB4 B30
30MnB4Cr 36CrB4