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By certification 
Trademark B-B:
C 0.003 Si 0.01 Mn 0.13 P 0.009 S 0.006 Cr 0.02 Ni 0.02 Al 0.03 Cu 0.02
Trademark B-BC:
C 0.002 Si 0.01 Mn 0.08 P 0.006 S 0.005 Cr 0.01 Ni 0.01 Al 0.01 Cu 0.01
Trademark B-CC:
C 0.002 Si 0.003 Mn 0.02 P 0.005 S 0.005 Cr 0.01 Ni 0.01 Al 0.005 Cu 0.004
C 0.003 Si 0.01 Mn 0.13 P 0.009 S 0.006 Cr 0.02 Ni 0.02 Al 0.03 Cu 0.02
Trademark B-BC:
C 0.002 Si 0.01 Mn 0.08 P 0.006 S 0.005 Cr 0.01 Ni 0.01 Al 0.01 Cu 0.01
Trademark B-CC:
C 0.002 Si 0.003 Mn 0.02 P 0.005 S 0.005 Cr 0.01 Ni 0.01 Al 0.005 Cu 0.004
