Accreditation Administration System:
Shipbuilding Grade B with GL certificate, these plates shall be rolled completely under the
below table,then plates would be approved by GL agency and Mill test certificate shall be
stamped by them the same.
Adopting standard: GL
Relative Grades:GL A|GL B|GL D|GL E|GL AH32|GL AH36|GL AH40|GL DH32|GL DH36|GL DH40|
GL EH32|GL EH36|GL EH40|GL FH32|GL FH36|GL FH40
Property Data:
GL Grade T: 8-600MM GL A GL B GL D GL E Chemical Composition % ≤ C 0.21 0.21 0.21 0.18 Mn(≥) 2.5*C 0.80 0.60 0.70 P 0.035 0.035 0.035 0.035 S 0.035 0.035 0.035 0.035 Si 0.50 0.35 0.10- 0.35 0.10- 0.35 Al (acid) 0.035 0.035 0.035 0.035 Mechanical Property ≥ Yield Strength (Mpa) 235 235 235 235 Tensile Strength (Mpa) 400-520 400-520 400-520 400-520 Impacting Test temperature (℃) 20 0 -20 -40 Mark GL/A GL/B GL/D GL/E
H:Heat Analysis. P:Product Analysis
NOTE:The silicon contains of GL D and GL E have the minimum value limited,must above 0.1%,
however,there is no the same requirement for GL A and GL B.
