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CCSB Marine Steel Sheet

CCSB marine steel sheet is a grade B sheet certified by China classification society, not a specific material. According to their Y.S, hull structural steel can be divided in to normal strength hull structural steels and high strength structural hull steels. Marine steel sheet refers to the hot rolled steel sheet used for the manufacture of hull structure produced according to the construction code of classification society.
The normal strength hull structural steel of China classification society specification is divided into four quality grades: A, B, D and E (namely CCSA, CCSB, CCSD and CCSE);The high strength hull structural steels in the China classification society specification are three strength grades and four quality grades.
I. Mechanical properties and chemical composition of normal strength hull structural steel:
Grade Y.S T.S EL. C Mn Si S P
σb(MPa) σb(MPa) σ%
A 235 400-520 22 ≤0.21 ≥2.5C ≤0.5 ≤0.035 ≤0.035
B ≤0.21 ≥0.80 ≤0.35          
D ≤0.21 ≥0.60 ≤0.35          
E ≤0.18 ≥0.70 ≤0.35          
  II. Mechanical properties and chemical composition of high strength hull structural steel:
Grade Y.S T.S EL. C Mn Si S P
σb(MPa) σb(MPa) σ%
A32 315 440-570 22 ≤0.18 ≥0.9-1.60 ≤0.50 ≤0.035 ≤0.035
F32 ≤0.16 ≤0.025 ≤0.025          
A36 355 490-630 21 ≤0.18 ≤0.035 ≤0.035    
F36 ≤0.16 ≤0.025 ≤0.025          
A40 390 510-660 20 ≤0.18 ≤0.035 ≤0.035    
  ≤0.16 ≤0.025 ≤0.025          
III. Physical performance of CCSB:
Y.S (σb/MPa):≥22,T.S (σb/MPa):400~520,EL. (δ/%):≥22

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