CCSB Marine Steel Sheet

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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
Grade	σb(MPa)	σb(MPa)	σ%	C	Mn	Si	S	P
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
Grade	σb(MPa)	σb(MPa)	σ%	C	Mn	Si	S	P
A32	315	440-570	22	≤0.18	≥0.9-1.60	≤0.50	≤0.035	≤0.035
D32
E32
F32	≤0.16	≤0.025	≤0.025
A36	355	490-630	21	≤0.18	≤0.035	≤0.035
D36
E36
F36	≤0.16	≤0.025	≤0.025
A40	390	510-660	20	≤0.18	≤0.035	≤0.035
D40
E40
	≤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

CCSB Marine Steel Sheet

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