船舶是个复杂的系统工程，船上的每个部位，每个设备，每个零件都是由成千上万个金属、非金属材料构成，船用钢板作为最基本的材料在造船工程中起着举足轻重的作用。船用钢材主要包括船用钢板、型材（包括角钢、H型钢、T型钢，工字钢、球扁钢），以及船用钢管等，其中钢板是最主要的钢材。

Ship is a complex systematic engineering, every part of the ship, every equipment, every part is composed of thousands of metal, non-metallic materials, Marine steel plate as the most basic material plays a pivotal role in shipbuilding engineering.Marine steel mainly includes Marine steel plate, profile (including Angle steel, H-shaped steel, T-shaped steel, I-word steel, ball flat steel), as well as Marine steel pipe, among which steel plate is the most important steel.

船用钢板特点

Marine steel plate characteristics

一般强度船体结构用钢分为A、B、C、D4个等级，这4个等级的钢材的屈服强度（不小于235N/mm^2）和抗拉强度（400～520N/mm^2）一样，只是不同温度下的冲击功不一样。

The general strength hull structure steel is divided into 4 grades: A, B, C and D. The yield strength of these four grades of steel (not less than 235 N/mm ^ 2) is the same as the tensile strength (400 ~ 520 N/mm ^ 2), but the impact work at different temperatures is different.

造船用钢一般是指船体结构用钢，它指按船级社建造规范要求生产的用于制造船体结构的钢材。常作为专用钢订货、排产、销售，一船包括船板、型钢等。

Steel used for shipbuilding generally refers to the steel used for the hull structure, which refers to the steel produced for making the hull structure according to the requirements of the classification society construction code.Often as a special steel order, production, sales, a ship including ship board, type steel, etc.