Ship plate nm300 steel equivalent grades

The nm300 steel equivalent grades plate products have passed the EU CE certification, and have been recognized by China, France, the United States, the United Kingdom, Germany, Italy, Japan, South Korea and other eight classification societies for high-strength ship plates. The steel strand products have passed the United States (PTI) certification. The nm300 steel equivalent grades products enjoy a high reputation in the domestic and foreign markets. The products are applied to national key projects and sold to 37 countries and regions such as EU, Middle East, Southeast Asia and America.

Mo alloy boiler steel plate nm300 steel equivalent grades is mainly used for building pressure vessels.The minimum yield strength of SB480M shall be above 275Mpa, and tensile strength of SB480M shall be within 480-620Mpa. For boiler steel plate SB480M with thickness exceeding 38mm shall be normalized when rolling,and belows or equal to 38mm thickness, as rolled is ok. Besides, ultrasonic test is necessary,and high tension, simulated post welded heat treatment shall be chosen by the end users.

Bridge steel nm300 steel equivalent grades is required to have higher strength, toughness, load and impact of rolling stock, and good fatigue resistance, low temperature toughness and atmospheric corrosion resistance. With the development of domestic railway construction towards high speed and heavy load, railway bridge steel developing in the direction of high speed, heavy load, long span, beautiful and novel structure, and full welding, higher requirements are imposed on the properties of steel for bridges. In particular, the development of cross-sea bridges has put forward higher requirements on the corrosion resistance of steel for bridges.

Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized nm300 steel equivalent grades are higher than that of annealed nm300 steel equivalent grades, but the elimination of internal stress is not as good as annealing. The normalizing operation of nm300 steel equivalent grades is simple, the cost is low, the productivity is high, and it is widely used in actual production.

nm300 steel equivalent grades, Q345C low alloy structural steel plates stock and size available: 13*2600*3800, 11*2890*3950, 14*1580*4700, 15.1*1600*3300, 14*1820*3050, 32*3200*2950, 11*2530*2450, 14*2000*3400, 12.7*2320*13200, 14*2720*3300, 32*2000*2950, 11*2250*2700, 26*1830*3650, 6*1800*4000, 14*1850*3350, 36*1700*2800, 12*3770*6600, 32*1900*3500, 15*1050*10000, 12.5*2810*3750,33*1500*3200, 45*1800*2650, 65*1700*2600 (mm).

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