The hardness of usage of NM400 steel plate hot rolled

The alloy steel plates usage of NM400 steel plate are among our main steel products. There are various alloy steel grades on the market. The most popular alloy steel materials are European material under EN10083-3 and Chinese material under GBT3077 for round bars and GBT11251 for plates. Our typical alloy steel grades are 51CrV4, 25CrMo4, 34CrMo4, 42CrMo4, 12Cr1MoV, 20Cr, 40Cr, 15CrMo, 30CrMo, 35CrMo, 42CrMo, etc.

Our company specializes in the production of steel plates, steel coil, steel sections, welded pipes and seamless pipes products, sales of GB, ASME, ASTM, JIS, DIN, EN, API and other standards and specifications of steel usage of NM400 steel plate and deep-processed products, facing the domestic and foreign markets, welcome to call for inquiries. It is a modern high-tech professional enterprise integrating scientific research, production and sales.

we also provide the usage of NM400 steel plate welding service for customers, and our welding method, hand arc welding, submerged arc welding and tungsten argon arc welding, melting polar gas shielded welding and so on. And we have lots of successful usage of NM400 steel plate welding project, such as longitudinal submerged arc welding pipe, welding cross colume, prestressed truss and welding box colume.

Oxygen is a harmful element in usage of NM400 steel plate steel. With the increase of oxygen content, the strength of usage of NM400 steel plate steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of usage of NM400 steel plate steel.

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