The inventory decline of chemical composition of nm400 has slowed down significantly

chemical composition of NM400 Weldability refers to the performance of the weld joint with the expected quality requirements obtained by common welding methods under specific structure and process conditions. Weldability is generally judged by the crack sensitivity and the change of mechanical properties of weld zone. The ability of steel materials to withstand bending without cracking at room temperature is called cold bending. The greater the bending capacity before crack, the better the cold bending performance of the steel material.

The thickness of the wear-resistant layer is uniform and the surface is smooth. The flatness of the whole wear-resistant steel plate is equivalent to that of the ordinary carbon steel plate, chemical composition of NM400. There is a stress release crack on the surface of the wear-resistant layer, which only exists in the hardfacing layer and does not extend into the matrix. The stress release crack can greatly reduce the residual stress and deformation of the matrix during the surfacing process, thus avoiding the reduction of the matrix strength and not affecting the service performance of the wear-resistant steel plate.

Our strutural steel plates are not attacked easily by the chemicals in harsh weather. They are a hard, strong, and durable product. Their characteristics are tested through tests. We perform hardness, pmi, micro, chemical, mechanical, macro, ultrasonic test and more. We pack carbon steel plates, chemical composition of NM400, hot rolled plates, structural steel sheets safely to maintain their good performance so that they serve longer than usual.

After-sales service team is a key department to test the steel quality. Product quality is always the foundation of our survival and development. The company's full inspection from raw materials to finished products; and implements standardized, scientific, and strict internal quality control and management systems in accordance with the process flow during the production process; products can only leave the factory if qualified, and follow-up problem solving systems are implemented in after-sales services to guarantee the customers’ interest.