Is it reasonable for SM400A carbon steel plate sheet quenching to get martensite

The company's SM400A carbon steel plate sheet steel products are sold all over the world with high quality and low price. We can process and cut all kinds of special-shaped parts according to your requirements, or we can set and roll futures of all kinds of material specifications according to your requirements, with fast delivery time. We sincerely welcome new and old customers from all walks of life to contact us for SM400A carbon steel plate sheet business negotiation. With the enthusiasm, good reputation and professionalism of our staff, we will provide excellent services to our valued customers in all aspects, so as to achieve common development and prosperity.

NM450 material is mainly to provide protection in occasions or parts where wear resistance is needed, so that the life of the equipment is longer. Then it can reduce the maintenance and downtime brought by maintenance, and accordingly reduce the investment of funds. SM400A carbon steel plate sheet, NM450 wear-resistant steel plate is widely used in engineering machinery, mining machinery, coal mine machinery, environmental protection machinery, metallurgical machinery, abrasive tools, bearings and other product parts.

S700MC high-strength cold-formed hot-rolled steel sheet SM400A carbon steel plate sheet more greatly improves the yield strength than traditional steel grades, and at the same time has good elongation performance, cold bending performance, welding performance and impact resistance. S700MC high-strength steel is mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, lifting machinery, mining machinery and other large-scale welding structural parts.

As the thickness and hardness of SM400A carbon steel plate sheet increase, the tendency to crack at the cutting edge increases. In order to prevent the SM400A carbon steel plate sheet from cutting cracks, preheating should be carried out before SM400A carbon steel plate sheet cutting. Special attention should be paid to preheating to make the entire SM400A carbon steel plate sheet interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole SM400A carbon steel plate sheet cannot be preheated, the partial preheating method can be used instead.

As to the Chemical composition, the different content is a main on carbon content, while the carbon content of SM400A carbon steel plate sheet, A283Gr. D is no more than 0.27% and it is higher than Grade C (≤0.24%) ; as to the mechanical property, the differences are tensile strength and yield strength, while the tensile strength of ASTM A283 Gr.D is 415-550MPa (60-80 ksi) and yield strength of ASTM A283 Grade D is 230MPa (33 ksi).

First of all, we should establish a correct concept of after-sales service. Service concept is an important part of corporate culture and a long-term enterprise value concept. Our company's after-sales service embodies the concept of "customer first, sincere service for customers". As long as we are in the "sincere service for users" under the guidance of the idea, I believe we will get rich returns.