The difference between S275JR carbon steel plate sheet and Q235B

The company's main steel plate varieties: S275JR carbon steel plate sheet, boiler pressure vessel plate, low-alloy plate and high-strength plate, bridge plate, alloy plate, carbon steel, wear-resistant plate, pipeline steel, nuclear power steel, wind power and hydropower steel, ship plate, building structural steel, Die steel, military steel plate, hydrogen steel plate and various special steels, etc.

Q960 quenched and tempered steel executive standard: GB / T 16270. Q960 quenched and tempered steel grade classification: Q960C, Q960D, Q960E, Q960F. S275JR carbon steel plate sheet, Q960 quenched and tempered steel has high yield strength and tensile strength, and has great resistance to brittle failure. Q960 quenched and tempered steel has excellent low temperature toughness, so it can be used in large welding structures and low temperature environment.

The company has a mature technical team whose reponsibility is to design the drawing, choose suitable material and evaluate the whole production processaccording to customers’ requirement. The company is led by talents and technology, and comprehensively promotes its six business segments like steel material supply, precision steel casting, environmental protection equipment, household appliance, S275JR carbon steel plate sheet steel structures and oil tank projects. Seeking new developments in new technology and business areas, and fostering a large number of industry-leading, international-level projects.

Oxygen is a harmful element in S275JR carbon steel plate sheet steel. With the increase of oxygen content, the strength of S275JR carbon steel plate sheet steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of S275JR carbon steel plate sheet steel.