What kind of steel is grade S355J0WP steel?

The company adopts the grade S355J0WP steel international advanced management system, and has passed the certification of ISO9001 quality management system, ISO14001 environmental management system and GB / T28001-2001 occupational health and safety grade S355J0WP steel management system, and has realized the comprehensive integration of the three systems. In the future development path, the company will adhere to the guidance of scientific development concept, accelerate the implementation of six development strategies, namely, the main business development strategy, cost leading strategy, science and technology innovation strategy, management upgrading strategy, green steel strategy, and Harmonious Co construction strategy, promote the company's sustainable development, and build the company into the most competitive modern steel group.

41Cr4 (1.7035) material is an alloy structural steel grade commonly used internationally. Its tensile strength, yield strength and hardenability are all higher than that of 40# steel, but it also has certain defects that its weldability is limited and there is a tendency to form cracks. 41Cr4 steel is generally used for more important quenched and tempered parts, such as parts that work under alternating loads, medium speed and medium load parts.

We have 4 typical production lines grade S355J0WP steel, which can produce hot rolled Seamless, LSAW, ERW and SSAW pipes. The Seamless pipe production line range is OD 10.3mm-965.2mm, wall thickness 1.0mm-60mm, Annual capacity is 500 thousand tons. LSAW pipe production line range is OD 406mm-1524mm, wall thickness 6mm-50mm, Annual capacity is 150 thousand tons.

The microstructure of the quenched and tempered alloy steel, grade S355J0WP steel after conventional heat treatment is tempered sorbite. For parts with wear-resistant surface (such as gears and spindles), induction heating surface quenching and low-temperature tempering are carried out, and the surface structure is tempered martensite. The surface hardness can reach 55HRC-58HRC. After quenching and tempering, the yield strength of quenched and tempered alloy steel is about 800MPa, the impact toughness is 800kJ / m2, and the core hardness is 22HRC - 25HRC. If the cross-section size is large but not quenched, the properties will be significantly reduced.

Chemical composition(%) of A213 T36 steel pipe(Carbon: 0.10–0.17, Manganese: 0.80–1.20, Phosphorus: 0.03, Sufur: 0.025, Silicon: 0.25–0.50, Nickel: 1.00–1.30, Chromium: 0.3, Molybdenum: 0.25–0.50, Vanadium: 0.02, Niobium: 0.015–0.045, Nitrogen: 0.02, Aluminum: 0.05, Cu 0.50–0.80). Mechanical properties for grade S355J0WP steel, A213 T36 steel pipe: Tensile strength(min): 415Mpa; Yield strength(min): 205Mpa; Elongation: 30%; Hardness, HB: 163max.

Hot rolled plates are known for their superior mechanical properties over commodity grades of merchant bar. The hot rolled grade S355J0WP steel plates products are made to specific chemistry and mechanical properties ranges, allowing them to be used in engineered applications. Resulting shafts, axles, and gears can be used in the automotive grade S355J0WP steel industry and agriculture equipment. A36 mild steel has good strength, formability, and excellent welding properties. We also can supply welding, fabricating, and bending service.

The company focuses on two markets at home and abroad, and has a group of 56 experienced sales elites and professional and technical personnel. It can provide customers with drawing design, grade S355J0WP steel deep processing services and installation solutions. 20 years of project experience has provided high-quality carbon steel, alloy steel products and high-quality after-sales service to customers in many countries around the world. The company has won widespread praise from customers.