What grade is equal to the JIS SM520B plates

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Q345qCNH grade is a weather-resistant structural steel for bridges. Bridge steel grade is Q345qC. It is produced by the standard GB / T714-2014. Weather-resistant bridge plate Q345qCNH is a kind of structural steel plate for bridge. Add a certain amount of alloy elements, such as P, Cr, Ni, Cu, Mo, etc. to the steel to form a protective layer on the surface of the metal substrate to improve the atmospheric resistance corrosive steel.

In the manufacturing process of boiler pressure components, raw materials must undergo complex processing deformation and welding, so the steel used to manufacture the boiler must also have good process performance. All materials JIS SM520B plates used to manufacture pressure parts must conform to the relevant national standards for boiler steel. The defects such as delamination, non-metallic inclusion, porosity and looseness in the steel shall be as few as possible, and white spots and cracks are not allowed.

The effect of nitrogen on steel performance is similar to that of carbon and phosphorus. With the increase of JIS SM520B plates nitrogen content, the strength of steel can be improved, plasticity especially toughness can be significantly reduced, weldability becomes worse, and cold brittleness is intensified. Nitrogen with aluminum, niobium, vanadium and other elements can reduce its adverse effects, improve the performance of JIS SM520B plates steel, can be used as an alloying element of low alloy steel.

The executive standard of P235TR1 steel is EN 10216-1. JIS SM520B plates, P235TR1 steel is suitable for manufacturing pipes, vessels, equipment, pipe fittings and steel structures. Chemical composition of P235TR1 steel: C ≤ 0.16, Si ≤ 0.35, Mn ≤ 1.2, P ≤ 0.025, S ≤ 0.02, Cr ≤ 0.30, Mo ≤ 0.06, Ni ≤ 0.30, Cu ≤ 0.30, Nb ≤ 0.01, Ti ≤ 0.04, V ≤ 0.02. Chemical composition of P235TR1 steel: tensile strength 360-500 MPa, yield strength ≥ 235 MPa, elongation ≥ 25%. The main steel pipe grades under EN 10216-1 are P195TR1, P195TR2, P235TR1, P235TR2, P265TR1 and P265TR2.

Our company has its own steel plate manufacturing plant, processing plant and steel pipe plant. We can machine the steel according to the JIS SM520B plates customer's requirements and meet the customer's requirements. If you want to ask any questions about steel products, please contact us directly. Our customer service staff will give you a detailed answer. If you want to purchase JIS SM520B plates steel products, please tell me your specific needs, we have professional business personnel to communicate with you.

Both parties shall confirm the JIS SM520B plates material object and the quality of the products, confirm the reasons for the defects and the quality of the products, and sign the quality inspection agreement. Major quality objections shall be reported to relevant leaders in a timely manner, and shall be discussed and solved with the JIS SM520B plates steel plant.