The company has sufficient inventory and complete varieties and specifications. In line with the sales principle of low price operation and quality first, let customers buy A709 grade 50S bridge steel plate at ease and use it comfortably! Integrity, professionalism and efficiency are our service tenets. We will wholeheartedly provide excellent A709 grade 50S bridge steel plate products and high-quality services for new and old customers. We also sincerely welcome new and old customers to call and write to discuss business and guide work!
From the ship plate to our building materials, steel plate is needed everywhere in our daily life. The quality of A709 grade 50S bridge steel plate, steel plate is also related to each of us. Therefore, the quality of steel plate should be strictly controlled from manufacturer to the user. Once there are quality problems with steel plate, it is very easy to generate major events endangering people's lives.
The wear-resistant plate A709 grade 50S bridge steel plate shows good wear resistance: the chemical composition of the alloy layer contains 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%, the macro hardness is HRC56-62, and the hardness of chromium carbide is HV1400-1800. Because of the vertical distribution of carbides in the wear direction, the wear resistance of the cast alloy with the same composition and A709 grade 50S bridge steel plate hardness is more than twice as that of the cast alloy with the same composition and hardness. Compared with several typical materials, the wear resistance is as follows: (1) compared with low carbon steel; 20-25:1 (2) with as cast high chromium cast iron; 1.5-2.5:1.
According to the hardness from HB400 to 600, wear-resistant plates can be divided into NM400, NM450, NM500, NM550, NM600 and so on. Because of its toughness, the wear plate can accept impact, sensation, bump, scratch and prick day after day. With its good processing performance, wear-resistant plate, A709 grade 50S bridge steel plate can be bent, formed and welded, and can prevent the occurrence and propagation of cracks, which is also the reason why wear-resistant plate can be used as structural steel.
The difference of chemical composition between A709 grade 50S bridge steel plate, Q420D steel and Q460D steel: Chemical composition of Q420D steel: C ≤ 0.20, Si ≤ 0.50, Mn ≤ 1.70, P ≤ 0.030, S ≤ 0.025, Nb ≤ 0.07, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.80, Cu ≤ 0.30, N ≤ 0.015, Mo ≤ 0.20, Al ≥ 0.015. Chemical composition of Q460D steel: C ≤ 0.20, Si ≤ 0.60, Mn ≤ 1.80, P ≤ 0.030, S ≤ 0.025, Nb ≤ 0.11, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.80, Cu ≤ 0.55, N ≤ 0.015, Mo ≤ 0.20, B ≤ 0.004, Al ≥ 0.015. The difference of mechanical properties between A709 grade 50S bridge steel plate, Q420D steel and Q460D steel: The mechanical properties of Q420D steel: yield strength ≥ 420 MPa, tensile strength 500-680 MPa. The mechanical properties of Q460D steel: yield strength ≥ 460 MPa, tensile strength 500-720 MPa.
Our company has its own steel plate manufacturing plant, processing plant and steel pipe plant. We can machine the steel according to the A709 grade 50S bridge steel plate 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 A709 grade 50S bridge steel plate steel products, please tell me your specific needs, we have professional business personnel to communicate with you.
The after-sales service personnel understand the user's ideas and needs in detail, and stand on the other side's position and interests. Actively communicate with users and help them solve practical problems. This not only solves the service problem, but also improves the customer's trust in the company.
