The BBNSTEEL company has the first-class qualification for steel structure professional contracting, integrating production, design and installation, and can undertake various steel structure projects. The product has a wide surface, flat and smooth surface, and neat trimming. It has users in more than 10 provinces and cities in China and is exported to the United States, Canada, Japan, Europe, Southeast Asia and other countries and regions.
If A 515 grade 70 pressure vessel plates thick in 50mm or under this thickness, A709 Gr 50S bridge steel plate, A515 Grade 70 plates are supplied in the as-rolled condition. Normalizing treatment can be ordered, but those greater than 2 inch (50 mm) in thickness must be delivered in normalizing state. A515 Gr 70plate and sheet are widely used in petroleum, chemical industry, power station, boiler and other industries. It is used to make reactor, heat exchanger, separator, spherical tank, paint tank, liquefied gas tank, nuclear reactor pressure shell, boiler drum.
Grade Q420 steel has high strength, especially in the normalizing or normalizing and tempering state. A709 Gr 50S bridge steel plate, Q420 steel has high comprehensive mechanical properties. Q420 steel is mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, hoisting machinery, mining machinery and other large welded structural parts. Grade Q460 steel, with high strength, has high comprehensive mechanical properties in normalizing, normalizing and tempering or quenching and tempering states. The quality grades are C, D, E. Q460 steel is used in various large engineering structures and light structures requiring high strength and heavy load.
The microstructure of the quenched and tempered alloy steel, A709 Gr 50S bridge steel plate 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.
A514gr.F high yield strength structural quality steel chemical composition%C: 0.10-0.20, Si: 0.15-0.35, Mn: 0.60-1.00, P max.: 0.035, S max.: 0.035, Ni: 0.70-1.00, Cr: 0.40-0.65, Mo: 0.15-0.25, V: 0.03-0.08, Cu: 0.15-0.50, B: 0.001-0.005The mechanical properties in the plate thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥,%: 18
The high strength A709 Gr 50S bridge steel plate low alloy steel, which is shorten as HSLA steel, is one of our main products. We have professional team to serve you. For any demands or questions about HSLA steel, for example, ASTM A572 grade 50 chemical composition, difference between S355JR and S355J2, mechanical properties of A709 Gr 50S bridge steel plate ST52 steel, Q345B tensile strength, Q345D steel ASTM equivalent, HSLA steel price etc. , please do not hesitate to contact us and consult.
To provide customers with the most satisfactory service and realize the win-win of economic and social benefits, our company promises to provide excellent A709 Gr 50S bridge steel plate products in this bidding, and in line with the attitude of being serious and responsible to customers, before sending goods to users, the A709 Gr 50S bridge steel plate technical personnel shall confirm that there is no fault in the equipment before sending goods to users, and then send goods and products to users, and formulate the following service terms.
