Delivery state of SA514 Gr E steel material

The company has formed a production scale of steel plates, steel pipes, steel profiles, and other products, with a planned layout of science, advanced SA514 Gr E steel material technology and equipment, reasonable resource allocation, environmental protection, energy saving and high efficiency. BBN company has become a large-scale iron and steel enterprise integrating steel SA514 Gr E steel material production, mineral resource development, steel structure and engineering construction, real estate and modern logistics.

A283 Grade B steel plate chemical composition: Carbon, max %: 0.17, Manganese, max %:0.90 , Silicon, max%: 0.15-0.40, Phosphorus max%: 0.035, Sulfur max %: 0.040, Copper min %: 0.20 A283 Grade B steel plate mechanical propertyTensile strength, kis [MPa]:50-56[345-450]Yield strength, min, kis [MPa]: 27[185]Elongation in 8 in. [200 mm], min, %:25Elongation in 2 in. [50 mm], min, %: 28

The effect of nitrogen (N) on the properties of SA514 Gr E steel material and so on steel is similar to that of carbon and phosphorus. With the increase of nitrogen content, the strength of steel can be significantly improved, especially the plasticity, especially toughness, and the weldability will be decreased, and the cold brittleness will be intensified. At the same time, aging tendency, cold brittleness and hot brittleness will be increased, which will damage the weldability and cold bending property of steel. Therefore, the nitrogen content in SA514 Gr E steel material and so on steel should be reduced and limited as much as possible. Generally, nitrogen content should not be higher than 0.018%.

X-rays or γ-rays are projected on the surface of the steel plate, and rubber can be placed on the other side of the steel plate. Since the radiation propagates through the steel plate and is absorbed, the intensity is different due to the presence or absence of defects, so the film can record the shape and position of the defects. This SA514 Gr E steel material method is sensitive to the detection of common steel plate defects such as slag inclusions, porosity and pores. The disadvantage is that it is difficult to find the specific depth of the defect and it is not easy to find cracks.