Based on the advantages of ASTM A709 structural steel sheet steel resources in domestic market and good reputation, combining with the huge international market demand for steel products, our company started the international business in 2010 and successfully being approved and certified by ISO9001:2008, the Registration number is 626014Q11531R0S. With the quality steel ASTM A709 structural steel sheet products and professional service, our company was award the international acclaim from infrastructure, shipbuilding, petroleum industry etc., and gradually grow into a bright star in the steel export industry .
Phosphorus element (P element) is brought into steel by ore. Generally speaking, phosphorus is also harmful element. Although phosphorus can increase the strength and hardness of ASTM A709 structural steel sheet etc. steel, it also causes the decrease of plasticity and impact toughness. Especially at low temperature, it makes steel significantly brittle, which is called "cold brittleness". The higher the phosphorus content is, the greater the cold brittleness is. Therefore, the phosphorus content in ASTM A709 structural steel sheet etc. steel is strictly controlled.
The development of modern high-strength steel, ASTM A709 structural steel sheet is a process of gradually reducing the carbon content. The reduction of carbon content is beneficial to increase the toughness of steel on the one hand, and can significantly improve the welding performance of steel on the other hand. For large-scale steel structural parts with complex forces that require higher toughness and welding performance, a carbon content design of ≤0.10% is usually adopted.
The European steel industry has been hit hard by the coronavirus pandemic. The auto industry, the second largest consumer of ASTM A709 structural steel sheet and so on steel, was temporarily shut down, while construction, the biggest consumer, slowed sharply in the UK in the last week of March, experts reported. It can be expected that the current crisis (which is still intensifying) will have the same or even greater impact on the steel industry as the global financial crisis.
