What is the most important characteristic of Q295NH weathering steel plate

The company specializes in the research and development, production and sales of Q295NH weathering steel plate seamless pipes, longitudinally welded pipes, large-diameter welded pipes, API 5L welded pipes, spiral welded pipes, and large-diameter thick-walled straight seam steel pipes. The company has Q295NH weathering steel plate five production lines in three major production workshops: large-diameter longitudinally welded pipe production workshop,Q295NH weathering steel plate rolled steel pipe production workshop, and thermally expanded steel pipe production workshop, with an annual production capacity of more than 100,000 tons.

A709GR50 steel plates are used in construction steel structure, construction machinery and other steel structures, such as construction steel structure, construction machinery, mining and mountain machinery, heavy trucks, bridges, pressure vessels, etc., especially for requirements with better weldability And tough construction and construction machinery parts. The product Q295NH weathering steel plate has been exported to South Korea, Taiwan and other places, and the cumulative export volume has reached more than 10,000 tons.

Good weldabilityBecause of its low carbon content, low alloy element content, good plasticity and low hardenability, this material Q295NH weathering steel plate is not suitable to have quenching structure or crack at the weld. The cold and hot pressure processing performance is good. Because of its good plasticity and small deformation resistance, it is not easy to produce cracks after pressure processing. Good corrosion resistanceUnder various atmospheric conditions, it has higher corrosion resistance than carbon steel.

The main function of boron in Q295NH weathering steel plate and so on steel is to increase the hardenability of steel, so as to save other rare and precious metals, such as nickel, chromium and molybdenum. For this purpose, the boron content is generally regulated in the range of 0.001% - 0.005%. It can replace 1.6% nickel, 0.3% chromium or 0.2% molybdenum. It should be noted that molybdenum can prevent or reduce temper brittleness, while boron slightly promotes temper brittleness, so molybdenum can not be completely replaced by boron.

A387 Gr 91 Cl 1 alloy steel is an option for use in sour service environments. The material has good weldability and with its heat resistant qualities, the material is a highly versatile steel which can be used in numerous applications.
A387 Gr 91 Cl 1 steel tensile requirements
Tensile strength, ksi [MPA]: 85 to 110 [585 to 760]
Yield strength, min, ksi [MPa]/(0.2% offset): 60 [415]
Elongation in 2 in. [50mm], min, %: 18

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