Alloy 20 is a nickel-iron-chromium based, austenitic alloy with excellent corrosion resistance in chemical environments containing sulfuric acid and many other aggressive media. This alloy is stabilized with niobium to resist intergranular corrosion. Alloy 20 may provide potential cost savings when carefully compared to higher nickel-based alloys, while out performing standard stainless steels.
The pipe is a hollow, long section of steel with no joints around it. The thicker the wall thickness of the product, the more economical and practical, and the thinner the wall thickness, the processing cost will rise significantly. The process of the product determines its limited performance, the wall thickness is not uniform, the external brightness of the tube is low, the measurement cost is high, and the internal surface is not easy to remove pockmarks and black spots; Its detection and molding must be handled offline. Therefore, it embodies the advantages of high pressure, high strength and mechanical structure materials.
Chemical composition and physical properties of Alloy 20/UNS N08020/W.Nr.2.4660