A105 round steel is an American ASTM A105/A105M standard for carbon steel forgings for pipeline components, where A represents ordinary carbon structural steel. Widely used in the manufacturing and production of high-pressure vessels, petrochemical fittings, valves, and flanges. Because this standard only specifies one type of carbon steel forging, A105 is also considered a forged carbon steel grade. A105 is a low-carbon steel forging, similar to 20 # steel. There are two standards, one is the American standard ASTMA105/A105M Carbon Steel Forgings for Pipeline Components, and the other is the Chinese standard GB/T12228-2006 Technical Conditions for Carbon Steel Forgings for General Valves.

The main difference between 304 and 316 is in terms of corrosion resistance and usage scope. In terms of content, the nickel content of 304 is generally 8%, while that of 316 is 10%, and 316 also contains 2% molybdenum element. So in terms of corrosion resistance, 316 is stronger than 304, which is why in some public facilities or coastal cities, 316 is the most common product.And 316 stainless steel contains Mo, which has better corrosion resistance than 304 stainless steel in high-temperature environments. Therefore, engineers generally choose components made of 316 material in high-temperature environments.

The difference in axial and radial mechanical properties of forgings is smaller than that of rolled products. In terms of the degree of transformation, the degree of deformation of the forging is much greater than that of the rolling, which means that the effect of breaking eutectic carbide through forging is better than that of rolling. In terms of processing cost, the cost of forging is much higher than the cost of rolling. Forgings have complete metal flow lines.