Alloy steel pipe is a type of pipe made by adding alloying elements such as chromium (Cr), molybdenum (Mo), vanadium (V), and nickel (Ni) to carbon steel. Compared with ordinary carbon steel pipes, the addition of alloying elements gives it better stability under high temperature, high pressure, and corrosive environments.
Common alloy steel grades and their characteristics are as follows:
12Cr1MoV: Contains Cr 0.90%–1.20%, Mo 0.25%–0.35%, and V 0.15%–0.30%. It has good high-temperature oxidation resistance and thermal strength, and is a typical representative of pipes used in power station boilers.
15CrMo: Contains Cr 0.80%–1.10% and Mo 0.40%–0.55%. Suitable for medium- and high-pressure boilers and superheaters.
Cr5Mo (P5/T5): Contains Cr 4.00%–6.00%. It has excellent corrosion and oxidation resistance, and is commonly used in petroleum refining and chemical plants.
The naming of these grades follows national standards, with the numbers representing the ten-thousandth fraction of the average carbon content, and the numbers after the element symbols indicating their approximate percentage.
Applicable Scenarios: Power station boilers, petrochemical plants, high-pressure vessels, and high-temperature piping systems.
