The difference between 15CrMo and 15CrMoG
The difference between 15CrMo and 15CrMoG
The Difference between 15CrMo Alloy Steel Pipe and 15CrMoG Alloy Steel Pipe
15crmo alloy steel pipe is a common alloy carbon steel, the implementation of standards for the GB3087, 15CrMoG alloy steel pipe is a special high-pressure boiler, the implementation of standards for the GB5310.
15CrMoG alloy steel pipe
15CrMoG alloy steel pipe and its characteristics Purified hydrogen principle is used in high temperature environment, and bear a certain pressure at 300-500 ℃, to be purified hydrogen into the 15CrMoG alloy steel pipe side, the hydrogen is adsorbed in the 15CrMoG alloy In the steel pipe wall, since the 4d electron layer of palladium lacks two electrons, it can produce unstable chemical bonds with hydrogen (this reaction of palladium and hydrogen is reversible). Under the action of palladium, hydrogen is ionized to proton its radius Is 1.5 × 1015m, and the lattice constant of palladium is 3.88 × 10-10m (20 ℃), it can be through the 15CrMoG alloy steel pipe, under the action of palladium and electrons combined with the re-formation of hydrogen molecules from the 15CrMoG alloy steel pipe The other side of the escape. In the 15CrMoG alloy steel pipe surface, not dissociated gas is not through, so you can use 15CrMoG alloy steel pipe to obtain high purity hydrogen.
American Standard A213 T12 alloy tube A335 P12 alloy tube corresponding to the successful 15CrMoG alloy tube corresponding German standard 13CrMo44 alloy tube.
15crmo alloy steel pipe
15CrMo alloy steel pipe is widely used in the power industry, steel, at 500 ℃ -550 ℃ use has a high thermal strength. When the use of temperature greater than 550 ℃, its thermal strength significantly reduced. Usually 15CrMo alloy steel pipe is mainly used for steam parameters of 510 ℃ high pressure pipe, steam pipe, wall temperature of 550 ℃, such as the heat pipe.
15CrMo alloy steel pipe in the normal supply state of the microstructure of the ferrite plus pearlite, 15CrMo alloy steel pipe operating temperature in the range of 500 ℃ -550 ℃ long-term operation process, will produce pearlite ballification, alloying elements in solid solution and carbonation The redistribution of the material and the change of the structure of the carbide phase. The thermal and mechanical properties of the 15CrMo alloy steel tube are gradually reduced with the degree of pearlite spheroidization and the solidification of the solid solution, Even failing. Therefore, the pearlite spheroidization of 15CrMo alloy steel pipe has long been widely used to determine one of the important criteria for the reliability of the steel.
The same type of foreign steel, the former Soviet Union 15XM, the United States grades T12, P12, Japan's brand STBA22, STPA22 and Germany 13CrMo44 and so on.
