- :86-371-86151827 86151527
- :0086-371-86011881
- :[email protected]
- :bebonchina
A387 Grade 11 Class 1 Analysis: A Comprehensive Overview of Performance and Applications
A387 Grade 11 Class 1 is a chromium - molybdenum alloy steel that occupies an important position in the manufacturing of pressure vessels and other fields. Conceptually, it belongs to the heat - resistant pressure vessel steel under the American standard ASTM system, designed for working conditions with high temperature, high pressure, and corrosion risks.
In terms of characteristics, it has outstanding high - temperature strength. In a high - temperature environment of about 500 °C, it can still maintain stable mechanical properties and excellent creep resistance, effectively resisting deformation caused by long - term high - temperature stress. At the same time, it has good corrosion resistance, with a certain ability to resist corrosion caused by media such as hydrogen sulfide and hydrogen. Moreover, it has good welding performance, which is convenient for splicing operations in pressure vessel manufacturing, and the quality of welded joints is stable.
The processing process includes steelmaking (using electric furnace or converter smelting to precisely control the content of alloy elements such as chromium and molybdenum to ensure component uniformity), rolling (processing the steel billet into the required plate specifications through hot rolling or cold rolling processes to optimize the internal structure of the steel), and heat treatment (normalizing + tempering is a key process. Normalizing refines the grains, and tempering eliminates stress and adjusts hardness to improve comprehensive performance). Subsequent strict quality inspection is also required, such as non - destructive flaw detection and mechanical property testing, to ensure that the steel quality meets the standards.
The application scope focuses on the manufacturing of pressure vessels in industries such as petrochemical and coal chemical industries, such as hydrogenation reactors, shift furnaces and other equipment. These equipment are in an environment with high temperature, high pressure, and corrosive media for a long time. A387 Grade 11 Class 1 provides guarantee for the safe and stable operation of the equipment with its high - temperature strength, corrosion resistance, and welding performance. It is one of the key materials for the manufacturing of high - temperature and high - pressure chemical equipment.