Common materials for valve bodies

The common materials of the valve body and the heat treatment analysis of various materials, the valve body has a wide variety of materials, which are suitable for various working conditions. 1. Gray cast iron, suitable for low pressure valves with working temperature between -15~+200℃ and nominal pressure PN≤1.6MPa. 2. Black-heart malleable cast iron, suitable for medium and low pressure valves with working temperature between -15~+250℃ and nominal pressure PN≤2.5MPa. 3. Ductile iron, suitable for medium and low pressure valves with working temperature between -30~+350℃ and nominal pressure PN≤4.0MPa. 4. Carbon steel (WCA, WCB, WCC), suitable for medium and high pressure valves with working temperature between -29~+425℃, of which 16Mn and 30Mn working temperature are between -40~+450℃, which are often used in Replacing ASTMA105. 5. Low temperature carbon steel (LCB), suitable for low temperature valves and valves with working temperature between -46~+345℃. 6. Alloy steel (WC6, WC9), suitable for high temperature and high pressure valves of non-corrosive medium with working temperature between -29~+595℃; WC5, WC12 suitable for working temperature between -29~+650℃ High temperature and high pressure valves for corrosive media. 7. Austenitic stainless steel, suitable for valves with corrosive medium operating temperature between -196~+600℃. 8. Monel alloy, mainly suitable for valves containing hydrogen fluoride medium. 9. Cast copper alloy, mainly suitable for valves for oxygen pipelines with working temperature between -273~+200℃. The above lists are the main categories of commonly used materials for valve bodies. There are many different grades in each type of material, and various grades are suitable for various pressure levels. Therefore, when selecting the valve body material of the valve, the valve body material suitable for the working conditions should be determined according to different uses and different pressure levels. In addition, the valve body materials include titanium alloy (titanium valve), aluminum alloy (aluminum valve); plastic (plastic valve); ceramic (ceramic valve) and so on.
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