NEWS

Applicable temperature range of commonly used materials for valve bodies


& nbsp; The working temperature and nominal pressure range of commonly used materials for valve bodies:
1. Grey cast iron, suitable for working temperatures between -15~+200 ℃, nominal pressure PN≤ 1.6MPa low-pressure valve
2. Black core malleable iron, suitable for working temperatures between -15~+250 ℃, nominal pressure PN≤ 2.5MPa medium and low pressure valve
3. Ductile iron, suitable for working temperatures between -30~+350 ℃, nominal pressure PN≤
4.0MPa medium and low pressure valve< br /> 4. Carbon steel (WCA, WCB, WCC), suitable for medium and high pressure valves with operating temperatures between -29~+425 ℃, with 16Mn and 30Mn operating temperatures between -40~+450 ℃, commonly used to replace ASTMA105
5. Low temperature carbon steel (LCB), suitable for low-temperature valves with operating temperatures between -46~+345 ℃ & nbsp;& nbsp;
6. Alloy steel (WC6, WC9), suitable for high-temperature and high-pressure valves in non corrosive media with operating temperatures between -29~+595 ℃; WC5 and WC12 are suitable for high-temperature and high-pressure valves with corrosive media operating at temperatures between -29~+650 ℃
7. Austenitic stainless steel, suitable for valves with corrosive media operating temperatures between -196~+600 ℃
8. Monel alloy, mainly suitable for valves containing hydrogen and fluorine media
9. Cast copper alloy, mainly suitable for oxygen pipeline valves with operating temperatures between -273~+200 ℃ The above are the major categories of commonly used materials for valve bodies, and there are many different grades of each specific material, which are applicable to various pressure levels. Therefore, when selecting the valve body material for a valve, it is necessary to determine the valve body material suitable for the working conditions based on different purposes and pressure levels In addition, the valve body materials include titanium alloy (titanium valve) and aluminum alloy (aluminum valve); Plastic (plastic valve); Ceramics (ceramic valves) and so on