What material is used for the internal components of alloy steel valves?
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The operating temperature is 500°C and the operating pressure is 0.5 MPa; there is no corrosion issue. Alloy steel (WC6) valves are used, with Stellite alloy employed for their sealing surfaces. What material would be suitable for the valve internals (valve disc, valve stem)? 1Cr13, 304, or some other material?
Find a table that shows the lining materials suitable for valves below 540 degrees. Domestically produced
The valve body is already of this standard; for the internal valve disc, in addition to considering the properties of the fluid flowing through the pipeline, wear resistance must also be taken into account.
The valve disc can be either F11 or F22; for the valve stem, 38CrMOAlA will suffice. Of course, if the pressure is relatively low, then 304 or 316 can also be used. The diameter of the valve stem needs to be determined based on the stress conditions at the valve opening