1. Basic properties
Material type
WCB is a cast carbon steel grade in the ASTM standard, corresponding to my country's 25# or 35# cast steel.
Chemical composition
The main components include carbon (≤0.30%), manganese (≤1.0%), silicon (≤0.60%), phosphorus (≤0.04%), sulfur (≤0.045%), etc., which belong to the category of low carbon steel.
2. Performance and application
Mechanical properties
It has medium strength and good machinability, and is suitable for valve manufacturing under normal working conditions, such as pipelines, flanges and valve housings.
Applicable scenarios
It is widely used in pipeline systems for non-corrosive media such as water, steam, and oil.
Due to its low cost and mature technology, it has become one of the oldest and most widely used valve materials.
3. Marking specifications
Marking significance
The valve marked "WCB" indicates that its valve body material is cast carbon steel, and other parts may be made of different materials (such as A105 forgings).
Relationship with other materials
WCB forgings correspond to A105 carbon steel. The two have the same composition but different processing techniques (casting vs forging).
4. Notes
Corrosion resistance limitations
WCB is not suitable for strong acid, alkaline or high chloride media environments. Higher grade materials (such as stainless steel) must be selected according to the characteristics of the media.
