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WCB valves are made from wrought carbon steel with a maximum carbon content. They are commonly used in industrial applications where corrosion resistance is not the primary concern. WCB carbon steel offers good strength, durability, and can withstand a wide temperature range.
These WCB valves are manufactured in accordance with standards such as ASTM A216 and ASME B16.34, ensuring quality and adherence to mechanical property and dimensional requirements.
Main WCB Valve types:
WCB Gate Valve
WCB Ball Valve
WCB Globe Valve
WCB Check Valve
WCB Butterfly Valve
WCB stands for "Wrought Cast Carbon Steel, Grade B" in valves and refers to an ASTM A216-defined cast carbon steel material. Cast steel is a general name for iron-based alloys that solidify without undergoing eutectic transition, resulting in higher toughness and ductility than cast iron. WCB is widely utilized in valve manufacture due to its great mechanical strength, weldability, and resilience to high temperatures and pressures.
Material Composition: WCB valves are made from wrought carbon steel, which primarily consists of iron and carbon. The carbon content in WCB typically ranges from 0.25% to 0.30%. Additionally, WCB may contain small amounts of other elements, such as manganese, silicon, and trace amounts of sulfur and phosphorus.
Strength and Durability: WCB carbon steel offers good strength and durability, making it suitable for a variety of valve applications. It provides excellent toughness and can withstand high-pressure and high-temperature conditions.
Corrosion Resistance: Carbon steel, including WCB, is susceptible to corrosion in the presence of moisture and certain corrosive environments. Therefore, WCB valves are generally not recommended for use in applications where corrosion resistance is a primary concern. If the application involves corrosive fluids, it is advisable to consider valves made from corrosion-resistant alloys or coated carbon steel options.
Applications: WCB valves are commonly used in industrial applications where corrosion resistance is not the primary requirement. They find extensive use in industries such as oil and gas, power generation, chemical processing, and general industrial processes. WCB valves are suitable for handling a wide range of non-corrosive fluids, gases, and steam.
Temperature Considerations: WCB carbon steel valves can withstand a wide temperature range, making them suitable for both high-temperature and low-temperature applications. However, it is important to consider the specific temperature and pressure ratings provided by the manufacturer to ensure the valve's suitability for the intended temperature conditions.
Standards and Certification: WCB valves are manufactured in accordance with various international standards, such as ASTM A216 and ASME B16.34. These standards ensure the quality, mechanical properties, and dimensions of the valves.
| Property | WCB Valve | WCC Valve |
| Carbon Content | 0.30% | 0.25% |
| Manganese Content | 1.00% | 1.20% |
| Silicon Content | 0.60% | 0.60% |
| Sulfur Content | 0.04% | 0.04% |
| Phosphorus Content | 0.04% | 0.04% |
| Residual Elements | 1.00% | 1.00% |
| Tensile Strength | 70 to 95 ksi | 70 to 95 ksi |
| Yield Strength | 36 ksi | 40 ksi |
| Elongation (2 in.) | 22% Min | 22% Min |
| Reduction of Area | 35% Min | 35% Min |
WCB and WCC are both standard designations for cast steel materials that meet the ASTM A216 standard.
WCB offers a balance of strength, ductility, and corrosion resistance, and is typically used for projects that require reliable performance under moderate operating conditions.
WCC, on the other hand, offers higher pressure and temperature resistance than WCB, making it more suitable for high pressure environments and therefore more expensive. However, a small increase in physical properties does not usually justify the higher price. As a result, WCB valves are used more frequently in industry.
