CF8M Stainless Steel Valve Body & Instrument Housing Precision Casting

CF8M Stainless Steel Valve Body & Instrument Housing Precision Casting

When your process demands absolute integrity — in pressure containment, corrosion resistance, and dimensional accuracy — our CF8M stainless steel valve body and instrument housing castings deliver. Manufactured using the lost-wax investment casting process, these components provide the complex internal geometries, pressure-tight walls, and superior surface quality required for critical fluid control and instrumentation applications across chemical, oil & gas, pharmaceutical, and marine industries.

Material Properties

• Grade: CF8M (cast equivalent of AISI 316 / 1.4408)
• Tensile Strength: ≥485 MPa
• Yield Strength: ≥170 MPa
• Hardness: ≤217 HB
• Molybdenum Content: 2–3% — superior resistance to chloride pitting and crevice corrosion
• Corrosion Resistance: Excellent in acids, alkalis, seawater, and aggressive process chemicals
• Temperature Range: Cryogenic to 870°C continuous service
• Pressure Rating: Suitable for high-pressure applications; custom wall thickness and pressure class available

Casting Process & Quality

• Process: Lost-wax investment casting for complex internal passages and precise port geometry
• Dimensional Tolerance: CT6 per ISO 8062
• Surface Roughness: Ra 3.2–6.3 μm as-cast; Ra 1.6 μm or better with post-machining
• Pressure testing: Hydrostatic pressure testing available per ASME / EN standards
• NDT options: Dye penetrant testing (PT), radiographic testing (RT), ultrasonic testing (UT) available
• Post-processing: CNC machining of seating faces, flanges, and threaded ports; passivation; electropolishing
• Standards compliance: Castings can be produced to ASTM A351 CF8M, EN 10213, or equivalent standards upon request

Key Features

• Pressure-tight integrity: Dense, void-free castings ensure leak-free performance in high-pressure fluid systems
• Complex geometry capability: Internal flow passages, bosses, flanges, and port configurations cast in a single piece
• Superior corrosion resistance: CF8M’s molybdenum content provides outstanding protection in chloride-rich and chemically aggressive media
• Precision seating surfaces: Machined valve seats and sealing faces ensure reliable shut-off and minimal leakage
• Versatile end connections: Flanged, threaded (NPT/BSP), socket weld, or butt weld configurations available
• Custom specifications: Pressure class, port size, face-to-face dimension, and connection type per your drawings or international standards

Applications

• Gate, globe, ball, and butterfly valve bodies
• Flow meter and pressure transmitter housings
• Chemical injection and dosing valve bodies
• Subsea and offshore valve assemblies
• Pharmaceutical and biotech process valves
• Cryogenic valve bodies (LNG, liquid nitrogen systems)
• Marine seawater service valves
• Oil and gas wellhead and pipeline valves

Custom Order Process

1. Submit your drawing (STEP, DXF, DWG, PDF) or sample, including pressure class and connection standard
2. Receive detailed quotation within 24–48 hours
3. Prototype and pressure test approval before mass production
4. Lead time: typically 35 days depending on complexity, testing requirements, and quantity

Ready to discuss your valve body or instrument housing requirements? Contact us for a custom quote — our engineering team specializes in complex precision castings for critical applications.