Alloy Steel Channel Cover Shell Side Flange SA336 F11 CL2
ALLOY STEEL CHANNEL COVER SHELL SIDE FLANGE ASME SA336 F11 CL.2
Material Specification: ASME SA336 F11 Cl.2
- SA336: ASTM/ASME standard for forged steel flanges, fittings, valves, and parts for high-temperature service.
- F11: Indicates Alloy Steel Grade F11, a chromium-molybdenum steel with good high-temperature strength and corrosion resistance.
- Class 2: Specifies the heat treatment condition (typically normalized and tempered for improved mechanical properties).
| Element | Min (%) | Max (%) |
| C | 0.1 | 0.2 |
| Mn | 0.3 | 0.8 |
| P | 0.025 | |
| S | 0.025 | |
| Si | 0.5 | 1 |
| Cr | 1 | 1.5 |
| Mo | 0.45 | 0.65 |
Application: Channel Cover (Shell Side Flange)
- Used in heat exchangers or pressure vessels as part of the shell-and-tube design.
- The channel cover seals the shell-side opening, allowing access for maintenance.
Design & Manufacturing Standards
Likely complies with ASME BPVC (Boiler & Pressure Vessel Code), Section VIII for pressure vessels.
Machined to match flange dimensions per ASME B16.5 (if standard) or custom design.
Key Considerations
- Pressure & Temperature Rating: Must be selected based on service conditions.
- Corrosion Resistance: Suitable for moderate corrosive environments (may require PWHT for weldments).
- Dimensional Standards: Flange facing (RF, FF, RTJ) should match mating components.
Test Certificate
Manufacturer Test Certificate as per EN 10204 / 3.1B
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