Special Materials
Monel Fittings & Flanges
Monel fittings and flanges (Alloy 400 and K500) are nickel-copper alloys with outstanding resistance to seawater, brackish water, hydrofluoric acid, and reducing media. Monel K500 adds precipitation hardening for higher strength. These alloys are the standard choice for marine and naval applications. Shree Raj Steels supplies Monel fittings to ASTM B366 and flanges to ASTM B564.
Size: 1/2" – 24"Standards: ASTM B366 (Fittings), ASTM B564 (Flanges/Forgings), ASME B16.9

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Full material traceability & mill test certificates.
Technical Specifications
| Size Range | 1/2" – 24" |
|---|---|
| Products | Elbows, Tees, Reducers, Caps, Flanges |
| Pressure Class (Flanges) | 150, 300, 600, 900, 1500 |
Surface Finish / Coating
BarePickledAnti-Rust Oil
Available Grades
Exotic / Special Alloys
- Monel 400 (N04400)
- Monel K500 (N05500)
Applications
Marine & Naval Equipment
Seawater Handling
Chemical Processing (HF Acid)
Hydrocarbon Processing
Valves & Pumps
Key Features
- Outstanding seawater resistance
- Excellent HF acid resistance
- High strength (K500)
- Non-sparking (safe for hazardous areas)
- NACE MR0175 compliant
Manufacturing Standards
ASTM B366 (Fittings)
ASTM B564 (Flanges/Forgings)
ASME B16.9
ASME B16.5
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