Premium Monel 400 K500 Slip-on Weld Neck Flanges
Premium Monel 400 & K500 Slip-On & Weld Neck Flanges | SSM
SSM is a leading manufacturer and global supplier of premium Monel 400 and K500 flanges, available in Slip-On (SO) and Weld Neck (WN) designs. These nickel-copper alloy flanges are engineered for corrosion resistance, high strength, and durability, making them ideal for marine, offshore, and chemical applications.
1. Product Overview
Monel 400 and K500 flanges are designed to provide reliable, leak-proof connections in severe operating conditions, including seawater, acidic, and high-temperature environments.
Standards: ASME B16.5 / ASTM B564 / Custom
Materials: Monel 400 (N04400) / Monel K500 (N05500)
Flange Types: Slip-On (SO) / Weld Neck (WN)
Pressure Rating: Class 150 – Class 2500
Applications: Offshore platforms, petrochemical plants, marine engineering, chemical processing
2. Material Composition
Monel 400 (N04400)
Nickel (Ni): 63 min
Copper (Cu): 28–34
Iron (Fe): 2.5 max
Excellent corrosion resistance in seawater, acids, and oxidizing environments
Monel K500 (N05500)
Nickel (Ni): 63 min
Copper (Cu): 28–34
Aluminum + Titanium: Adds high strength and hardness
Maintains mechanical properties at elevated temperatures
3. Mechanical Properties
| Material | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| Monel 400 | 690 – 850 MPa | 240 – 380 MPa | 30 – 45% | ≤ 250 HB |
| Monel K500 | 830 – 1000 MPa | 520 – 620 MPa | 20 – 35% | 280 – 330 HB |
4. Key Features
✅ High Corrosion Resistance: Excellent in seawater, acids, and marine environments
✅ Versatile Flange Types: Available as Slip-On and Weld Neck for easy installation
✅ Superior Strength: K500 variant offers enhanced tensile and yield strength
✅ Durable & Reliable: Maintains integrity under pressure and temperature fluctuations
✅ Standards Compliance: Manufactured to ASME B16.5, ASTM B564, or custom specifications
5. Advantages and Limitations
Advantages:
Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking
Long-lasting performance in marine, petrochemical, and offshore systems
Good weldability and machinability
Limitations:
Higher cost compared to carbon steel or standard stainless steel
Requires special handling and machining expertise
6. Applications
Offshore Oil & Gas Platforms
Marine Piping Systems
Petrochemical and Chemical Plants
Desalination Plants
Heat Exchangers and Pressure Vessels
7. Why Choose SSM
Over 30 years of experience in Nickel-Copper Alloy flange manufacturing
Certified ISO 9001 / EN 10204 3.1
Compliance with ASME B16.5, ASTM B564, and customer standards
Advanced forging, CNC machining, and NDT inspection
Fast global delivery and custom design services available
8. Conclusion
The SSM Monel 400 & K500 Slip-On and Weld Neck Flanges are engineered for maximum corrosion resistance, strength, and durability, making them the ideal choice for critical marine, offshore, and chemical piping systems.
Ensure safe, reliable, and long-lasting connections in harsh environments with SSM premium nickel-copper alloy flanges.
📩 Contact SSM today for a quotation or custom design for your Monel 400 or K500 flanges.
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