Monel 400 Sheets & Plates

What are Monel 400 Sheets & Plates?

Monel 400 (UNS N04400) is a solid-solution nickel-copper alloy known for its excellent resistance to corrosion, especially in marine and chemical environments. It offers high strength and toughness over a wide range of temperatures.

Key Functions:

• Provide excellent corrosion resistance in marine environments
• Ensure strength and durability in harsh conditions
• Perform efficiently under high pressure and temperature
• Offer long-term reliability with minimal maintenance

Chemical Composition of Monel 400

Typical Composition:

• Nickel (Ni): 63% – 70%
• Copper (Cu): 28% – 34%
• Iron (Fe): ≤ 2.5%
• Manganese (Mn): ≤ 2%
• Carbon (C): ≤ 0.3%
• Silicon (Si): ≤ 0.5%

This composition provides excellent resistance to seawater corrosion and chemical environments.

Key Features of Monel 400 Sheets & Plates

• Excellent resistance to seawater and marine environments
• High resistance to acids and alkaline solutions
• Good mechanical strength across a wide temperature range
• Superior resistance to stress corrosion cracking
• Excellent weldability and fabrication properties
• Good thermal conductivity
• Long service life in harsh environments

Mechanical Properties

• Tensile Strength: ~550–750 MPa
• Yield Strength: ~240 MPa
• Elongation: ~35%
• Hardness: Moderate

Physical Properties

• Density: ~8.8 g/cm³
• Melting Range: ~1300–1350°C
• Modulus of Elasticity: ~180 GPa
• Thermal Conductivity: ~21 W/m•K
• Thermal Expansion: Moderate

Corrosion & Oxidation Resistance

Monel 400 sheets and plates provide excellent resistance to:

• Seawater and marine environments
• Hydrofluoric acid and sulfuric acid
• Alkalis and salts
• Chloride stress corrosion cracking
• Industrial chemical environments

It is widely used in marine and chemical applications due to its exceptional resistance to corrosion.

Heat Treatment

Monel 400 is not heat-treatable for strengthening.

Process:

• Annealing: ~700–900°C
• Slow cooling

Strength is improved through cold working.

Weldability

Monel 400 offers excellent weldability.

Welding Methods:

• TIG (GTAW)
• MIG (GMAW)
• SMAW

Best Practices:

• Use suitable filler materials
• Maintain clean surfaces
• Control heat input
• Avoid contamination

Machinability

• Moderate machining difficulty
• Requires rigid tooling
• Use sharp carbide tools
• Maintain controlled cutting speeds with coolant

Standards & Specifications

• ASTM B127 / ASTM B906
• UNS N04400
• ASME SB127

Available Types of Sheets & Plates

• Hot Rolled Plates
• Cold Rolled Sheets
• Polished Sheets
• Perforated Sheets
• Custom Cut Sizes

Sizes & Specifications

• Thickness: 0.5 mm to 100 mm
• Width: Up to 2000 mm
• Length: Up to 6000 mm or as required

Surface Finish Options:

• 2B Finish
• No.1 Finish
• Mirror Finish
• Matte Finish

Applications of Monel 400 Sheets & Plates

• Marine Industry – Seawater piping and shipbuilding
• Chemical Processing – Acid handling equipment
• Oil & Gas Industry – Corrosive environments
• Heat Exchangers – Cooling and heating systems
• Power Plants – High-temperature components
• Food Processing – Equipment requiring corrosion resistance

Quality Testing & Inspection

• Chemical composition testing
• Mechanical testing
• Ultrasonic testing
• Surface inspection
• Positive Material Identification (PMI)

Mill Test Certificates (MTC) and third-party inspection reports are provided.

Packaging & Delivery

• Export-grade wooden packaging
• PVC protective coating
• Proper labeling and traceability
• Safe and timely global delivery

Why Choose Virami Steel Hub?

• Trusted Monel 400 supplier in Mumbai
• Large inventory and ready stock
• Competitive pricing
• Custom sizes and specifications
• Compliance with international standards
• Strong global export network
• Dedicated customer support

Conclusion

Monel 400 Sheets & Plates are an ideal choice for applications requiring excellent corrosion resistance, especially in marine and chemical environments. Their strength, durability, and resistance to harsh conditions make them suitable for critical industrial applications.

Virami Steel Hub delivers premium-quality Monel 400 products that ensure reliability, efficiency, and long-term performance.