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Monel 400/400AR Sheet & Plate

Monel 400/400AR Sheet & Plate (UNS N04400,2.4360)

Monel 400 and Monel 400AR (Alloy 400 and Alloy 400AR) are high-performance, solid solution-strengthened alloys primarily composed of nickel and copper. These alloys offer exceptional strength, corrosion resistance, and versatility, making them ideal for demanding applications in industries like marine, chemical processing, aerospace, and oil & gas. Monel 400AR, an enhanced version of Monel 400, offers similar properties with improvements tailored for specialized applications.

 

Key Features of Monel 400/400AR Sheet & Plate

  1. Corrosion Resistance: Both Monel 400 and 400AR excel in resisting a wide range of corrosive environments, especially seawater, acids, and alkaline solutions. They offer outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion, which makes them highly reliable in challenging environments.

  2. High Strength and Durability: These alloys maintain high tensile strength and mechanical properties at both ambient and elevated temperatures, making them suitable for high-stress applications. Monel 400AR features enhanced properties for improved performance in extreme conditions.

  3. Weldability and Fabrication: Monel 400/400AR can be easily welded, fabricated, and machined, making it adaptable for different industries. Both alloys are used in various forms, including sheets and plates, for manufacturing complex parts and components.

  4. Non-Magnetic: Both Monel 400 and 400AR are non-magnetic, which is an essential property for components in electronic and magnetic field-sensitive applications.

 

Technical Specifications:

  • UNS Number: N04400
  • W.Nr: 2.4360

Available Thickness

3/16″1/4″3/8″1/2″5/8″3/4″1″
4.8mm6.3mm9.5mm12.7mm15.9mm19mm25.4mm
1 1/4″1 1/2″1 3/4″2″2 1/2″3″
31.8mm38.1mm44.5mm50.8mm63.5mm76.2mm
inconel-400-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M

Worldwide Equivalent Grades of Nickel 400

CountryStandardGrade
USAASTMAlloy 330
GermanyDINX-8-8
FranceAFNORZ8CN20-09
UKBSNA 330
JapanJISNCF 330
ChinaGBGH330
ItalyUNI1.4864

 

Corrosion Resistance

  • Excellent resistance to corrosion in a wide range of environments, including seawater, hydrofluoric acid, sulfuric acid, and alkalis.
  • Highly resistant to chloride ion stress-corrosion cracking and pitting in marine and chemical environments.

Chemical Composition of Nickel 400

ElementComposition (%)
Nickel (Ni)63.0 – 70.0
Copper (Cu)28.0 – 34.0
Iron (Fe)2.5 max
Manganese (Mn)2.0 max
Silicon (Si)0.5 max
Carbon (C)0.3 max
Sulfur (S)0.024 max

Physical Properties of Nickel 400

PropertyValue
Density8.80 g/cm³ (0.318 lb/in³)
Melting Range1300-1350°C (2370-2460°F)
Tensile Strength70-100 ksi (485-690 MPa)
Yield Strength (0.2% Offset)25-50 ksi (170-345 MPa)
Elongation20-40%
Modulus of Elasticity26,000 ksi (179 GPa)
Hardness65 Rockwell B
Thermal Conductivity21.8 W/m·K (151 BTU·in/ft²·h·°F)
Electrical Resistivity5.15 µΩ·m (85.5 µΩ·cm)
Specific Heat Capacity0.427 J/g·K (0.102 Btu/lb·°F)
Coefficient of Thermal Expansion13.9 µm/m·K (7.72 µin/in·°F)

Mechanical Properties of Nickel 400

PropertyValue
Tensile Strength70-100 ksi (485-690 MPa)
Yield Strength (0.2% Offset)25-50 ksi (170-345 MPa)
Elongation in 2 in. (50.8 mm)20-40%
Hardness (Rockwell B)65-75
Impact Strength (Charpy V-notch)10-35 ft·lbf (13.6-47.5 J)
Modulus of Elasticity (Tension)26,000 ksi (179 GPa)
Fatigue Strength23 ksi (160 MPa) for 10^7 cycles
Poisson’s Ratio0.32

Fabrication Data

Forming:

  • Cold Forming: Easily cold worked by standard methods. Cold working increases the hardness and strength.
  • Hot Forming: Should be carried out in the temperature range of 1200-2150°F (650-1180°C).

Welding:

  • Methods: Can be welded by most conventional methods such as gas-tungsten arc welding (GTAW), gas metal arc welding (GMAW), and shielded metal arc welding (SMAW).
  • Preheating/Postheating: Not required but might be beneficial depending on the service condition.

Machining:

  • Generally difficult to machine due to its high work-hardening rate.
  • Use of heavy, rigid machines and tooling with slow speeds and ample lubrication is recommended.

Heat Treatment:

  • Annealing is typically done at 1700-1850°F (930-1010°C), followed by air cooling.
  • Stress relieving may be performed at 1200-1500°F (650-815°C).

Forging:

  • Should be performed in the range of 1700-2150°F (930-1180°C).
  • Material should not be forged below 1600°F (870°C).

Surface Treatment:

  • Surface finishing operations like grinding or polishing can be performed.
  • The surface should be free from foreign matter and contamination to avoid any issues with corrosion resistance.
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