Monel
BMI supplies a complete range of Monel Nickel-Copper Alloys engineered for superior resistance to seawater, acids, and alkalis. Known for their excellent toughness, strength, and corrosion resistance — even in rapidly flowing seawater and steam — Monel alloys are trusted in the most demanding marine, chemical, and aerospace applications.
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Manufactured to international standards and sourced from reputed mills, BMI’s Monel products deliver reliability, consistency, and long service life. They are available in multiple product forms including sheets, plates, coils, pipes, tubes, bars, fittings, and flanges.
SPECIFICATIONS FOR EVERY REQUIREMENT.
GRADES
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Monel 400 (UNS N04400) – Nickel-Copper alloy with excellent corrosion resistance in seawater, acids, and alkalis.
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Monel K500 (UNS N05500) – Precipitation-hardened alloy offering higher strength and hardness while maintaining corrosion resistance.
Specialty grades available upon request.
STANDARDS
ASTM - B127 (Plate, Sheet, Strip), B163/B165 (Tube, Pipe), B164 (Rod, Bar), B366 (Fittings), B564 (Flanges)
ASME - SB127, SB163, SB164, SB366, SB564
EN / DIN - 2.4360 (Alloy 400), 2.4375 (Alloy K500)
ISO / NACE - MR0175 / ISO 15156 compliant for sour service
PRODUCT RANGE
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Sheets, Plates, and Coils
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Seamless and Welded Pipes & Tubes
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Round Bars, Rods, and Wires
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Pipe Fittings (Elbows, Tees, Reducers)
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Flanges (Weld Neck, Blind, Slip-On, Threaded)
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Fasteners, Valves, and Custom Machined Components
SIZE RANGE
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Pipes & Tubes: ½” NB to 8” NB
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Sheets & Plates: Thickness 0.5 mm to 50 mm
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Bars & Rods: 3 mm to 200 mm diameter
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Flanges & Fittings: Up to 24” NB Specific Dimensions are available upon request
TYPICAL MECHANICAL PROPERTIES
Tensile Strength: 480–620 MPa
Yield Strength (0.2% offset): 170–345 MPa
Elongation: 35% min
Density: 8.8 g/cm³
Melting Range:1300–1350°C
MAKE
We source and stock products regularly from:
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Special Metals Corporation
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ThyssenKrupp Materials Processing
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Nippon Steel and Sumimoto Metal Corp.
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KME GmbH
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VDM Metals
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Specific Makes are available upon request
MTC is always provided when you choose BMI
CHEMICAL COMPOSITION
Element Monel 400 (UNS N04400) Monel K500 (UNS N05500)
Nickel (Ni) 63.0% min (typically 63–70%) 63.0% min (typically 63–70%)
Copper (Cu) 28.0–34.0% 27.0–33.0%
Iron (Fe) ≤ 2.5% ≤ 2.0%
Manganese (Mn) ≤ 2.0% ≤ 1.5%
Silicon (Si) ≤ 0.5% ≤ 0.5%
Carbon (C) ≤ 0.30% ≤ 0.25%
Sulphur (S) ≤ 0.024% ≤ 0.010%
Aluminium (Al)— 2.3 3.15%
Titanium (Ti)— 0.35 0.85%
Other Elements Trace Trace
INDUSTRY APPLICATIONS.
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Marine & Offshore: Pumps, valves, propeller shafts, and seawater piping
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Chemical & Petrochemical: Heat exchangers, process equipment, and evaporators
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Aerospace: Fuel tanks, fasteners, and high-stress components
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Power Generation: Steam and condensate systems, turbine components
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Oil & Gas: Refinery piping, desalination, and sour gas service
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Pulp & Paper: Digesters and bleaching equipment
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Defense & Naval: Submarine components and saltwater-resistant systems