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Monel

Monel Alloys—The Marine-Grade Nickel-Copper Solution

Monel 400 and K500 offer outstanding resistance to seawater, acids, alkalis, and pressure. Ideal for shipbuilding, chemical processing, oil tools, valves, and heat exchangers.

Monel Product 1 Monel Product 2 Monel Product 3
Monel 400 Strip
Monel 400 Strip
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Monel K500 Sheet
Monel K500 Sheet
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Monel R405 Bar
Monel R405 Bar
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What is Monel? - Jiangsu XuRui Metal

What Is Monel?

Monel 400 – 67% Ni + 30% Cu, excellent seawater & acid resistance
Monel K500 – Precipitation-hardened version of Monel 400 with higher strength & hardness

Monel® is a trademarked family of nickel-copper alloys known for their exceptional resistance to seawater and chemical corrosion, along with good mechanical strength and toughness.

The most used grades include:

Monel 400 – 67% Ni + 30% Cu, excellent seawater & acid resistance

Monel K500 – Precipitation-hardened version of Monel 400 with higher strength & hardness

Core Properties

  • Superior resistance to saltwater, hydrofluoric acid, and sulfuric acid
  • High strength and toughness, even at sub-zero temperatures
  • Maintains performance under high pressure and thermal stress
  • Excellent machinability, weldability, and fatigue resistance

Optional Monel Alloys Specifications

Monel 400 (UNS N04400), Monel K500 (UNS N05500)
Property Details
Forms Available Sheet, plate, pipe, tube, round bar, wire, flange, fittings
Grades Monel 400 (UNS N04400), Monel K500 (UNS N05500)
Standard ASTM B127 (sheet), B165 (pipe), B164 (bar), B366/B564 (fittings)
Plate Thickness 1mm – 80mm
Bar Size Ø6mm – Ø300mm
Pipe Sizes 1/2" – 12" NPS, SCH 10–XXS
Condition Annealed, hot forged, cold drawn, hardened & tempered
Certifications ASTM, EN10204 3.1/3.2, NACE MR0175, ISO, TUV
Applications & Processing Packaging
Applications
  • Chemical processing: reactors, heat exchangers, scrubbers
  • Waste treatment and desulfurization (FGD) systems
  • Pharmaceutical and biotech plants
  • Pulp & paper bleaching systems
  • Offshore & marine environments
  • Pickling line equipment and fertilizer plants
Hastelloy Industry Material

Processing & Packaging

Water jet, plasma or laser cutting
Water jet, plasma or laser cutting
Pipe threading, grooving, welding (GTAW)
Pipe threading, grooving, welding (GTAW)
Surface pickling, brushing, mirror polishing
Surface pickling, brushing, mirror polishing
Wood box packaging with desiccant
Wood box packaging with desiccant
ID barcode, heat number, test report per bundle or coil
ID barcode, heat number, test report per bundle or coil
Why Buy From mailongmetals?
Why Buy From mailongmetals?
  • Full stock of Incoloy 800/825 pipe, sheet, bar & wire
  • Cut-to-length, threading, CNC machining service
  • Weldability guidance + filler suggestions (e.g., ERNiCrMo-3)
  • Precision forging + solution annealing available
  • Corrosion simulation & technical support
  • Global supply network with fast dispatch
FAQ + Contact Form
Frequently Asked Questions
1. What are Incoloy alloys?
Incoloy alloys are high-performance nickel–iron–chromium alloys designed for excellent corrosion resistance, high-temperature strength, and long-term durability in harsh industrial environments.
2. What industries commonly use Incoloy alloys? +
They are widely used in petrochemical plants, heat-treatment equipment, offshore oil and gas systems, power generation, aerospace components, and marine engineering.
3. How are Incoloy alloys different from Inconel alloys? +
Incoloy contains more iron, making it more cost-effective for high-temperature and corrosion-resistant applications, while Inconel provides higher strength at extreme temperatures.
4. What are the most popular grades of Incoloy? +
Common grades include Incoloy 800, 800H, 800HT, 825, 901, and 925, each offering specific resistance to oxidation, acids, stress corrosion, and elevated temperatures.
5. Can Incoloy alloys withstand high temperatures? +
Yes. Grades like Incoloy 800H/800HT perform exceptionally well between 600–1100°C, offering excellent structural stability and oxidation resistance.
6. Are Incoloy alloys resistant to acid corrosion? +
Incoloy 825 and 925 are specifically designed for resistance to sulfuric acid, phosphoric acid, seawater, and chloride-related corrosion.
7. What product forms are available for Incoloy alloys? +
They are available in plates, sheets, coils, bars, rods, wires, tubes, fittings, and customized machined parts.
8. Can Incoloy alloys be welded easily? +
Yes. Incoloy alloys generally have good weldability using TIG, MIG, or SMAW methods, though proper pre-cleaning and heat control are recommended.
9. Do Incoloy alloys require special heat treatment? +
Some grades require solution annealing or stabilization treatments to achieve optimal mechanical properties and corrosion resistance.
10. How do I select the right Incoloy grade for my project? +
Selection depends on operating temperature, chemical environment, mechanical load, and required corrosion resistance. Providing your application details helps engineers recommend the best grade.
Let Us Know Your Required Grade

Whether You're Building A Heat Exchanger, Chemical Reactor, Or Marine Component, XuRui Offers Top-Quality Incoloy Materials With Full Certification And Global Delivery.