- You are here:
- Home /
- Products /
- Alloy /
- Monel Alloys
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.
What Is Monel?
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, 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
Products Link
Optional product specifications
| Property | Details |
|---|---|
| Forms Available | Sheet, plate, pipe, tube, round bar, wire, flange, fittings |
| Grades | Monel 400 (UNS N04400), Monel K500 (UNS N05500) |
| Standards | ASTM B127 (sheet), B165 (pipe), B164 (bar), B366/B564 (fittings) |
| Plate Thickness | 1mm – 80mm |
| Bar Size | Ø6mm – Ø300mm |
| Pipe Size | 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
- Shipbuilding & Marine Engineering: shafts, pumps, valves, fasteners
- Chemical Plants: heat exchangers, vessels, pipelines
- Oil & Gas: downhole tools, valves, couplings
- Acid Production Systems: HF acid, sulfuric, hydrofluoric acid environments
- Cryogenic Equipment: LNG handling components
- Mechanical Components: springs, shafts, fasteners
Processing & Packaging
Waterjet/plasma/laser cutting for sheet & bar
Precision turning for shafts & fittings
Ultrasonic (UT), X-ray (RT), PMI, hardness & tensile tests
Heat number + QR code marking
Wooden crate or seaworthy packaging with rust-proof wrapping
Why Buy From Xishang?
- Direct stock of Monel 400/K500 in various shapes
- Small MOQ & cut-to-length support
- CNC machining, drilling, threading & forming service
- Support for critical marine and chemical-grade applications
- Third-party testing (SGS, TUV) & PMI available
- Fast delivery to ports worldwide
Frequently Asked Questions
Q1: What is the key difference between Monel 400 and K500?
A:
K500 is age-hardened, offering significantly higher strength and hardness, while Monel 400 is softer but extremely corrosion-resistant.
Q2: Can Monel alloys be used in acid environments?
A:
Yes. Monel 400 is excellent for hydrofluoric and sulfuric acids, especially in non-oxidizing conditions.
Q3: Do you supply Monel pipes with NACE certification?
A:
Yes. Monel 400/K500 pipes can be supplied per NACE MR0175/ISO 15156 requirements.
Q4: What’s your minimum order quantity for Monel bar?
A:
As low as 1 piece for standard sizes in stock; 50–100kg for cut-to-length orders.
Q5: Can I request forged Monel flanges and fittings?
A:
Absolutely. We provide Monel socket weld/threaded flanges, elbows, tees, and custom forged components.
Let us know your required grade
From marine shafts to HF acid-resistant pipelines, Xishang provides certified Monel materials with machining and project-specific support.
