Materials · Monel
Monel 400 fasteners
HAGUE FASTENERS makes Monel 400 fasteners to order: bolts, studs, nuts and machined parts in Monel 400, the nickel-copper alloy for seawater, hydrofluoric acid and alkalis, made to your drawing in our Willenhall facility.
N04400
Also NA13 and W.Nr 2.4360
63% Ni min.
Nickel with 28 to 34% copper
550 MPa
Typical tensile strength, annealed
1 to 500
Prototypes to batches of several hundred
About the alloy
The nickel-copper alloy for seawater and acids
HAGUE FASTENERS makes Monel 400 fasteners in the UK for marine, chemical and hydrocarbon plant. Monel 400 (NA13, UNS N04400) is a nickel-copper alloy with good strength and excellent corrosion resistance in a range of media, especially seawater, hydrofluoric acid, sulphuric acid and alkalis.
It is used for marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners and heat exchangers. Where more strength is needed, the age-hardened Monel K500 gives similar corrosion resistance at much higher strength.
At a glance
- Nickel-copper alloy
- For seawater, hydrofluoric and sulphuric acids and alkalis
- Listed in NACE MR-01-75
- Military and QQ-N-281 specifications
Composition
Monel 400 chemical composition
Percentage by weight.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | 63.00 | – |
| Carbon (C) | – | 0.30 |
| Silicon (Si) | – | 0.50 |
| Copper (Cu) | 28.00 | 34.00 |
| Manganese (Mn) | – | 2.00 |
| Iron (Fe) | – | 2.50 |
| Sulphur (S) | – | 0.024 |
| Phosphorus (P) | – | 0.030 |
| Lead (Pb) | – | .005 |
Properties
Mechanical properties (annealed)
Typical values in the annealed condition.
| Property | Value |
|---|---|
| Tensile strength | 550 MPa |
| Yield strength (0.2% offset) | 240 MPa |
| Elongation in 2 in (50 mm) or 4D | 48% |
This data is for general information only and may change without notice. HAGUE FASTENERS LIMITED believes it to be accurate but gives no warranty as to its accuracy or completeness and accepts no liability for its use. Actual properties may vary, and nothing here guarantees suitability for a particular use.
Equivalents and applications
Monel 400 equivalents and typical uses
Alternative designations
BS 3076 NA13, AFNOR NU30; SAE AMS 4544, 4574, 4575, 4675, 4730, 4731, 7233; DIN 17743, 17750 to 17754; ASME SB-127, SB-163 to SB-165, SB-564, Boiler Code Sections III, IV, VIII, IX; AECMA PrEN 2305; Monel nickel-copper alloy, UNS N04400; BS 3072 to 3076 (NA 13); ASTM B127, B163 to B165, B564; Werkstoff Nr. 2.4360, 2.4361; VdTÜV 263; MIL-T-1368, MIL-T-23520, MIL-N-24106; QQ-N-281; NACE MR-01-75.
Typical applications
- Marine engineering and seawater systems
- Chemical and hydrocarbon processing equipment
- Hydrofluoric acid service
- Valves, pumps, shafts and fittings
- Heat exchangers
What we make
Fasteners we make in Monel 400
Certification and testing
Certified, traceable and tested
Bar comes from approved UK, EU or US mills, with heat numbers carried through to release. Testing is by independent UKAS-accredited laboratories, with EN 10204 3.1 or 3.2 certificates as required. See quality and testing.
- Mill certificates and heat traceability
- PMI and chemical analysis
- Heat treatment by approved partners, with furnace charts
- Laser-marked heat codes or part numbers
Questions
Frequently asked questions
What is the equivalent of Monel 400?
Monel 400 is UNS N04400, BS 3076 NA13 and Werkstoff Nr. 2.4360, and is supplied to ASTM B164 and QQ-N-281 among others.
What are Monel 400 fasteners used for?
Monel 400 fasteners are used in seawater, marine, chemical and hydrocarbon service, especially with hydrofluoric acid and alkalis.
What is the difference between Monel 400 and K500?
K500 adds aluminium and titanium so it can be age hardened, giving much higher strength with similar corrosion resistance.
Can you make Monel 400 bolts for marine use?
Yes. We make Monel bolts, studs and nuts for shipbuilding and marine work, from one-offs to batches of several hundred.
Monel 400 enquiry?
Send us your drawing or specification
Tell us the sizes, quantity and documentation you need, and we will reply quickly.