Monel hydraulic fittings are expertly crafted components made from Monel, a nickel-copper alloy celebrated for its outstanding resistance to seawater, acids, alkalis, and other corrosive substances. These fittings are tailored for hydraulic systems that demand high strength, durability, and leak-proof performance, even in the toughest operating conditions. Thanks to Monel’s remarkable properties—like excellent corrosion resistance, impressive mechanical strength, and toughness—these fittings shine in challenging environments where stainless steel or other alloys might not hold up.
You can find them in a range of types and configurations, including adapters, couplings, elbows, tees, crosses, and unions, all designed to fit various hydraulic system layouts. Monel hydraulic fittings are built to endure high pressure and temperature fluctuations while ensuring reliable sealing performance. Their ability to resist stress-corrosion cracking and erosion guarantees a long service life, even in offshore, subsea, and chemical processing settings. Plus, the smooth internal surface of these fittings helps reduce pressure loss and promotes efficient fluid flow within hydraulic systems.
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | MONEL 400, MONEL K500 |
| WORKING PRESSURE | (LOW) LL SERIES – 100 BAR |
| (MEDIUM)L SERIES – 100 BAR TO 500 BAR | |
| (HEAVY)S SERIES – 200 BAR TO 800 BAR | |
| SIZE RANGE | LL SERIES – 4LL TO 12LL |
| L SERIES – 6L TO 42L | |
| S SERIES – 6S TO 38S | |
| CONNECTIONS | TUBE TO TUBE , TUBE TO MALE THREAD , TUBE TO FEMALE THREAD , TUBE TO BUTT WELD , TUBE TO SOCKET WELD , TUBE TO JIC 37* , TUBE TO 24* CONE, TUBE TO SWIVEL END , TUBE TO ADJUSTBALE STANDPIPE |
| WELD NIPPLE TO MALE THREAD , WELD NIPPLE TO FEMALE THREAD , WELD NIPPLE TO BUTT WELD , WELD NIPPLE TO SOCKET WELD , WELD NIPPLE TO 24* CONE , WELD NIPPLE TO 37* JIC , WELD NIPPLE TO SWIVEL | |
| BODY TYPE | FORGED, BAR STOCK |
| SURFACE | EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH |
| Designation | C% | Co% | Cr% | Mo% | Ni% | V% | W% | Ai% | Cu% | Nb/Cb Ta% | Ti% | Fe% | Sonstige Autres-Other % |
| Monel 400 | 0.12 | – | – | – | 65.0 | – | – | – | 32.0 | – | – | 1.5 | Mn 1.0 |
| Monel 401 | 0.10 | – | – | – | 43.0 | – | – | – | 53.0 | – | – | 0.75 | Si 0.25; Mn 2.25 |
| Monel 404 | 0.15 | – | 52.0-57.0 | – | – | 0.05 | rest/bal | – | – | 0.50 | Mn 0.10; Si 0.10;S o.024 | ||
| Monel 502 | 0.10 | – | – | – | 63.0-17.0 | – | – | 2.5-3.5 | rest/bal | – | 0.50 | 2.0 | Mn 1.5;Si 0.5; S 0.010 |
| Monel K 500 | 0.13 | – | – | – | 64.0 | – | – | 2.8 | 30.0 | – | 0.6 | 1.0 | Mn 0.8 |
| Monel R 405 | 0.15 | – | – | – | 66.0 | – | – | – | 31.0 | – | – | 1.2 | Mn 1.0; S 0.04 |
| Tensile strength, Ultimate | 550 Mpa |
| Tensile strength, Yield | 240 Mpa |
| Elongation at Break | 48% |
| Color/appearance | Gray [6] |
| Luster | Metallic [9] |
| Melting point | 1300 – 1350°C [1] |
| Density | 8.80X103 kg/m3 [2] |
| State of matter at room temperature (normal phase) | Solid [9] |
| Hardness | 110-150 HB [7] |
| Thermal Conductivity | 21.8 W/(m K) [1] |
| Resistivity | 54.7X10-8 ohm-m [2] |
| Tensile strength (annealed) | 550 MPa [2] |
| Specific heat capacity | 427 J/(kg*K) [2] |
| Modulus of elasticity | 179 GPa [2] |
|
STANDARD
|
WERKSTOFF NR.
|
UNS
|
JIS
|
BS
|
GOST
|
AFNOR
|
EN
|
|
Monel 400
|
2.4360
|
N04400
|
NW 4400
|
NA 13
|
МНЖМц 28-2,5-1,5
|
NU-30M
|
NiCu30Fe
|
|
Monel K500
|
2.4375
|
N05500
|
–
|
–
|
–
|
–
|
–
|
Contact us to get a quick quote for your requirement.
These fittings are widely utilized across industries like marine engineering, oil and gas exploration, petrochemical plants, chemical processing units, and power generation facilities. They excel in applications involving seawater hydraulic systems, chemical transfer lines, and offshore drilling equipment, where corrosion resistance is crucial. By merging the exceptional qualities of Monel with precision hydraulic fitting design, these components provide unmatched safety, efficiency, and longevity in critical hydraulic systems.
Please feel free to contact us if you need any further information or for enquiry.
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