Monel Fittings Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies Monel Fittings from ready stock in Mumbai to customers across India and in more than 40 export markets. Fittings carry the same corrosion duty as the pipe they join but see higher stress concentration at every change of direction, so grade traceability and wall thickness at the extrados matter more here than anywhere else in a piping system.
Monel covers nickel-copper alloys with outstanding resistance to seawater, hydrofluoric acid and flowing brackish water. Fittings are supplied with heat-number traceability and can be bevelled, tacked or pre-fabricated into spools on request.
Sizes and Specifications
| Size range | Butt-weld fittings 1/2" to 48" NB in Sch 5S to Sch XXS; forged socket-weld and threaded fittings 1/8" to 4" NB in 3000#, 6000# and 9000# classes. |
|---|---|
| Types and finishes | Elbows (45° and 90°, long and short radius), tees (equal and reducing), reducers (concentric and eccentric), caps, stub ends, couplings, unions, plugs and bushings. |
| Specifications | ASME B16.9 and B16.28 for butt-weld, ASME B16.11 for forged fittings, with material to ASTM B366 for Monel 400. |
| Certification | EN 10204 3.1 mill test certificate; 3.2 and third-party inspection on request |
| Origin | Indian and imported mills, fully traceable by heat number |
Specifications by Grade – Fittings
A specification is written for a product form. The standards below are the ones that cover fittings; the plate, bar and tube specifications for these grades are different documents and are listed on their own pages.
| Grade | UNS | Fittings specification |
|---|---|---|
| 400 | N04400 | ASTM B366 |
Grades and International Equivalents
| Grade | UNS | Werkstoff (W.Nr.) |
|---|---|---|
| Monel 400 | N04400 | 2.4360 |
| Monel K-500 | N05500 | 2.4375 |
| Monel 401 | N04401 | 2.4370 |
Chemical Composition
Monel 400 is nominally 63% minimum nickel with 28-34% copper and up to 2.5% iron. Monel K-500 adds 2.3-3.15% aluminium and 0.35-0.85% titanium so it can be precipitation hardened.
Mechanical and Physical Properties
Monel 400 delivers about 550 MPa tensile strength annealed; K-500 reaches 1100 MPa in the aged condition while keeping the same corrosion behaviour. Both stay ductile down to cryogenic temperatures.
Industry Applications
How fittings is used
Fittings are factory-made wrought components to ASTM B366, dimensioned to ASME B16.9 for butt-weld and ASME B16.11 for socket-weld. They are the 45, 90 and 180 degree elbows, tees, reducers, caps and lap-joint stub ends that change direction, branch or change bore in a process line, and they are specified to match the pipe they join in both alloy and schedule so the weld and the corrosion behaviour stay continuous.
| Industry | Typical use |
|---|---|
| Marine | Seawater piping, pump shafts, propeller sleeves and heat exchangers. |
| Oil and gas | Hydrofluoric acid alkylation units, valve trim and downhole hardware. |
| Chemical processing | HF acid service, caustic evaporators and brine handling. |
| Defence | Naval fittings, fasteners and submarine components. |
| Power generation | Feedwater heaters and condenser tubing. |
Testing and Certification
Every consignment ships with an EN 10204 3.1 mill test certificate stating heat number, chemical analysis and mechanical properties. Depending on grade and specification we can supply positive material identification (PMI), ultrasonic and dye-penetrant testing, intergranular corrosion testing to ASTM A262 or G28, hydrostatic testing, and third-party inspection release notes from Lloyd's Register, Bureau Veritas, SGS or TUV.
Aurico Alloys LLP operates an ISO 9001:2015 quality management system. Material for sour service can be supplied certified to NACE MR0175 / ISO 15156 where the grade permits.
Frequently Asked Questions
Request a Quotation
Send your grade, size, quantity and specification and we will respond with price and lead time, usually the same working day. Call +91 7977 88 6611 or email info@auricoalloys.com.