Monel Tube Fittings

Monel Tube Fittings Manufacturer, Supplier & Stockist

The Monel Tube Fittings offered by Kalpaturu Piping Solution are manufactured under high-performance nickel-copper alloys which have high resistance to corrosion and mechanical stability. Among them, Monel 400 tube fittings have the quality of providing higher corrosion resistance in comparison with that of ordinary stainless steel, particularly in strenuous industrial conditions. These fittings are reliable with a large temperature range and can operate at temperatures up to 1000°F.

The Monel 400 Double Ferrule Compression Fittings are designed to give a firm and leak-proof hold on the tubing without deforming and weakening the tube walls. Although such fittings are not to be used at high temperatures in strong acidic media, they have been shown to be very resistant to neutral and alkaline salt solutions but also have limited exposure to sulphuric and hydrochloric acids.

ASTM B564 UNS N04400 Instrumentation Tube Fittings are extremely resistant to chloride-induced stress corrosion cracking, and this material is best used in marine and offshore environments as well as with seawater. Their internal pressure is always controlled because they have been precisely made and therefore will perform long-term sealing performance. DIN 2.4360 ferrule elements help in ensuring integrity of connections at varying pressure conditions.

As well, there are ASME SB 564 bulkhead unions when it comes to allowing secure connection of tanks, creating tight, leak-free seals. Kalpataru Piping Solution is also the provider of Monel K500 tube fittings that provide the corrosion resistance of Alloy 400 with the added strength, erosion resistance, and fatigue performance to address the high-stress needs.

Specifications of Monel Tube Fittings

Parameter Details
Product Standard ASTM B366 / ASME SB366
Size Range 6 mm to 38 mm
Thread Types NPT, BSP, BSPT, UNF, ISO, SAE, and other custom threads
Applicable Standards ASTM B16, ASTM B453

Monel Tube Fittings We Supply

Tube X Socket Weld Connector

Tube X Standpipe Reducer

Male Branch Tee NPT

Male Branch Tee (Variant)

Twin Ferrule Set

Male Elbow BSPP

Male Connector JIC

Female Connector BSPP

Lap Joint Connector

Tube X Flange Adapter

Bulkhead Male Connector

Male Branch Tee DIN

Monel Grade 400 Compression Elbow of Mechanical Properties

Property Value
Ultimate Tensile Strength 550 MPa
Yield Tensile Strength 240 MPa
Elongation at Break 48%

Chemical Composition of Nickel Alloy 400 Tube Fittings

Grade Other Elements (%) C % Fe % Ni % Cu % Mo % Ti % Al %
Monel 400 Mn 1.0 0.12 1.5 65.0 32.0
Monel 401 Si 0.25, Mn 2.25 0.10 0.75 43.0 53.0
Monel 404 Mn 0.10, Si 0.10, S 0.024 0.15 0.50 52.0–57.0 Balance 0.05
Monel 502 Mn 1.5, Si 0.5, S 0.010 0.10 2.0 63.0–67.0 Balance 0.50 2.5–3.5
Monel K500 Mn 0.8 0.13 1.0 64.0 30.0 0.6 2.8
Monel R-405 Mn 1.0, S 0.04 0.15 1.2 66.0 31.0

ASME SB 564 UNS N04400 Equivalent Grades Bulkhead Union 

Material Grade AFNOR UNS BS Werkstoff Nr. GOST JIS EN
Monel K500 N05500 2.4375
Monel 400 NU-30M N04400 NA 13 2.4360 МНЖМц 28-2.5-1.5 NW 4400 NiCu30Fe

Monel 400 Compression Fittings – Size Range

Fitting Type Size (Inch) Tube OD (mm)
Tube to Female Fitting 1/4″ to 1 1/2″ 6 mm to 38 mm
Tube to Pipe Fitting 1/4″ to 1 1/2″ 6 mm to 38 mm
Union 1/4″ to 1 1/2″ 6 mm to 38 mm
Male Fitting 1/4″ to 1 1/2″ 6 mm to 38 mm
Tube Fittings Accessories As per requirement As per requirement

Packaging of DIN 2.4360 Ferrule Fittings

Depending on the product type and shipment requirements, DIN 2.4360 Ferrule Fittings are packed using multiple secure packaging methods to prevent transit damage and corrosion:
  • Wooden Crates
  • Wooden Boxes
  • Shrink-Wrapped Packaging
  • Wooden Pallets
  • Heavy-Duty Carton Boxes

Alloy 400 Material Double Ferrule Fittings Pressure Rating

NPT / ISO Pipe Size (In.) Female PSIG (BAR) Male PSIG (BAR)
1/16 6,700 (461) 11,000 (757)
1/8 6,500 (447) 10,000 (689)
1/4 6,600 (454) 8,000 (551)
3/8 5,300 (365) 7,800 (537)
1/2 4,900 (337) 7,700 (530)
3/4 4,600 (316) 7,300 (502)
1 4,400 (303) 5,300 (365)
1 1/4 5,000 (344) 6,000 (413)
1 1/2 4,600 (316) 5,000 (344)
2 3,900 (268) 3,900 (268)

ASTM B564 UNS N04400 Instrumentation Fittings – Dimensions

Actual Outside Diameter (in.) Thread Designation (in.) OD (Fraction Inch) BSP Threads / Inch NPT Threads / Inch
0.03125 1/16 5/16 28 27
0.0405 1/8 13/32 28 27
0.0540 1/4 35/64 19 18
0.0675 3/8 43/64 19 18
0.0840 1/2 27/32 14 14
1.0050 3/4 1-3/64 14 14
1.0315 1 1-5/16 11 11-1/2
1.0660 1-1/4 1-21/32 11 11-1/2
1.0900 1-1/2 1-29/32 11 11-1/2
2.0375 2 2-3/8 11 8
2.0875 2-1/2 2-7/8 11 8
3.0500 3 3-1/2 11 8
4.0000 3-1/2 4 11 8
4.0500 4 4-1/2 11 8
5.0563 5 5-5/8 11 8
6.0625 6 6-5/8 11 8

Advantages of Monel Tube Fittings

  • Excellent resistance to hydrofluoric and sulphuric acids
  • Superior performance in alkaline environments
  • High malleability for precise installation
  • Outstanding corrosion resistance in harsh conditions
  • Higher strength compared to conventional steel

Applications of Monel Tube Fittings

Monel tube fittings are widely used in environments where high strength and corrosion resistance are critical:
Marine and offshore piping systems
Oil & gas instrumentation and control lines
Chemical Processing Plants
Instrumentation & Control Systems
Power Generation
Aerospace & Defense
Chemical processing and acid handling equipment
Pulp & Paper Industry
Petrochemical Industry
Seawater handling and desalination plants

People Ask About Nuts Manufacturer

Monel is used for applications requiring high corrosion resistance and strength, especially in marine, chemical processing, oil & gas, and high-temperature environments.
Yes, Monel 400 compression fittings are designed to handle high-pressure applications while providing torque-free, leak-proof sealing.
Yes, Monel 400 offers superior resistance to corrosion, particularly in marine, chemical, and saltwater environments compared to many stainless steels.
Monel 400 performs well in neutral and alkaline environments and can withstand limited exposure to certain acids at controlled temperatures.