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Inconel 625 Fittings

Inconel 625 Fittings are manufactured from a high-performance nickel-chromium-molybdenum alloy that provides excellent corrosion resistance, high mechanical strength, and reliable performance under extreme conditions. They maintain their integrity when exposed to seawater, chlorides, acids, high pressure, and elevated temperatures.
With outstanding resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking, Inconel 625 elbows, tees, reducers, couplings, and other fittings are widely used in chemical processing, oil and gas, marine engineering, aerospace, and power generation. Their durability and long service life make them an ideal choice for critical piping systems.

 

 

 

 

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Product Overview

Inconel 625 Fittings for High-Performance Applications

Explore detailed information for this alloy product, including specifications, applications, supply options and quotation requirements.

Why buyers choose Inconel 625 Fittings

Inconel 625 Fittings are manufactured from a high-performance nickel-chromium-molybdenum alloy that provides excellent corrosion resistance, high mechanical strength, and reliable performance under extreme conditions. They maintain their integrity when exposed to seawater, chlorides, acids, high pressure, and elevated temperatures.
With outstanding resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking, Inconel 625 elbows, tees, reducers, couplings, and other fittings are widely used in chemical processing, oil and gas, marine engineering, aerospace, and power generation. Their durability and long service life make them an ideal choice for critical piping systems.

 

 

 

 

Inconel 625 Fittings
Pipe Specifications

Inconel 625 Fittings size range and supply information

Specifications, available sizes and delivery conditions can vary by production route and order requirements. Contact us for current availability.

Item Typical Options Buyer Notes Typical Specification
Material Grade Inconel 625 / UNS N06625 / W.Nr. 2.4856 Confirm the alloy designation, chemical composition and certification requirements. Nickel-chromium-molybdenum alloy for severe corrosive and high-temperature service
Fitting Type Elbow, tee, reducer, cross, cap, stub end or bend Specify the fitting type, connection layout and required flow direction. Butt-weld, socket-weld or threaded fittings
Size DN15 to DN600, NPS 1/2 to NPS 24 or custom dimensions Provide nominal size, outside diameter and connection dimensions. Standard and custom sizes available according to project drawings
Wall Thickness SCH 5S to XXS, equal thickness or custom wall thickness Match wall thickness to the connected pipe and design pressure. Schedule and custom thickness options available
Fitting Rating Class 150, 300, 600, 900, 1500 or 2500 Confirm pressure class, temperature rating and applicable piping code. ASME B16.5 or ASME B16.9 pressure-rated configurations
Applicable Standard ASTM B366, ASME SB366, ASME B16.9, ASME B16.28 or project specification Confirm the required material, dimensional and manufacturing standards. ASTM / ASME compliant fittings supplied with full traceability
Surface & End Preparation Pickled, bright annealed, polished, beveled or machined ends End preparation should match the welding method and installation requirements. Clean surface with precise bevel and dimensional control
Inspection & Certification MTC, PMI, dimensional inspection, radiographic testing, UT and third-party inspection Confirm inspection scope, NDE requirements and documentation before quotation. EN 10204 3.1 certificate and inspection dossier available

 

 

 

Standards

Common standards for Inconel 625 Fittings

The final standard should follow the purchase order, engineering specification or project drawing.

Product Type Common Standards Typical Use Inspection Notes
Inconel 625 Butt Weld Fittings ASTM B366 / ASME SB366, ASME B16.9 Corrosion-resistant process piping, offshore systems and high-temperature service Verify dimensions, wall thickness, bevel preparation, PMI and heat traceability.
Inconel 625 Elbows ASTM B366 / ASME SB366, ASME B16.9 Changing flow direction in chemical, marine, power-generation and subsea piping Inspect bend angle, center-to-end dimensions, ovality, surface condition and material certificates.
Inconel 625 Tees ASTM B366 / ASME SB366, ASME B16.9 Branch connections in pressure piping and aggressive fluid-handling systems Check outlet alignment, wall thickness, dimensions, PMI and NDT requirements.
Inconel 625 Reducers ASTM B366 / ASME SB366, ASME B16.9 Connecting different pipe sizes in corrosive and high-pressure piping systems Verify concentricity or eccentricity, end dimensions, wall thickness and surface quality.
Inconel 625 Caps ASTM B366 / ASME SB366, ASME B16.9 Closing pipe ends in offshore, chemical-processing and pollution-control systems Inspect overall dimensions, end preparation, wall thickness, PMI and forming condition.
Inconel 625 Socket Weld & Threaded Fittings ASTM B366 / ASME SB366, ASME B16.11 Small-bore high-pressure piping, instrumentation and utility connections Confirm pressure class, socket dimensions, thread accuracy, NPT gauge results and traceability.

 

 

 

 

Chemical Composition

Inconel 625 Fittings composition reference

Chemical composition is reported by heat on the material test certificate. Use the table below as a material-selection reference.

Element Symbol Typical Requirement Function
Nickel Ni 58.0 min Base element providing corrosion resistance, toughness, and thermal stability.
Chromium Cr 20.0-23.0 Provides oxidation resistance and protection in oxidizing environments.
Molybdenum Mo 8.0-10.0 Improves resistance to pitting, crevice corrosion, and reducing acids.
Niobium + Tantalum Nb + Ta 3.15-4.15 Provides solid-solution strengthening for dependable fitting performance.
Iron Fe 5.0 max Controlled balancing element in the nickel-based alloy.
Cobalt Co 1.0 max Controlled to maintain consistent mechanical and corrosion properties.
Carbon C 0.10 max Limited to support weldability, forming performance, and corrosion resistance.
Manganese Mn 0.50 max Acts as a deoxidizer during alloy production.
Silicon Si 0.50 max Controlled to maintain strength, ductility, and fabrication quality.
Aluminum Al 0.40 max Supports oxidation resistance and alloy stability.
Titanium Ti 0.40 max Contributes to alloy stabilization and mechanical strength.
Phosphorus P 0.015 max Controlled impurity to preserve ductility and joint reliability.
Sulfur S 0.015 max Controlled impurity to reduce brittleness and cracking risk.

 

 

 

 

Mechanical Properties

Mechanical Properties of Inconel 625 Fittings

Mechanical properties vary by standard, pipe size, production route and heat treatment. Use the specified standard and MTC as the final acceptance basis.

Condition / Product Tensile Strength Yield Strength 0.2% Elongation Notes
Annealed seamless Inconel 625 fittings 827 MPa min reference 414 MPa min reference 30% min reference Common reference condition for elbows, tees, reducers, and caps.
Solution annealed Inconel 625 fittings By applicable ASTM / ASME specification By applicable ASTM / ASME specification By applicable ASTM / ASME specification Selected when corrosion resistance, forming, and fabrication requirements dominate.
Welded Inconel 625 fittings By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification Specify weld procedure, weld quality, heat treatment, and inspection requirements.
Custom Inconel 625 fittings By design and purchase specification By design and purchase specification By design and purchase specification Confirm dimensions, pressure rating, material traceability, and testing requirements.

 

 

 

 

Values shown are reference data for product selection. Purchase orders should define the exact standard, condition, inspection scope and certificate requirement.

Quotation Checklist

Information to confirm for your order

Share your requirements, including material, size, quantity, and specifications, for a fast quotation.

Material

Grade name, UNS number, equivalent grade or project material code.

Pipe Size

OD / NPS, wall thickness or schedule, length, tolerance and quantity.

Standard

ASTM, ASME, EN, DIN, drawing or customer specification.

Condition

Seamless, welded, annealed, solution annealed, pickled or polished.

Inspection

MTC EN10204 3.1, PMI, UT / ET, hydrotest and dimensional report.

Delivery

Destination, packing requirement, shipping method and delivery deadline.

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FAQ

Frequently asked questions about Inconel 625 Fittings

FAQ content helps cover buyer questions and supports SEO for long-tail product searches.

Inconel 625 Fittings are used in offshore, marine, chemical processing, oil and gas, power generation and high-temperature piping systems requiring excellent corrosion resistance and mechanical strength.

Available products include elbows, tees, reducers, caps, crosses, couplings, unions, outlets, stub ends and custom fittings manufactured according to drawings or project specifications.

Butt-weld fittings are commonly supplied to ASTM B366 and ASME SB366, with dimensions according to ASME B16.9. Socket-weld and threaded fittings can be supplied according to ASME B16.11.

Yes. Inconel 625 Fittings can be supplied with an EN10204 3.1 material certificate, heat number traceability, chemical analysis, mechanical test results, PMI and dimensional inspection reports.

Yes. Custom Inconel 625 Fittings can be manufactured according to customer drawings, including special dimensions, wall thicknesses, end connections, tolerances and inspection requirements.

Please provide the fitting type, size, wall thickness or schedule, connection type, quantity, dimensional standard, material standard, certificate requirements and destination.

Request Inconel 625 Fittings Quote

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For faster feedback, include OD / NPS, wall thickness or schedule, length, quantity, standard, certificate requirement and destination. If you have a drawing or project specification, send it with the inquiry.

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