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Inconel 625 Pipe

Inconel 625 Pipe is manufactured from a high-performance nickel-chromium-molybdenum alloy known for its excellent corrosion resistance, high strength, and outstanding durability. It performs reliably in environments involving chlorides, seawater, acids, high pressure, and elevated temperatures.
With excellent resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking, Inconel 625 Pipe is widely used in chemical processing, oil and gas, marine engineering, aerospace, and power generation. It is an ideal choice for demanding piping systems where long service life and dependable performance are essential.

 

 

 

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Product Overview

Inconel 625 Pipe for High-Performance Applications

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

Why buyers choose Inconel 625 Pipe

Inconel 625 Pipe is manufactured from a high-performance nickel-chromium-molybdenum alloy known for its excellent corrosion resistance, high strength, and outstanding durability. It performs reliably in environments involving chlorides, seawater, acids, high pressure, and elevated temperatures.
With excellent resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking, Inconel 625 Pipe is widely used in chemical processing, oil and gas, marine engineering, aerospace, and power generation. It is an ideal choice for demanding piping systems where long service life and dependable performance are essential.

 

 

 

Inconel 625 Pipe
Pipe Specifications

Inconel 625 Pipe 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 required grade designation and material standard. Nickel-chromium-molybdenum alloy with high corrosion resistance
Pipe Type Seamless pipe, welded pipe, tube or heat exchanger tube Select the pipe type according to pressure and service conditions. Seamless or welded construction
Outside Diameter Small diameter tube to large diameter pipe Provide OD in mm, inch or NPS where applicable. Custom OD available according to drawings or project requirements
Wall Thickness SCH 5S to XXS or custom wall thickness Wall thickness affects pressure rating, weight and service life. Schedule or custom wall thickness
Manufacturing Standard ASTM B444, ASTM B705, ASME SB444 or project specification Confirm the required ASTM, ASME or customer standard. ASTM B444 / ASTM B705 / ASME SB444
Delivery Condition Solution annealed, annealed, pickled or polished Match the condition to the application and corrosion environment. Solution annealed and pickled surface commonly supplied
Inspection & Certification MTC, PMI, UT / ET, hydrotest and dimensional inspection Confirm inspection and certification requirements before quotation. EN 10204 3.1 certificate and optional third-party inspection

 

 

 

Standards

Common standards for Inconel 625 Pipe

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

Product Type Common Standards Typical Use Inspection Notes
Inconel 625 Seamless Pipe ASTM B444 / ASME SB444, ASTM B829 / ASME SB829 High-pressure piping, offshore systems, chemical processing and seawater service Hydrostatic or pneumatic testing, UT / ET, PMI and dimensional inspection as required.
Inconel 625 Welded Pipe ASTM B705 / ASME SB705, ASTM B775 / ASME SB775 Large-diameter process piping, flue gas systems and corrosion-resistant fabricated pipework Weld visual inspection, radiographic or ultrasonic testing, pressure testing and MTC review.
Inconel 625 Pipe Fittings ASTM B366 / ASME SB366 Elbows, tees, reducers, caps and custom fittings for corrosive and high-temperature service PMI, heat traceability, dimensional inspection and NDT according to project requirements.
Inconel 625 Forged Flanges ASTM B564 / ASME SB564 Pipe flanges, forged rings and pressure-containing connection components Verify pressure class, flange facing, machining tolerances, PMI, NDT and material certificates.
Inconel 625 Clad or Lined Pipe ASTM B444 / ASTM B705, API 5LD or project specifications Oil and gas pipelines, subsea flowlines and aggressive sour or seawater environments Inspect cladding thickness, bond integrity, weld overlay, corrosion resistance and base-pipe traceability.

 

 

 

Chemical Composition

Inconel 625 Pipe composition reference

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

Element Symbol Inconel 625 Pipe Composition (%) Function
Nickel Ni 58.0 min Provides excellent corrosion resistance, toughness, and high-temperature stability.
Chromium Cr 20.0-23.0 Improves oxidation resistance and performance in oxidizing environments.
Molybdenum Mo 8.0-10.0 Enhances resistance to pitting, crevice corrosion, and reducing acids.
Niobium + Tantalum Nb + Ta 3.15-4.15 Provides solid-solution strengthening without heat treatment.
Iron Fe 5.0 max Controlled balance element in the nickel-based alloy.
Cobalt Co 1.0 max Controlled to maintain alloy consistency and performance.
Carbon C 0.10 max Limited to support weldability and corrosion resistance.
Manganese Mn 0.50 max Acts as a deoxidizer during alloy production.
Silicon Si 0.50 max Controlled to maintain weldability and mechanical properties.
Aluminum Al 0.40 max Supports oxidation resistance and alloy stability.
Titanium Ti 0.40 max Contributes to alloy stabilization and strength.
Phosphorus P 0.015 max Controlled impurity to preserve ductility and weldability.
Sulfur S 0.015 max Controlled impurity to reduce hot cracking risk.

 

 

 

Mechanical Properties

Mechanical Properties of Inconel 625 Pipe

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 pipe / tube 827 MPa min reference 414 MPa min reference 30% min reference Common selection reference for Inconel 625 pipe.
Solution annealed Inconel 625 pipe / tube Lower strength, higher ductility route by specification By standard and size By standard and size Suitable when corrosion resistance and fabrication requirements dominate.
Welded Inconel 625 pipe By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification Specify weld quality, heat treatment, 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 Pipe

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

Inconel 625 Pipe is used for seawater piping, offshore systems, chemical processing lines, heat exchangers, sour service equipment, scrubbers and corrosion-resistant piping systems.

Common standards include ASTM B444 and ASME SB444 for seamless pipe and ASTM B705 and ASME SB705 for welded pipe.

Yes. Inconel 625 is available as seamless pipe, welded pipe, tube and heat exchanger tube according to project requirements.

Yes. We can provide an EN10204 3.1 material certificate, heat number traceability, PMI, chemical analysis and mechanical test results.

Please provide the grade, pipe type, outside diameter, wall thickness or schedule, length, quantity, standard, certificate requirements and destination.

Yes. Inconel 625 offers excellent resistance to seawater, chloride-bearing environments, pitting, crevice corrosion and stress corrosion cracking.

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