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Inconel 625 round bar
solid round sections for machined components, shafts, fasteners and marine parts
Request Availability →Inconel 625 Bar and Rod for Corrosion & High Heat
UNS N06625 nickel-chromium-molybdenum bar and rod for marine, aerospace, chemical processing, oil and gas and other corrosion-critical service.
Certified Inconel 625 grades
mill-direct UNS N06625 material with heat-number traceability and EN 10204 3.1 mill test reports
Custom bar and rod
manufactured to your diameters, condition, tolerances, and surface finish
Fast global delivery
responsive lead times with complete export documentation on every shipment
PRODUCT OVERVIEW
About Inconel 625 Bar and Rod
Inconel 625 bar and rod is a solid-solution-strengthened nickel-chromium-molybdenum alloy that carries very high strength in seawater, hot acids, and high-temperature gas paths. Strengthened by molybdenum and niobium rather than heat treatment, UNS N06625 resists pitting, crevice corrosion, and chloride stress-corrosion cracking while retaining useful mechanical properties up to about 980 °C. Supplied as round, bright, cold-drawn, square, hex, and forged bar, Inconel 625 bar serves marine, aerospace, chemical processing, oil and gas, and power-generation components. Southerly Alloy manufactures Inconel 625 bar and rod to ASTM B446 with full traceability and mill certificates.
PRODUCT FEATURES
Key Features of Inconel 625 Bar and Rod
Inconel 625 bar and rod is a nickel-chromium-molybdenum-niobium alloy strengthened by solid-solution hardening, combining very high strength with outstanding resistance to pitting, crevice corrosion, and chloride stress-corrosion cracking. [Inconel 625](https://www.southerly-alloy.com/alloy625/) (UNS N06625) bar is commonly supplied to ASTM B446 / ASME SB446 in round, square, hex, flat, and forged sections for marine, aerospace, chemical processing, oil and gas and power generation.
Inconel 625
Outstanding pitting resistance
resists localized attack in seawater, chlorides, and oxidizing acidic media
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High strength without aging
solid-solution hardening delivers strength with no precipitation heat treatment required
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Wide service temperature range
dependable mechanical properties from cryogenic conditions up to approximately 980 °C
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Excellent weldability
welded without preheat and generally used without post-weld heat treatment
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Fatigue and thermal-fatigue resistance
suited to cyclic loading and repeated thermal cycling in service
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Good machinability in the annealed condition
consistent cutting behavior for turned and precision-machined components
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Full material traceability
heat numbers and EN 10204 3.1 documentation accompany every bar delivery
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WHY CHOOSE US
Why Choose Inconel 625
When you source Inconel 625 bar and rod, Southerly Alloy is the direct provider behind your order. Buying from us means mill-direct UNS N06625 material with heat-number traceability, ISO 9001-controlled quality systems, and one accountable partner from specification review to export shipment — with bar processed and inspected to the ASTM B446 condition you specify.
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Direct factory supply
Inconel 625 bar and rod produced in our own mill, with stable lead times and no third-party markups
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Certified quality systems
ISO 9001-controlled production with EN 10204 3.1 inspection certificates on every heat
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Custom manufacturing
diameters, cut lengths, straightness, finish, and packing produced to your drawing and order quantity
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Reliable export service
experienced logistics and complete documentation for on-schedule global delivery
MANUFACTURING PROCESS
Reliable Production For Critical Applications
From vacuum melting to final inspection, every Inconel 625 bar is processed on dedicated production lines with in-house testing at each stage, so the material you receive matches the ordered ASTM B446 condition with full documentation and heat-number traceability.
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Raw material preparation
Nickel, chromium, molybdenum, and niobium charges are selected and weighed to meet the required UNS N06625 chemistry with controlled residuals.
02
Vacuum Induction Melting (VIM)
The charge is melted under vacuum to minimize gas pickup and maintain tight control of composition.
03
Electroslag Remelting (ESR)
Where specified, ESR refines the electrode to reduce inclusions and improve ingot uniformity for critical service.
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Hot forging and rolling
The ingot is converted to billet, then forged or hot rolled to the required bar and rod section with controlled working.
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Solution annealing
Annealing develops the specified balance of strength, ductility, and corrosion resistance for the ordered condition.
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Cold working and finishing
Cold drawing, peeling, straightening or centerless grinding provides tighter dimensions and the required surface finish.
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Final inspection
Chemical composition, mechanical properties, dimensions, and surface are verified before the material is released.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Southerly Alloy manufactures Inconel 625 bar and rod across the common forms and conditions called for in ASTM B446 — hot-worked, cold-worked, and annealed material in round, square, hex, flat, and forged sections. Diameter, cut length, straightness, tolerance, condition, and surface finish are confirmed against your purchase requirements before production. For precision machining applications, cold-drawn, peeled, or centerless-ground bar provides a controlled starting surface and dimensional condition.
20,000+ m²
Factory Area
modern production facilities and dedicated workshops
50+
Production Machines
advanced equipment supporting precision alloy manufacturing
600 tons
Monthly Capacity
nickel alloy bar and rod output across standard and custom sizes
30+
Technical Engineers
experienced engineers providing specification and application support
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Every Inconel 625 bar and rod batch is inspected against the agreed specification before release — chemical composition, mechanical properties, dimensions, and surface — under our ISO 9001 quality management system. EN 10204 3.1 documentation is supplied when required, with third-party inspection available on request.
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Chemical analysis
composition verified by spectrometer against the required UNS N06625 limits
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Mechanical testing
tensile, yield, elongation and hardness confirmed on the ordered condition
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Dimensional and NDT checks
size, straightness, and surface examined, with UT / PMI on request
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Documentation
EN 10204 3.1 mill test certificate with heat-number traceability on every delivery
PRODUCT FORMS
Available Product Forms
Inconel 625 bar and rod are supplied in round, square, hex, flat, and forged sections in hot-worked, cold-worked and annealed conditions to ASTM B446.
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Inconel 625 rod
smaller-diameter round stock with controlled straightness for precision machining
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Inconel 625 bright bar
bright-finished bar for applications requiring improved surface and dimensional control
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Inconel 625 cold-drawn bar
cold-worked bar with tighter tolerances and higher strength than annealed material
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Inconel 625 forged bar
larger or shaped sections with a refined wrought structure for demanding service
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Inconel 625 square bar
square sections for structural supports, fixtures, and machined components
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Inconel 625 hex bar
hexagonal bar for precision machining and multi-flat fastener blanks
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Inconel 625 flat bar
flat sections where width and thickness are specified for fabrication
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Precision-ground rod
centerless-ground Inconel 625 rod for tight diameter and straightness tolerances
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APPLICATIONS
Engineered For Demanding Industries
Inconel 625 bar and rod are specified wherever components face seawater, aggressive chemical media or high-temperature oxidation together with mechanical loading. Typical industries include marine engineering, aerospace, chemical processing, oil and gas, nuclear and power generation.
Discuss Your Application →
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Marine and seawater components
propeller shafts, pump shafts and fasteners exposed to chloride pitting and crevice attack
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Aerospace ducting and exhausts
engine ducting, thrust-reverser systems and exhaust components in high-temperature service
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Chemical processing equipment
reactor internals and valve components in oxidizing acids and chloride media
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Oil and gas equipment
downhole and subsea components where strength and corrosion resistance are required together
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Heat-treatment equipment
furnace fixtures and muffles needing oxidation resistance at elevated temperatures
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Pollution-control systems
flue-gas desulfurization components in wet, chloride-laden environments
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Power generation
turbine shroud rings and boiler-related components under heat and corrosive exposure
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Fasteners and fittings
high-strength Inconel 625 bar machined into bolts, studs, and custom fittings
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The following composition limits are based on published ASTM B446-related data for UNS N06625. The governing purchase specification always takes precedence for final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0–23.0% |
| Molybdenum (Mo) | 8.0–10.0% |
| Niobium + Tantalum (Nb + Ta) | 3.15–4.15% |
| Iron (Fe) | 5.00% max. |
| Cobalt (Co) | 1.00% max. |
| Carbon (C) | 0.10% max. |
| Manganese (Mn) | 0.50% max. |
| Silicon (Si) | 0.50% max. |
| Phosphorus (P) | 0.015% max. |
| Sulfur (S) | 0.015% max. |
| Aluminum (Al) | 0.40% max. |
| Titanium (Ti) | 0.40% max. |
Mechanical Properties
ASTM B446 furnishes UNS N06625 rod and bar in two heat-treated grades. Grade 1 (annealed) is normally employed in service up to about 593 °C and carries higher minimum room-temperature strength; Grade 2 (solution annealed) is normally employed above about 593 °C where resistance to creep and rupture is required. Minimum room-temperature properties are listed below — Grade 1 requirements vary with product size.
| Grade / Condition | Product Size | Tensile Strength | Yield Strength, 0.2% Offset | Elongation |
|---|---|---|---|---|
| Grade 1 — Annealed (≥871 °C / 1600 °F) | Up to 101.6 mm (4 in.) dia. | ≥827 MPa | ≥414 MPa | ≥30% |
| Grade 1 — Annealed (≥871 °C / 1600 °F) | Over 101.6 to 254 mm (4–10 in.) dia. | ≥758 MPa | ≥345 MPa | ≥25% |
| Grade 2 — Solution annealed (≥1093 °C / 2000 °F) | All sizes | ≥690 MPa | ≥276 MPa | ≥30% |
- Grade 1 is annealed at 871 °C (1600 °F) minimum. Grade 2 is solution annealed at 1093 °C (2000 °F) minimum, with or without a subsequent stabilization anneal at 982 °C (1800 °F) minimum to increase resistance to sensitization. The applicable ASTM B446 grade, size and condition govern final acceptance.
Physical Properties
| Property | Value |
|---|---|
| Alloy | Inconel 625 |
| UNS | N06625 |
| Werkstoff | 2.4856 |
| Density | Approx. 8.44 g/cm³ |
| Melting Range | Approx. 1290–1350°C |
| Alloy Type | Nickel-chromium-molybdenum |
| Strengthening | Solid-solution (Mo, Nb) |
Standards
| Standard | Product / Application |
|---|---|
| ASTM B446 | Nickel-chromium-molybdenum-niobium alloy bar and rod |
| ASME SB446 | ASME specification for bar and rod |
| ASTM B443 | Related UNS N06625 plate, sheet and strip specification |
| ASTM B444 | Related UNS N06625 seamless pipe and tube specification |
| SAE AMS 5666 | Nickel alloy 625 bar, forgings and rings (annealed) |
| DIN 17752 / 2.4856 | Nickel alloy bar — European designation and standard |
| ISO 9723 / 9724 | Nickel and nickel alloy bar and rod |
| BS 3076 NA21 | Nickel alloy bar |
| VdTÜV 499 | Pressure equipment approval (Europe) |
ASTM B446 is the principal specification for Inconel 625 bar and rod. SAE AMS 5666 is widely associated with Inconel 625 bar for aerospace-related procurement, and ASME SB446 is specified where pressure-equipment code compliance is required.
Dimensions
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–500 mm dia. | Single Random, Double Random or Custom |
| Round Rod | 3–50 mm dia. | Single Random, Double Random or Custom |
| Bright Bar | 6–150 mm dia. | Single Random, Double Random or Custom |
| Square Bar | 10–150 mm | Single Random, Double Random or Custom |
| Hex Bar | 10–150 mm A/F | Single Random, Double Random or Custom |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Single Random, Double Random or Custom |
| Forged Bar | 100–500 mm dia. or custom forged section | Custom |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Custom |
Available dimensions depend on the manufacturing route, standard, material condition, and order quantity. Please confirm your required diameter, section, and length in the inquiry.
Surface Finishes
| Surface Condition | Typical Characteristics / Applications |
|---|---|
| Hot Finished | Supplied in the as-hot-worked condition; suitable for general industrial applications and subsequent machining |
| Cold Drawn | Improved dimensional accuracy and surface finish, with increased strength from cold working |
| Bright Finished | Smooth, bright surface with improved dimensional control; suitable for applications requiring a cleaner surface appearance |
| Peeled | Machined surface with controlled diameter and improved surface uniformity, typically supplied for further machining or finishing |
| Centerless Ground | Precision-ground surface with close dimensional tolerances and consistent diameter |
| Polished | Fine surface finish for applications requiring reduced surface roughness and improved appearance |
| Rough Turned | Machined surface used for large-diameter or forged bars, providing controlled dimensions with machining allowance for further processing |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
From first inquiry to delivered material, a transparent process keeps you informed at every stage — most Inconel 625 bar orders move from inquiry to shipment in under three weeks.
1
Send your inquiry
provide Inconel 625 grade, product form, diameter, length, quantity and required standard
2
Confirm the specification
state ASTM B446, ASME SB446 or AMS 5666 together with material condition and finish
3
Review the quotation
receive pricing based on dimensions, quantity, manufacturing route, inspection and destination
4
Confirm the order
approve the technical specification, commercial terms, documentation and production schedule
5
Production and inspection
your Inconel 625 bar and rod is manufactured and inspected to the agreed specification
6
Shipment and documentation
receive the material with EN 10204 3.1 MTC, heat-number traceability and export documentation
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The Inconel 625 bar for our offshore fastener program matched the ASTM B446 specification exactly, with mill certificates that cleared incoming inspection without delay.”
★★★★★
“We ordered UNS N06625 cold-drawn bar for a chemical plant upgrade; the surface quality and dimensional tolerance were consistent across the full order.”
★★★★★
“Technical clarification before production confirmed the correct annealed condition and straightness for our aerospace machining cell — smooth from quotation to delivery.”
CERTIFICATIONS
Qualified Quality System
Your Inconel 625 bar and rod can be supplied with documentation appropriate to the agreed specification and application, including material certificates, chemical analysis, mechanical test reports, dimensional inspection records and full heat-number traceability. EN 10204 3.1 inspection documentation, third-party inspection, PMI and additional project-specific testing can be arranged through the purchase order.
ISO 9001:2015
Quality Management System covering production and inspection
ASTM B446 / ASME SB446
Material standards compliance for bar and rod
SAE AMS 5666
Aerospace bar and rod specification support
EN 10204 3.1
Mill test certificates on every delivery
FAQ
Frequently Asked Questions
Which ASTM specification applies to Inconel 625 bar and rod?
Inconel 625 bar and rod is commonly supplied to ASTM B446, with ASME SB446 for pressure applications and SAE AMS 5666 for aerospace procurement.
How is the price of Inconel 625 bar calculated?
Price is quoted per kg based on diameter, length, quantity, and the prevailing nickel surcharge; every quotation states the Incoterm clearly.
Can Inconel 625 bar be welded?
Yes. Inconel 625 is welded without preheat and is generally used without post-weld heat treatment, which simplifies fabrication of bar components and assemblies.
Is Inconel 625 bar hard to machine?
Inconel 625 is machinable in the annealed condition with carbide tooling and rigid setups; the alloy work-hardens, so consistent feed and depth of cut give the best results.
Can Inconel 625 bar resist rusting and seawater attack?
Inconel 625 resists pitting, crevice corrosion, and chloride stress-corrosion cracking, which is why UNS N06625 bar is specified for marine and chloride-laden service.
What applications use Inconel 625 bar?
Typical applications include marine shafts and fasteners, aerospace ducting, chemical reactor components, oil and gas equipment, and pollution-control systems.
What is your MOQ for Inconel 625 bar?
Single-piece orders are available for common sizes.
What are your trade terms for Inconel 625 bar?
We mainly quote on FOB terms; EXW and CIF are also available depending on destination and order value.
What is the lead time for Inconel 625 bar?
Stock sizes ship in 7-15 days. Custom diameters and special finishes are a little longer.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. Every delivery includes EN 10204 3.1 mill test certificates, and 3.2 certificates with third-party-endorsed inspection can be arranged on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send us your requirements including material grade, dimensions, quantity and standards.
