01
Inconel 601 Round Bar
Solid sections from 6 to 500 mm for radiant tubes, muffles and furnace structures.
Request Availability →Inconel 601 Bar and Rod
Nickel-chromium-aluminium bar and rod for furnace fixtures, radiant tubes and high-temperature process equipment.
Duty Temperature Fixed at Quotation
Your peak temperature and furnace atmosphere are recorded before production, so the annealing condition matches the duty.
Scale-Forming Chemistry on the MTC
Chromium and aluminium are reported per heat on the EN 10204 3.1 certificate, so oxidation performance can be checked, not assumed.
AMS 5715 Scope Checked First
AMS 5715 covers a defined range of forms and sizes, so we confirm your order falls within it before quoting to that standard.
PRODUCT OVERVIEW
About Inconel 601 Bar and Rod
Inconel 601 (UNS N06601, W.Nr. 2.4851) holds a protective oxide scale where ordinary heat-resistant steels flake away. The aluminium addition is what separates it from Alloy 600 in furnace atmospheres. Southerly Alloy supplies round bar, rod and forged sections to ASTM B166 and ASME SB166 in annealed, hot-finished and cold-drawn conditions. Radiant tubes, carburizing baskets and burner hardware are the usual destinations for this bar.
PRODUCT FEATURES
Key Features of Inconel 601 Bar and Rod
Inconel 601 is a nickel-chromium alloy with an aluminium addition that forms a tightly adherent oxide scale, giving far better high-temperature oxidation and carburization resistance than Alloy 600. Southerly Alloy supplies UNS N06601 bar and rod to ASTM B166 in annealed, hot-finished, and cold-drawn conditions, with cut lengths, surface finishes, and mill test documentation. Furnace builders, heat-treatment shops and petrochemical plants are typical buyers of this bar.
Inconel 601
Oxidation Resistance to 1250 °C
Forms a tightly adherent oxide scale that survives continuous service in clean and mildly contaminated air.
01
Alumina Sub-Scale Formation
Aluminium builds an Al₂O₃ layer under the chromia scale, slowing oxidation at peak temperature.
02
Thermal Cycling Stability
The scale resists spalling through repeated heating and cooling, which extends fixture service life.
03
Carburization Resistance
Holds up in carburizing and carbonitriding atmospheres where leaner nickel grades absorb carbon.
04
Nitriding Atmosphere Resistance
Resists nitrogen pickup in nitriding furnaces that embrittle standard stainless fixture steel.
05
Sulphur-Bearing Gas Resistance
High chromium with aluminium handles oxidizing sulphur atmospheres at elevated temperatures.
06
Strength Retained at Temperature
Useful short-time strength continues to roughly 1000 °C, above the austenitic stainless range.
07
Welding and Fabrication
Bar welds with matching filler metal and forms cleanly, so fixtures can be repaired between campaigns.
08
WHY CHOOSE US
Why Choose Inconel 601
Your Inconel 601 enquiry reaches the team that melts, anneals, and finishes nickel alloy bar on one site. We match the annealing condition to your furnace duty before cutting. One contact owns your order from quotation to shipment.
01
Furnace Duty Understood
Your furnace type, atmosphere, and cycle rate are reviewed before a grade and condition are proposed.
02
Heat Traceability Held
Heat numbers, EN 10204 3.1 certificates and PMI records are compiled for each delivery.
03
Small or Bulk Runs
A single fixture bar and a full container order travel the same qualified production route.
04
Quotes That Commit
Quotations state condition, size, and documentation, rather than vague availability promises.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Inconel 601 bar and rod are melted from nickel, chromium and iron, with aluminium held inside the 1.0–1.7% window. Each heat is worked, solution-annealed, and finished to the ordered condition, with results recorded against the heat number.
01
Charge Selection
Nickel, chromium and iron are weighed to the UNS N06601 window, with aluminium added to target.
02
Melting and Refining
The charge is melted and refined through AOD or VOD to control carbon, sulphur, and gas content.
03
Electroslag Remelting
Where cleanliness or uniformity demands it, ESR refines the ingot and reduces segregation.
04
Casting
Refined metal is cast into ingots under solidification controls that limit section segregation.
05
Hot Working
Ingots are forged and rolled to bar section, breaking down the cast structure as size reduces.
06
Solution Annealing
Bars are annealed between 1100 and 1200 °C and cooled rapidly to set the oxide-forming structure.
07
Cold Finishing
Drawing, peeling or centreless grinding brings the bar to the final diameter, tolerance and surface.
08
Inspection and Release
Chemistry, mechanical properties, dimensions and surface are verified against the purchase specification.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Inconel 601 bar is produced in stock and made-to-order diameters, with condition, finish and cut length agreed before production. The figures below cover the melting, annealing, and inspection capacity behind that commitment. Mixed-condition orders run as one campaign.
20,000+ m²
Factory Area
melting, forging, annealing and inspection halls on one site.
50+
Production Machines
units covering hot working, solution annealing, and cold finishing.
600 Tons
Monthly Capacity
nickel alloy bar output across stock and made-to-order sizes.
30+
Technical Engineers
metallurgists who match the annealing condition to your furnace duty.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Inconel 601 bar is released only after the ordered ASTM B166 requirements are demonstrated on the heat. Composition is checked by spectrometer, and tensile, hardness, and dimensional tests are run on the delivered condition. Records stay with the material for incoming checks.
01
Spectrometer Chemistry
Nickel, chromium and aluminium are measured per heat and checked against the N06601 window.
02
Dimensional Verification
Diameter, straightness and cut length are measured to the applicable B166 tolerance class.
03
Mechanical Testing
Tensile and hardness tests run on the ordered condition, with UT or PMI where specified.
04
Certificate Traceability
EN 10204 3.1 documents tie every bar back to its heat number.
PRODUCT FORMS
Available Product Forms
Round bar and rod carry most Alloy 601 enquiries, with hex, square, flat and forged sections covering fixture and machining work. Each form below is quoted separately, with its own condition and tolerance route.
02
Inconel 601 Round Rod
Smaller diameters with controlled straightness for thermocouple sheaths and machined parts.
Request Availability →
03
Inconel 601 Bright Bar
Cold-drawn bright surface for automatic lathes and parts that stay visible.
Request Availability →
04
Inconel 601 Cold-Drawn Bar
Closer diameter control with higher strength, stress-relieved where straightness matters.
Request Availability →
05
Inconel 601 Hex Bar
Hexagonal sections sized across flats for fasteners and multi-flat fixture parts.
Request Availability →
06
Inconel 601 Square Bar
Square sections cut to your width and length for frames and supports.
Request Availability →
07
Inconel 601 Flat Bar
Flat sections supplied to specified thickness and width for fabricated assemblies.
Request Availability →
08
Inconel 601 Forged Bar
Larger diameters and shaped sections with a controlled wrought structure.
Request Availability →
09
Centreless-Ground Rod
Ground diameter and straightness for spindles, pins and precision components.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Alloy 601 bar is chosen where furnace atmospheres, not liquids, decide material life. Most of our 601 bar goes into thermal processing, petrochemical, and turbine hardware. Tell us your peak temperature and cycle rate at quotation.
Discuss Your Application →
01
Radiant Tubes and Muffles
Heated tubes and covers that run hot in air and must not shed scale.
02
Carburizing Baskets and Trays
Fixtures that carry loads through carburizing and carbonitriding cycles.
03
Furnace Fixtures and Retorts
Structural parts and sealed vessels held at temperature for long campaigns.
04
Thermocouple Protection Tubes
Sheaths that keep sensors readable in aggressive hot gas streams.
05
Burner Nozzles and Flame Shields
Components sitting directly in the flame path of industrial burners.
06
Process Heaters and Reformers
Heater internals, catalyst grids, and reformer hardware in a petrochemical plant.
07
Gas Turbine Combustion Parts
Combustor and exhaust hardware exposed to hot oxidizing gas flow.
08
Incineration and Kiln Hardware
Grates, supports and fittings in waste incineration and ceramic kilns.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below follow ASTM B166 for UNS N06601 bar and rod, with iron as the balance of the melt. Aluminium is the addition that separates 601 from Alloy 600. The mill test certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | 58.0–63.0% |
| Chromium (Cr) | 21.0–25.0% |
| Aluminium (Al) | 1.0–1.7% |
| Iron (Fe) | Balance |
| Carbon (C) | 0.10% max. |
| Manganese (Mn) | 1.00% max. |
| Silicon (Si) | 0.50% max. |
| Copper (Cu) | 1.00% max. |
| Sulphur (S) | 0.015% max. |
Mechanical Properties
Minimums are taken from ASTM B166 for UNS N06601 rod and bar and change with condition and section size. Annealed stock forms and machines easily; hot-finished stock suits parts that see no further softening. Confirm the ordered condition at quotation.
| Condition | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| Annealed (cold-worked or hot-worked) | ≥95 ksi (655 MPa) | ≥35 ksi (240 MPa) | 30% |
| Hot-finished, as-worked | ≥85 ksi (585 MPa) | ≥35 ksi (240 MPa) | 15% |
Some published datasheets quote 80 ksi (550 MPa) and 30 ksi (205 MPa) as the annealed minimum; the applicable ASTM B166 edition and the ordered condition decide final acceptance.
Physical Properties
Typical room-temperature values below support design work rather than acceptance testing. Alloy 601 is non-magnetic at ambient temperature and stays so through its working range.
| Property | Value |
|---|---|
| Density | Approx. 8.11 g/cm³ |
| Melting range | Approx. 1360–1411 °C |
| Modulus of elasticity | Approx. 206 GPa |
| Thermal conductivity at 20 °C | Approx. 11.2 W/m·K |
| Specific heat at 20 °C | Approx. 450 J/kg·K |
| Electrical resistivity at 20 °C | Approx. 1.19 µΩ·m |
| Thermal expansion, 20–100 °C | Approx. 13.8 µm/m·K |
| Curie temperature | Below −196 °C |
| Magnetic behaviour | Non-magnetic at ambient temperature |
Standards
ASTM B166 governs bar and rod, with ASME SB166 used in pressure equipment. The designations below are cross-reference identifiers, not separate approvals. AMS 5715 covers a defined range of forms, so scope is confirmed before we apply it.
| Standard / Designation | Scope |
|---|---|
| ASTM B166 | Nickel-chromium-iron and related alloy rod, bar and wire |
| ASME SB166 | ASME edition for rod, bar and wire |
| SAE AMS 5715 | Nickel alloy 601 bars, forgings and rings |
| UNS N06601 | Material designation for Inconel 601 |
| W.Nr. 2.4851 / NiCr23Fe | European designation for Alloy 601 |
| JIS NCF 601 | Japanese designation |
| EN 10095 | Heat-resistant steels and nickel alloys |
| DIN 17742 / DIN 17752 | Wrought nickel alloys — chemistry and bar |
| ISO 9723 / ISO 9724 | Nickel and nickel alloy bar and rod |
| BS NA 49 | British nickel-chromium bar designation |
Dimensions
Ranges below reflect normally produced sections; exact availability depends on condition, finish, and quantity, confirmed at quotation. Tolerances follow ASTM B166 for the ordered condition. State diameter, section, length, and finish in the inquiry.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–500 mm dia. | Cut to length or random |
| Round Rod | 3–50 mm dia. | Cut to length |
| Bright Bar | 6–150 mm dia. | Cut to length or random |
| Square Bar | 10–150 mm | Cut to length or random |
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged Bar | 100–500 mm dia. or forged section | Cut to length |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Cut to length |
Diameters and lengths outside these ranges are reviewed against the production route before quotation.
Surface Finishes
Finish is chosen for the next step, whether machining allowance, welding or a scale-free furnace surface. Availability depends on diameter, condition, and order quantity. Each finish is agreed with the order, not assumed from stock.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked (as-rolled or forged) | Parts that will be machined to size |
| Annealed and pickled | Scale-free surface for welding and furnace service |
| Solution annealed | Condition set for high-temperature duty and forming |
| Cold drawn | Close diameter control with a bright surface |
| Peeled | Uniform diameter with machined skin for further turning |
| Centreless ground | Tight diameter and straightness for spindles and pins |
| Polished | Reduced roughness for visible or product-contact parts |
| Rough turned | Controlled machining allowance on large or forged bar |
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
One coordinator keeps your Inconel 601 order moving from first message to shipment. Oxidation life depends on the annealing condition, so that route is fixed before cutting. Most quotations carry a confirmed lead time, and trial lengths help you qualify a size.
1
Send an Inquiry
Give the grade, ASTM B166 condition, diameter, length, quantity, and duty temperature.
2
Confirm the Duty
Tell us the peak temperature, furnace atmosphere, and cycle rate your part sees.
3
Review the Quotation
Price and lead time come from size, quantity, condition, and documents.
4
Confirm the Order
Grade, dimensions, inspection level, and delivery terms are recorded before cutting.
5
Production and Annealing
The heat is worked, solution-annealed, and tested to the specified condition.
6
Shipment and Delivery
Certificates and export documents ship with the bar; terms are confirmed with you.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The Inconel 601 radiant tube bar we ordered came with aluminium and chromium on the certificate, and the first campaign ran without scale flaking at the welds.”
★★★★★
“Carburizing baskets machined from this bar held shape through repeated cycles, and the cut lengths arrived ready for our jig assembly.”
★★★★★
“We trialled one bar of solution-annealed 601 before the full heater rebuild; the surface and straightness matched the drawing, so the rest followed.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification covers Inconel 601 bar and rod?
ASTM B166 / ASME SB166.
What is your MOQ for Inconel 601 bar?
A single bar for most stocked diameters.
What are your trade terms for Inconel 601 bar?
FOB for most orders; EXW, CFR, and CIF on request.
How is the price of Inconel 601 bar calculated?
By weight, with the nickel and chromium share fixed at quotation.
What is the lead time for Inconel 601 bar?
Stock diameters ship in 7-15 days; made-to-order sizes take about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 ships with every heat; 3.2 is booked on request.
How hot can Inconel 601 bar run in service?
Up to 1250 °C in clean air, depending on atmosphere, load and cycle rate.
Is Inconel 601 resistant to carburizing atmospheres?
Yes. The alumina sub-scale slows carbon pickup through carburizing and carbonitriding cycles.
Can you supply custom diameters and cut lengths?
Yes. Peeling, grinding and cutting cover sizes and lengths outside stock.
How does Inconel 601 differ from Inconel 600?
601 adds aluminium and more chromium for oxidation and carburization resistance; 600 suits chloride and caustic duty instead.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the grade, ASTM B166 condition, diameter, quantity and duty temperature to receive price, lead time and certificates in one reply. The annealing route is fixed before production, so the bar you approve is the bar that arrives. Inconel 601 bar and rod are stocked in common diameters or produced to your drawing, with single-bar trials accepted for many sizes.
