Inconel 601 Round Bar
➡️ Alloy 601 | UNS N06601 | W.Nr. 2.4851
➡️ ASTM, EN, JIS & International Standards
➡️ Supply Conditions
➡️ Multiple Diameters & Supply Lengths
➡️ Global Export & International Delivery
Country of Origin:
Europe, Japan, USA
Material Type:
Nickel Alloy
UNS Number:
N06601
Wr. No.:
2.4851
MTC Available:
EN 10204 3.1
Product Description for Inconel 601 Round Bar
Inconel 601 Round Bar is a solid cylindrical bar produced from nickel-chromium-iron alloy UNS N06601, with the material number 2.4851. Bar and rod are supplied to ASTM B166 and ASME SB166, and the alloy is widely known by the trade name Inconel 601, a registered trademark of Special Metals Corporation.
The alloy contains 58.0-63.0% nickel and 21.0-25.0% chromium with an aluminium addition of 1.0-1.7% and a balance of iron. The aluminium is what makes the alloy what it is. At high temperature it forms a tightly adherent alumina-rich sub-scale beneath the chromium oxide layer, and that sub-scale resists spalling under severe thermal cycling far better than chromium oxide on its own. The alloy therefore holds up against oxidation and against carburising and nitriding atmospheres at temperatures up to roughly 1200 deg C.
The high nickel content gives good resistance to chloride-ion stress-corrosion cracking and to aqueous corrosion, while the austenitic structure provides high strength and useful creep and rupture properties at elevated temperature together with good ductility at room temperature.
Bar is supplied in the solution annealed condition, hot-finished or cold-finished, in diameters from about 6 mm to 250 mm and lengths of 3 to 6 m. Minimum properties under ASTM B166 are 550 MPa tensile strength, 205 MPa yield strength and 30% elongation.
Typical applications include furnace muffles, retorts and radiant tubes, thermocouple protection tubes, heat-treatment baskets and fixtures, petrochemical and refinery heater components, gas turbine combustion hardware, thermal reactor and incinerator internals, and ammonia and nitric acid plant parts. Industries served include heat treatment, petrochemical, power generation, waste incineration and chemical processing.
Common Applications of Inconel 601 Round Bar
➡️ Machined shafts, spindles, valve stems, pump sleeves and pins for food, beverage, dairy and pharmaceutical equipment, where the passive chromium oxide film resists both product acids and caustic clean-in-place chemicals.
➡️ Fasteners, studs, bolts, threaded rod and anchor components produced from bar stock, chosen for corrosion resistance combined with the ductility needed for cold heading and thread rolling.
➡️ Chemical, water treatment and general process plant parts such as agitator shafts, flange blanks, nozzles and support components handling water, steam and mildly corrosive media free of significant chlorides.
➡️ Architectural and structural hardware including handrail stanchions, balustrade fittings, tension rods and bollards, where a bright ground or polished bar finish provides both appearance and low maintenance.
International Equivalent Grade for Alloy 601 Round Bar
Standard
Country / Region
Grade
ASTM B166
USA
UNS N06601 - rod, bar and wire
ASME SB166
USA
SB166 UNS N06601
DIN 17752 / DIN 17754
Europe / EU
NiCr23Fe (2.4851)
EN 10095
Europe / EU
NiCr23Fe (2.4851) - heat resisting alloy
JIS G4901
Japan
NCF601
Technical Specification for Inconel 601 Round Bar
Specification
Value
Unit
Material
Nickel-chromium-iron alloy
-
Grade
Alloy 601 / UNS N06601 / 2.4851
-
Product Form
Round bar / rod
-
Standard
ASTM B166 and ASME SB166
-
Diameter
6 - 250 (available range)
mm
Length
3 - 6 (standard random or fixed)
m
Manufacturing Process
Hot rolled, forged or cold drawn
-
Production Route
Air induction or vacuum induction melting with ESR or AOD refining, hot working, solution annealing
-
Surface Finish
Hot-finished and pickled, cold-drawn, peeled, turned, ground, polished
-
Heat Treatment / Delivery Condition
Solution annealed
-
Solution Annealing Temperature
1100 - 1180 followed by rapid cooling (typical)
deg C
Maximum Continuous Service Temperature
1200 in oxidising atmosphere (typical)
deg C
Tolerance Standard
ASTM B166 and as agreed
-
Carbon Equivalent (CEV)
Not applicable to nickel alloys
-
Density
8.11 (typical)
g/cm3
Melting Range
1360 - 1411 (typical)
deg C
Thermal Conductivity
11.2 at 20 deg C (typical)
W/m.K
Coefficient of Thermal Expansion
13.75 at 20 - 100 deg C (typical)
micro-m/m.K
Specific Heat
448 at 20 deg C (typical)
J/kg.K
Electrical Resistivity
1.19 (typical)
micro-ohm.m
Modulus of Elasticity
206 at room temperature (typical)
GPa
Magnetic Properties
Non-magnetic, relative permeability approximately 1.0
-
Applicable Testing Standard
ASTM E8 / E8M, ASTM E1473, ASTM E18, ASTM B166
-
Certification / Inspection Documents
EN 10204 Type 3.1 or 3.2 mill test certificate
-
Technical Specifications
Get the key technical specifications for Inconel 601 Round Bar
Inconel 601 Round Bar is supplied to ASTM B166 for nickel-chromium-iron alloy rod, bar and wire, adopted by ASME as SB166 for pressure applications. The alloy is delivered in the solution annealed condition, produced by annealing at approximately 1100-1180 deg C followed by rapid cooling.
The alloy is not hardenable by heat treatment. It contains no precipitation-hardening additions, so strength above the annealed minima is obtained only by cold work, and any cold-worked material intended for high-temperature service should be annealed to avoid recrystallisation and distortion in the furnace.
Machining is more demanding than for stainless steel. The alloy work hardens rapidly, so rigid setups, sharp positive rake tooling, slow speeds, heavy positive feeds and generous coolant are required, and the tool should never be allowed to dwell.
An important service consideration is that although the alloy is highly resistant to oxidising, carburising and nitriding conditions, it should not be used in strongly sulphidising atmospheres at high temperature. The high nickel content forms low-melting nickel-sulphur eutectics, which cause rapid attack. Ambient sulphur contamination from marking materials, lubricants and greases must also be removed before high-temperature exposure.
Testing typically includes chemical analysis to ASTM E1473, tensile testing to ASTM E8 / E8M, hardness to ASTM E18, and where specified grain size determination and intergranular corrosion testing. Material is supplied with an EN 10204 Type 3.1 certificate as standard.
Chemical Composition for Inconel 601 Round Bar
Element
Symbol
Min
Max
Unit
Nickel
Ni
58.0
63.0
%
Chromium
Cr
21.0
25.0
%
Aluminium
Al
1.0
1.7
%
Carbon
C
-
0.10
%
Manganese
Mn
-
1.00
%
Silicon
Si
-
0.50
%
Sulfur
S
-
0.015
%
Copper
Cu
-
1.00
%
Iron
Fe
Balance
Balance
%
Chemical Composition
View the chemical composition and applicable material limits for Alloy 601 Round Bar
Nickel at 58.0-63.0% provides the austenitic matrix and is the basis of the alloy’s resistance to chloride-ion stress-corrosion cracking, to carburisation and to nitriding. High nickel content lowers carbon solubility and diffusion, which is precisely why carbon-bearing furnace atmospheres attack this alloy far more slowly than they attack austenitic stainless steels.
Chromium at 21.0-25.0% forms the primary protective chromium-oxide scale that gives resistance to oxidation and to hot corrosion in oxidising environments, and also contributes to aqueous corrosion resistance in oxidising media.
Aluminium at 1.0-1.7% defines Alloy 601 and separates it from Alloy 600. At high temperature aluminium diffuses outward and forms an alumina-rich sub-scale beneath the chromium oxide. Alumina is more thermodynamically stable, grows more slowly and adheres far better under thermal cycling than chromium oxide alone, so the scale resists spalling during repeated heating and cooling. That is what keeps the alloy working in cyclic furnace service to about 1200 deg C.
Iron makes up the balance, typically around 14%, and reduces cost while maintaining an acceptable structure.
Carbon is limited to 0.10% maximum, high enough to contribute carbide strengthening at elevated temperature but low enough to avoid excessive sensitisation. Silicon, manganese and copper are limited as residuals, and sulphur is held to 0.015% because it damages hot workability and forms low-melting nickel sulphides.
Mechanical Properties for Inconel 601 Round Bar
Mechanical Property
Value
Unit
Tensile Strength
550 (minimum, solution annealed)
MPa
Yield Strength 0.2% Proof
205 (minimum, solution annealed)
MPa
Elongation in 50 mm
30 (minimum, solution annealed)
%
Hardness
Typically 65 - 90 in the annealed condition
HRB
Reduction of Area
Not specified by ASTM B166
%
Impact / Charpy V-Notch
Not required by ASTM B166 unless specified
J
Modulus of Elasticity
206 at room temperature (typical)
GPa
Mechanical Properties
Check the key mechanical properties and performance requirements of Alloy 601 Round Bar
The values listed are the room-temperature minima required by ASTM B166 for Inconel 601 rod and bar in the solution annealed condition: 550 MPa minimum tensile strength, 205 MPa minimum yield strength at 0.2% offset, and 30% minimum elongation. Testing is performed to ASTM E8 / E8M.
The alloy is not age hardenable. Solution annealing dissolves carbides and restores maximum ductility, and any strength above the annealed minima comes from cold work. Cold-drawn or cold-worked bar therefore tests considerably higher in tensile and yield strength with reduced elongation, so the delivered condition must be stated on the order. Cold work is not retained in service, since the material recrystallises on heating.
Room-temperature properties are rarely the governing design criterion. The alloy is chosen for elevated-temperature behaviour, where it retains useful strength and shows good creep and stress-rupture properties. Above roughly 540 deg C, design should use the time-dependent allowable stresses tabulated in the ASME Boiler and Pressure Vessel Code rather than the ambient minima.
Long exposure between roughly 550 and 750 deg C can precipitate carbides and cost some room-temperature ductility, though high-temperature performance is largely unaffected. Components that will be handled or shock-loaded cold after extended hot service should be assessed with this in mind.
Dimension / Sizes for Inconel 601 Round Bar
Dimension / Size
Value
Unit
Diameter (available range)
6 - 250
mm
Standard Length
3 - 6
m
Custom Length
Cut to length on request
-
Diameter Tolerance
Per ASTM B166 or as agreed
-
Length Tolerance
Per ASTM B166 or as agreed
-
Straightness Tolerance
As agreed at time of order
-
End Condition
Square cut, saw cut, chamfered or as ordered
-
Surface Finish
Hot-finished and pickled, cold-drawn, peeled, turned, ground, polished
-
Cut-to-Length Availability
Available
-
Dimensional Standard
ASTM B166
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for Alloy 601 Round Bar
Pricing for Inconel 601 Round Bar
Round Bar Prices are generally quoted per kilograms or meters tonnes and can fluctuate with the global raw material and market prices. The final price will depend on a variety of factors, including the grade size, diameter, length, surface finish, the quantity and whether the bars are cut to length or in standard lengths.
For smaller quantities, we can also quote per metre or per piece basis once the required dimensions have been confirmed. Container-loads or orders that are larger in size are typically priced per tonne, based upon the specifications required and the supply conditions.
Please provide your desired dimensions, grades, length number, and end for a current quote including the lead time applicable and details for certification.
Pricing
Get current Inconel 601 Round Bar pricing based on size, quantity, grade, finish, and delivery requirements.
Why Choose Us
Euro Steel Bars is an international distributor, stockist and exporter of stainless round steel bars that cover carbon, stainless alloy, special grades. We stock a variety of sizes and grades. We guarantee every order with mill test certificates as well as full quality-assurance documentation. Our name speaks to our roots: European-sourced materials that is backed by the certificates and rigor that buyers from Asia as well as the Gulf and Africa are looking for.
Each bar we deliver is accompanied by EN 10204 3.1 mill test certificates as well as complete documentation of quality, so what you receive corresponds to what’s written in the documents. We carry a selection of sizes and grades ready for transport, and cut length upon the request of customers, which results in quicker lead times, whether you’re ordering just a one-off spec or a complete project tonnage.
We operate an actual wholesale business that is that is supported with an internationally-operated supply chain therefore we are able to serve fabricators sourcing one grade the same way in the same way as an EPC contractor who is placing a large order. Our clients include manufacturers, fabricators EPC construction companies, engineers oil and gas projects as well as construction companies. we design our inventory as well as documentation to show what buyers need to bring projects forward.
Our customers trust us across Qatar, Oman, Bahrain, Kuwait, Jordan, Malaysia, Singapore, Thailand, Taiwan, Turkey, Italy and South Africa. If you’re looking to source an Gulf energy project, or a construction project within Southeast Asia, you get the same quality of certified material, the exact documentation, and the exact delivery procedure.
Frequently Asked Questions
What is Inconel 601 Round Bar?
What standard does Inconel 601 Round Bar comply with?
What is the difference between Alloy 600 and Alloy 601?
What is the maximum service temperature of Alloy 601?
What are the key mechanical properties of Inconel 601?
Can Inconel 601 be welded?
Where should Alloy 601 not be used?
What sizes and finishes are available?
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