Heat-Treating Furnaces
Industrial heat-treating furnaces use the alloy for radiant tubes and burner nozzles, and for the thermocouple protection sleeves that carry temperature sensors through the furnace wall into the working zone.
ASTM B167 / ASME SB-167 / UNS N06601 / W.Nr. 2.4851
Inconel 601 Seamless Pipes Manufacturer in Thailand
At its Ban Bueng, Chonburi plant, Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. produces Inconel 601 seamless pipes to ASTM B167 / ASME SB-167 for radiant tube runs, fired-heater sections and hot process lines. The grade is identified as UNS N06601, with W.Nr. 2.4851 as its European number, and it sits beside 600, 625 and 718 in the Inconel seamless pipes range we manufacture. Quotations, order documents and export papers are handled by the Bang Phli, Samut Prakan sales office.
Inconel 601 seamless pipeUNS N06601 / W.Nr. 2.4851
- 6 to 457 mmOutside diameter
- 1 to 65 mmWall thickness
- Up to 18 mLength
- EN 10204 3.1Test certificate
EN 10204 3.1 certificate / 3.2 on request
ASTM B167 Inconel 601 Seamless Pipes: Specification
Every line of a 601 inquiry can be checked against the envelope and conditions below before a drawing is revised, and the quotation confirms the size, wall and condition of each item.
- Standard
- ASTM B167 / ASME SB-167
- Grade
- Inconel 601 (UNS N06601)
- W.Nr.
- 2.4851
- Outside Diameter
- 6 to 457 mm
- Wall Thickness
- 1 to 65 mm
- Length
- Up to 18 m
- Ordering Basis
- Standard pipe size and schedule
- Delivery Condition
- Cold-worked annealed or hot-worked annealed
- Ends
- Plaincut and deburred
- Testing
- Hydrostatic or non-destructive electric test on every length
- Chemical and tension tests per lot
- Certificate
- EN 10204 3.1 (3.2 on request), with test report
- Form
- Seamless
ASTM B167 is mirrored for boiler and pressure vessel code work as ASME SB-167, and it fixes the composition limits, the tensile minimums, the delivery conditions and the pressure or electric test for the seamless pipe and tube it covers, N06601 among them. The standard knows this alloy only by its UNS number, N06601; Inconel 601 and Alloy 601 are commercial names, so the UNS number is what a purchase order line should carry. Diameter, wall and cut-length tolerances for an ASTM B167 Inconel 601 seamless pipe are confirmed on the quotation for each size, and the cold-worked bands for mid-size pipe are tabulated under the sizes section. A diameter-and-wall order in the same alloy is handled as tube, which we supply as Inconel 601 seamless tubes.
Testing under ASTM B167 is organized by lot. A chemical lot is simply one heat. For tension testing, a lot covers all material of one heat, one nominal size (length excepted) and one condition, and pipe that cannot be identified by heat is grouped in lots of no more than 500 lb (227 kg). Each lot receives one chemical analysis and one tension test. Every ASME SB-167 601 seamless pipe length is then proved on its own, either hydrostatically at 1000 psi (6.9 MPa), provided the resulting fiber stress stays within the standard's allowable value, or by a non-destructive electric test, and a length that leaks is rejected. Those results are entered on an EN 10204 3.1 (3.2 on request) certificate, and an outside inspection agency can attend when the contract calls for one.
Chemical Composition of UNS N06601 Seamless Pipe
Chromium at 21.0 to 25.0% and aluminum at 1.0 to 1.7% are the figures that set this alloy apart, with nickel held between 58.0 and 63.0% and iron making up the remainder. Our Inconel 600 seamless pipes share ASTM B167 but carry a 72.0% nickel minimum and no aluminum requirement, so 601 is the lower-nickel composition of the two, with aluminum added. Manganese is capped at 1.5% and copper at 1.0%. Each heat is analyzed against the limits below.
- FeIron, Remainder
- NiNickel, 58.0 to 63.0
- CrChromium, 21.0 to 25.0
- AlAluminum, 1.0 to 1.7
- MnManganese, 1.5 max
UNS N06601601
| Element | Limit, % (ASTM B167, UNS N06601) |
|---|---|
| Ni (Nickel) | 58.0 to 63.0 |
| Cr (Chromium) | 21.0 to 25.0 |
| Fe (Iron) | Remainder |
| Al (Aluminum) | 1.0 to 1.7 |
| Mn (Manganese) | 1.5 max |
| Cu (Copper) | 1.0 max |
| C (Carbon) | 0.10 max |
| Si (Silicon) | 0.5 max |
| S (Sulfur) | 0.015 max |
Mechanical Properties of Seamless Nickel Alloy 601 Pipe
ASTM B167 gives UNS N06601 a single row of room-temperature minimums, whatever the diameter and whichever annealed condition is supplied.
| Condition and Size | Tensile Strength, min | Yield Strength (0.2% offset), min | Elongation in 2 in. or 50 mm or 4D, min |
|---|---|---|---|
| Cold-worked annealed or hot-worked annealed, all sizes | 80 000 psi (550 MPa) | 30 000 psi (205 MPa) | 30% |
Swipe sideways to see the full table.
That one row is the practical contrast with UNS N06600, whose B167 minimums change with condition and again once the outside diameter passes 5 in. (127 mm). A line laid out in seamless nickel alloy 601 pipe therefore takes the same specified minimums from small bore to the top of the size range, and each lot's tension figures, printed on the certificate, show how far the delivered pipe clears them.
Equivalent Designations of Inconel 601
Inconel 601 turns up under several numbering systems on drawings and data sheets. ASTM B167 itself uses only the UNS number; the European and Japanese entries are cross-references and imply no conformity to those national standards.
- Commercial nameInconel 601, also written Alloy 601
- ASTM B167 / ASME SB-167 (USA)UNS N06601
- Europe (W.Nr.)2.4851
- Japan (JIS)NCF601
A drawing that calls for W.Nr. 2.4851 or NCF601 is quoted and supplied as UNS N06601 seamless pipe.
Seamless 2.4851 Pipe Sizes and Schedules
For this grade we produce outside diameters from 6 mm through 457 mm, wall thicknesses between 1 and 65 mm, and individual pieces as long as 18 m. Each pipe item under ASTM B167 is written as a standard pipe size plus a schedule. The standard's appendix, which is informational only, shows walls for Schedules 5, 10, 40 and 80 between nominal sizes 1/4 and 6, with gaps where a schedule is not tabulated, and leaves other schedules to agreement with the manufacturer. A heavier or intermediate wall is therefore written on the inquiry and confirmed in the quotation. Every seamless 2.4851 pipe leaves the mill with plain ends, cut and deburred, ready for end preparation in the fabrication shop.
Cold-Worked Tolerances for Seamless WNR 2.4851 Pipe
Cold-worked pipe from over 3 in. (76 mm) to 8 5/8 in. (219 mm) outside diameter is held to these ASTM B167 permitted variations:
| Nominal OD, in. (mm) | OD Plus, in. (mm) | OD Minus, in. (mm) | Nominal Wall Plus, % | Nominal Wall Minus, % | Minimum Wall Plus, % | Minimum Wall Minus, % |
|---|---|---|---|---|---|---|
| Over 3 (76) to 4 1/2 (114), incl | 0.015 (0.38) | 0.015 (0.38) | 10.0 | 10.0 | 22 | 0 |
| Over 4 1/2 (114) to 6 (152), incl | 0.020 (0.51) | 0.020 (0.51) | 12.5 | 12.5 | 28 | 0 |
| Over 6 (152) to 6 5/8 (168), incl | 0.025 (0.64) | 0.025 (0.64) | 12.5 | 12.5 | 28 | 0 |
| Over 6 5/8 (168) to 8 5/8 (219), incl | 0.031 (0.79) | 0.031 (0.79) | 12.5 | 12.5 | 28 | 0 |
Swipe sideways to see the full table.
The wall columns follow the wall as ordered: a nominal wall carries the plus-and-minus band, while a seamless WNR 2.4851 pipe ordered to minimum wall may run over but never under it. The tabulated values include eccentricity. Pipe finished hot has its own, wider tolerance table, and the quotation names the regime that applies to each size.
Applications of ASME SB-167 601 Seamless Pipe
The duties below are where this grade shows up on piping specifications. When a project specification calls for a lower-alloy stainless grade instead, that order is quoted in our stainless steel 310S seamless pipes.
Petrochemical Fired Heaters
Heater tubes in the radiation section of direct-fired heaters run in seamless Inconel 601 pipe, where the coil faces the burners across the firebox of petrochemical process units.
Ammonia Reforming and Thermal Reactors
Chemical plants route hot process gas through this alloy in thermal reactors and ammonia reforming units, joining reactor nozzles to transfer headers with welded spools cut from standard pipe sizes.
Superheaters, Reheaters and Feedwater Heaters
Steam and power systems take the grade into superheater and reheater components, high-temperature heat exchangers and boiler feedwater heaters, where the pipe forms headers and the connecting runs between tube banks.
Marine and Offshore Exhaust Lines
Vessels and offshore platforms run gas turbine exhaust lines and high-temperature heat exchanger circuits in this alloy, together with process lines that carry corrosive fluids on deck.
Shipping and Packaging of Seamless Alloy 2.4851 Pipe
Packing
Lengths are bundled or boxed in wooden cases to suit the container, with plastic end caps fitted on every piece.
Marking
Each seamless alloy 2.4851 pipe, its package or an attached tag shows the UNS number or material name, heat number, condition, ASTM B167, size, order number, weights and the consignor and consignee addresses.
Documents
The EN 10204 3.1 (3.2 on request) certificate and test report for each lot, plus a packing list keyed to heat numbers.
Inspection
An independent agency can witness dimensions and marking before the cases are closed, when the order asks for it.
Terms
FOB, CIF and CFR are all offered, priced to the discharge port named when you ask.
Seamless Inconel 601 Pipe Price per kg
Seamless Inconel 601 pipe is indicated at USD 22 to 50 per kg. Because nickel forms the bulk of the alloy, the band tracks the nickel market, while the place of an item inside it depends on nominal size, wall and cut length, since small bores and heavy or unusual walls take more work per kilogram than standard sizes. Fewer stockists carry 601 than the most common nickel alloys, so order quantity and lead time also shape the figure. A line list with sizes and quantities turns the indication into a dated quotation.
Indicative price, Inconel 601 Seamless Pipes
USD 22 to 50 per kg
Indicative only. Send your sizes and specification to Thaida for a firm quotation.
- Outside diameter
- Wall thickness
- Length
- Quantity
- Nickel price
Production in Chonburi and Export Service
Our pipe mill stands at 154 Moo.1 Map Phai, Ban Bueng, Chonburi 20170, Thailand. Contracts, quotations and shipping documents are issued from 89/18 Moo.15 Enterprize Park, Bangna-Trad Road, Bang Kaeo, Bang Phli, Samut Prakan 10540, Thailand. Besides deliveries within Thailand, consignments leave for Singapore, Malaysia, Vietnam, Indonesia, the Philippines and India.
Factory154 Moo.1 Map Phai, Ban Bueng,
Chonburi 20170, Thailand
Chonburi 20170, Thailand
Office89/18 Moo.15 Enterprize Park, Bangna-Trad Road,
Bang Kaeo, Bang Phli, Samut Prakan 10540, Thailand
Bang Kaeo, Bang Phli, Samut Prakan 10540, Thailand
Exporting to
- Singapore
- Malaysia
- Vietnam
- Indonesia
- Philippines
- India
Alloy 601 Seamless Pipe FAQ
How much aluminum does Inconel 601 seamless pipe contain?
Between 1.0 and 1.7%, the range ASTM B167 sets for UNS N06601, and the heat analysis on the certificate records the measured value for your lot. To confirm 601 rather than 600 material on arrival, chromium is the decisive reading: the standard's ranges, 21.0 to 25.0% here against 14.0 to 17.0% for UNS N06600, do not overlap.
Do cold-worked and hot-worked annealed 601 seamless pipes differ in strength?
Not in their specified minimums, because both conditions share one tensile row for every size. What differs is dimensional control: B167 gives cold-worked pipe and pipe finished hot separate tolerance tables, the hot one wider on diameter, and the quotation names the table that applies to each size. Name the condition on the order if your piping class requires one.
Does a mixed-size order of 601 seamless pipe need several tension tests?
Yes, one per lot. Each combination of heat, nominal size and condition forms its own lot, so three sizes from one heat, all cold-worked annealed, carry three tension tests and three results on the certificate. Chemical analysis stays at one per heat, because the chemical lot is the heat itself.
Should a furnace line be specified in Inconel 601 or Inconel 600?
Both grades appear in furnace work, so the grade named in the furnace designer's material specification decides. Where the choice is open, compare the B167 figures: 601 adds aluminum and more chromium and keeps one strength row for all sizes, while the hot-worked minimums of 600 drop above 5 in. (127 mm) OD.
How is out-of-roundness judged on mid-size cold-worked 601 seamless pipe?
For walls over 3% of OD, each reading up to 4 1/2 in. (114 mm) OD, ovality included, must sit inside the band; above 114 mm only the mean must, and single readings may reach twice it. Thinner walls, 3% of OD or less, are judged on the mean, with readings allowed the band plus 0.5% of nominal OD.
Which certificate and papers arrive on site with 601 seamless pipe?
A manufacturer's certification and test report, required by ASTM B167 on every order, issued as an EN 10204 3.1 (3.2 on request) certificate covering the heat analysis, the tension result for each lot and the hydrostatic or electric test passed by every length. A packing list ties heat numbers to cases; agency reports join when one is named.
Request a Quote for Inconel 601 Seamless Pipes
or email sales@thaida.co.th