Comparison of Inconel 600 tubing and 601 nickel alloy seamless tubing

Both Inconel 600 and 601 alloy tubes are nickel-chromium alloys, but Inconel 601 welded tubes have added aluminum, resulting in superior high-temperature oxidation resistance and making them more suitable for furnace components. Inconel 600 tubes, on the other hand, offer broader corrosion resistance, particularly excelling in resisting chloride stress corrosion, making them ideal for chemical/marine applications. The main difference lies in the Cr/Al content of the 601 seamless tube, making it more suitable for oxidation resistance (e.g., for heat exchangers), while the 600 welded tube offers better overall corrosion resistance and weldability under less extreme high-temperature/corrosive conditions. In highly oxidizing, high-temperature environments, 601 square tubes generally outperform 600 round tubes.

What are the standard pipe materials for Inconel 600?

These pipe materials conform to ASTM B167, B829, and B517 standards. Sizes vary depending on the ASTM, ASME, and API standards. Seamless Inconel 600 pipes range in diameter from 4mm to 219mm, while welded and arc-welded pipes range in diameter from 5mm to 1219.2mm, with wall thicknesses ranging from 0.5mm to 20mm.

Inconel 600 pipe is a high-performance nickel-chromium-iron alloy pipe material designed for transporting fluids in extreme high-temperature environments (up to approximately 1150°C) and highly corrosive media (such as chlorides, caustic alkalis, and various acids and alkalis). Its core advantages lie in its superior high-temperature strength retention, excellent oxidation resistance, and resistance to chloride ion stress corrosion cracking. It is primarily used in critical applications such as heat transfer tubes in nuclear power plant steam generators, petrochemical cracking furnace tubes, radiant tubes in heat treatment equipment, and pipelines in harsh chemical processes. It is a top-tier, reliable pipe solution for demanding conditions where stainless steel cannot meet the requirements, but at a significantly higher cost.

Inconel 601 pipe is a special pipe material made from a nickel-chromium-iron-aluminum reinforced alloy. Its core characteristic is unparalleled resistance to oxidation, carburization, and high-temperature sulfur corrosion at extreme high temperatures (up to approximately 1250°C), while maintaining excellent thermal shock resistance and creep resistance. It is designed specifically for harsh environments such as high-temperature heat treatment furnaces, industrial combustion systems, petrochemical cracking units, and aerospace hot-end components that require long-term exposure to intense oxidation-reduction atmospheres and thermal cycles, making it a top choice for solving ultra-high temperature corrosion and thermal fatigue problems.

Standard Specification For Inconel 600 / 601 Pipes & Tubes

Specifications : ASTM B167, B163, B516, B517, B704, B705 / ASME SB167, SB163, SB516, SB517, SB704, SB705

Dimensions : ASTM, ASME and API

Size Range : 15"NB – 150"NB

Outer Diameter : 6.35 mm OD upto 254 mm OD in 0.6 TO 20 mm thickness.

Schedule : SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS

Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes

Length : Single Random, Double Random & Cut Length

Form : Round Pipes/Tubes, Square Pipes/Tubes, Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tube

Grade : 600, 601

Inconel 600 / 601 Pipe and Tube Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
Inconel 600	2.4668	N06600	NCF 600	NA 13	МНЖМц 28-2,5-1,5	NC15FE11M	NiCr15Fe
Inconel 601	2.4851	N06601	NCF 601	NA 49	XH60BT	NC23FeA	NiCr23Fe

Chemical Composition of Inconel 600 / 601 Pipe Tube

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr
Alloy 600	0.15 max	1.00 max	0.50 max	0.015max	0.50 max	6.00 – 10.00	72.00 min	14.00 – 17.00
Alloy 601	0.10 max	1.0 max	0.5 max	0.015 max	1.0 max	Balance	58.0 – 63.0	21.0 – 25.0

Mechanical Properties of Inconel 600 / 601 Pipe Tube

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
Alloy 600	8.47 g/cm3	1413 °C (2580 °F)	Psi – 95,000 , MPa – 655	Psi – 45,000 , MPa – 310	40 %
Alloy 601	8.1 g/cm3	1411 °C (2571 °F)	Psi – 80,000 , MPa – 550	Psi – 30,000 , MPa – 205	30 %

Why Choose Gnee as Your Nickel-Based Alloy Supplier

✅ Over 18 years of export experience, products sold to more than 80 countries

✅ Certified by ISO, SGS, and BV

✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars

✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging

✅ Fast delivery within 7-15 days, supported by global logistics partners

📦 Packaging and Shipping

All stainless steel products are packaged using the following methods:

Wooden pallets or crates

Moisture-proof packaging

Labels with furnace number, standard, and size labels

Shipped worldwide by sea, air, or express

About Gnee Steel

Gnee Steel is a supplier of Inconel 600 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with Inconel 600 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.

Gnee Steel stocks and sells Inconel 600, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.