Comparison of Inconel 600 and 625 pipes

Due to its higher molybdenum content, Inconel 625 tubing offers superior strength and corrosion resistance, making it ideal for harsh environments such as marine and petrochemical plants. Inconel 600 tubing, on the other hand, is better suited for high-temperature applications with lower corrosion requirements, such as chemical processing and heat treatment. Alloy 625 tubing offers superior mechanical properties (higher strength, but lower hardness) and corrosion resistance, while Alloy 600 tubing is more economical and performs well at high temperatures without chloride corrosion issues.

What are the advantages of Inconel 625?

Inconel 625 alloy is an ideal choice for seawater applications because it possesses the following characteristics: it is not prone to localized corrosion (pitting and crevice corrosion), has high corrosion fatigue strength, high tensile strength, and is resistant to chloride stress corrosion cracking.

Standard Specification For Inconel 600 / 625 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, 625

Inconel 600 / 625 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 625	2.4856	N06625	NCF 625	NA 21	ХН75МБТЮ	NC22DNB4M	NiCr22Mo9Nb

Chemical Composition of Inconel 600 / 625 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 625	0.10 max	0.50 max	0.50 max	0.015 max	-	5.0 max	58.0 min	20.0 - 23.0

Mechanical Properties of Inconel 600 / 625 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 625	8.4 g/cm3	1350 °C (2460 °F)	Psi – 1,35,000 , MPa – 930	Psi – 75,000 , MPa – 517	42.5 %

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.