Detailed explanation of Inconel 601 and Alloy 625 industrial pipe fittings

Detailed explanation of Inconel 601 and Alloy 625 industrial pipe fittings
Inconel 601 and 625 tubing are high-performance nickel alloys used in extreme environments, but they differ in composition and applications: Inconel 601 (UNS N06601), due to its aluminum content, exhibits excellent resistance to high-temperature oxidation and carburization, making it ideal for furnace applications; while Inconel 625 (UNS N06625), with its molybdenum/niobium composition, boasts superior overall corrosion resistance (acid and chloride resistance) and strength, making it the preferred material for demanding chemical, marine, and aerospace applications. The choice between these materials depends on the trade-off required between extremely high heat resistance (601) and broad chemical corrosion resistance and mechanical strength (625).
How to weld Inconel 601 alloy?
Since precision turning machines operate autonmously and without any manual intervention, they bypass the possibility of human errors seeping into the manufacturing process, leading ro defects. With codes and software programs governing the end-to-end process, the machines can deliver greater accuracy without any flaws.

About Inconel 601 and 625 Industrial Pipe Fittings
Gnee Steel is a leading supplier, manufacturer, and distributor of Inconel 601/625 industrial pipe fittings in China. We stand out with our exceptional service and stringent quality standards, leveraging these advantages to provide high-quality industrial pipe fittings to customers worldwide. Each industrial pipe fitting is made from raw materials carefully selected by our experts to meet global quality standards. Our experts manufacture Inconel 601/625 industrial pipe fittings to standard specifications, including various wall thicknesses, lengths, shapes, surface standards, dimensions, and more. Customers can be assured of receiving precisely sized orders on time, every time.
Gnee Steel is committed to providing Inconel 601/625 industrial pipe fittings that meet rigorous standards and satisfy the needs of every customer. Each industrial pipe fitting undergoes rigorous testing under optimal conditions before being shipped to the customer. Our Inconel 601/625 industrial pipe fittings are subjected to a series of tests by professional quality control personnel to ensure they meet all specifications. Continuous testing is conducted under close supervision at every stage of manufacturing. Our secure warehouse stores a wide variety of industrial pipe fittings. Our warehouse is a safe place for long-term storage of industrial pipe fittings, from where we can meet the urgent needs of businesses worldwide.



Specification of Inconel 601 and Alloy 625 industrial pipe fittings
| Size: | SEA mless:from 1/8" to 2" Welded:from 24" to 96"( or as customer requirements) |
| Pressure Rating: | 3000psi -10000psi |
| OEM Accepted | yes |
| Production Capacity: | 2000 pcs per week |
| Material | Stainless steel(ASTM A403 WP304, 304L, 316, 316L, 321. 1Cr18Ni9Ti, 00Cr19Ni10,00Cr17Ni14Mo2, etc) Alloy steel(ASTM A234 WP12, WP11, WP22, WP5, WP9, WP91, 16MnR, Cr5Mo, 12Cr1MoV, 10CrMo910, 15CrMo, 12Cr2Mo1, etc) |
| Application | Petroleum, chemical, machinery, electric power, shipbuilding, construction, etc. |
| Packing Details: |
Wooden box, 38*27*17CM; Carton: 21*16*14CM/31*21*16CM. As your request. |
Equivalent Grades of Inconel 601 and Alloy 625 industrial pipe fittings
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | GOST | OR | BS | JIS | EN |
| Inconel 601 | N06601 | 2.4851 | NC23FeA | XH60BT | ЭИ868 | NA 49 | NCF 601 | NiCr23Fe |
| Inconel 625 | N06625 | 2.4856 | NC22DNB4M | ХН75МБТЮ | ЭИ602 | NA 21 | NCF 625 | NiCr22Mo9Nb |
Chemical Composition of Inconel 601/625 industrial pipe fittings
| Grade | Ni | Fe | C | Mn | Si | Cu | Cr | S | Mo | Co | Al | Ti | Nb |
| 601 | 58.0 – 63.0 | Balance | 0.10 max | 1.0 max | 0.50 max | 1.0 max | 21.0 – 25.0 | 0.015 max | 8.0-10.0 | - | 1.0 – 1.7 | - | - |
| 625 | 58.0 max | 5.0 max | 0.10 max | 0.50 max | 0.50 max | - | 20.0 - 23.0 | 0.015 max | 8.0 - 10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15 - 4.15 |
Mechanical Properties of Inconel 601 and Alloy 625 industrial pipe fittings
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 601 | 8.1 g/cm3 | 1411 °C (2571 °F) | Psi – 80,000 , MPa – 550 | Psi – 30,000 , MPa – 205 | 30 % |
| 625 | 8.4 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 517 | 42.5 % |
Inconel 601/625 industrial pipe fittings are available in stock

ASTM B564 Inconel 600 Male Connector

Inconel 601 Male Elbow

Inconel 625 hexagonal connector

600 Inconel Hex Reducing Nipple

UNS N06600 Hex Long Nipple

ASME SB564 Inconel 625 Reducing Coupling

ASME SB564 Inconel 625 Reducing Coupling

Inconel 600 Adaptor

601 Inconel Reducing Adaptor
Dimensional standards for Inconel 601/625 industrial pipe fittings

| METRIC RANGE | Dimension in mm | |||||||||
| Part | T | P | L1 | M | C | D | F | G | H | N |
| N0 | mmo/d | Length | Body | Nut | Body | |||||
| 4mMC2 | 4 | 1/8′ | 31.35 | 9.53 | 16.67 | 14.29 | 12 | 12 | 24.21 | 10.72 |
| 4mMC4 | 4 | 1/4′ | 35.72 | 14.29 | 16.67 | 14.29 | 14 | 12 | 29.37 | 15.88 |
| 6mMC2 | 6 | 1/8′ | 33.34 | 9.53 | 18.26 | 15.88 | 14 | 14 | 25.40 | 11.11 |
| 6mMC4 | 6 | 1/4′ | 33.34 | 14.29 | 18.26 | 15.88 | 14 | 14 | 30.16 | 12.70 |
| 6mMC6 | 6 | 3/8′ | 38.89 | 14.29 | 18.26 | 15.88 | 19 | 14 | 30.96 | 13.49 |
| 6mMG8 | 6 | 1/2′ | 44.45 | 19.05 | 18.26 | 15.88 | 22 | 14 | 36.51 | 15.88 |
| 8mMC2 | 8 | 1/8′ | 34.53 | 9.53 | 19.05 | 16.67 | 14 | 17 | 26.59 | 11.51 |
| 8mM04 | 8 | 1/4′ | 39.29 | 14.29 | 19.05 | 16.67 | 14 | 17 | 31.35 | 13.10 |
| 10mM02 | 10 | 1/8′ | 35.72 | 9.53 | 19.84 | 17.46 | 17 | 19 | 27.78 | 11.91 |
| 10mMC4 | 10 | 1/4′ | 40.48 | 14.29 | 19.84 | 17.46 | 17 | 19 | 32.54 | 13.49 |
| 10mMC6 | 10 | 3/8′ | 40.48 | 14.29 | 19.84 | 17.46 | 19 | 19 | 32.54 | 13.49 |
| 10mMC8 | 10 | 1/2′ | 46.04 | 19.05 | 19.84 | 17.46 | 22 | 19 | 38.10 | 15.88 |
| 10mMC12 | 10 | 3/4′ | 46.83 | 19.05 | 19.84 | 17.46 | 27 | 19 | 38.89 | 15.08 |
Price of Inconel 601/625 industrial pipe fittings
| High Nickel Alloys Male Connector | USD $8.11 - $20.21 / Piece (FOB Price) on request |
| High Nickel Alloys Hex Nipple | USD $8.11 - $20.21 / Piece (FOB Price) on request |
| High Nickel Alloys Reducing Coupling | USD $8.11 - $20.21 / Piece (FOB Price) on request |
| High Nickel Alloys Adaptor | USD $8.11 - $20.21 / Piece (FOB Price) on request |
| High Nickel Alloys Bushing | USD $8.11 - $20.21 / Piece (FOB Price) on request |
Application Of Inconel 601/625 industrial pipe fittings

Gnee Steel ensures that every product is manufactured using high-quality raw materials. We conduct comprehensive testing on every product before shipping it to our customers.
Petrochemical industry
Power generation industry
Food processing industry
Oil and gas industry
Sugar industry
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 professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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