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Inconel 625/718
DLX
bright
Customized
8.4g/cm3
965
ISO9001
10kg
1290-1350℃
10-25 days
Industry
Nickel Base Alloy
Product Description
In the rapidly growing hydrogen economy, selecting the right material for hydrogen storage and transportation is critical to ensure safety, durability, and efficiency. DLX Alloy's Premium Inconel 625 Seamless Tube/Pipe delivers unmatched reliability in high-pressure hydrogen systems.
Inconel 625 (UNS N06625) is a solid-solution strengthened superalloy renowned for its exceptional resistance to corrosive media, including chloride-induced pitting and crevice corrosion — common risks in humid or impure hydrogen environments. Its high molybdenum and niobium content provides superior resistance to hydrogen embrittlement compared to many alternatives, making it the preferred choice for Type IV hydrogen storage tanks, hydrogen refueling station piping, long-distance hydrogen pipelines, and mobile hydrogen transport trailers.
Available in seamless construction for maximum pressure integrity, DLX Inconel 625 tubes and pipes support operating pressures up to 700 bar and temperatures from cryogenic to 600°C, ensuring leak-free performance in the most challenging hydrogen energy applications.
Our Reliable Inconel 625 Tube/Pipe stands out with its robust features tailored for the petrochemical industry:
Excellent resistance to pitting corrosion, crevice corrosion, and intergranular attack in wet or impure hydrogen environments.
High nickel content and optimized microstructure minimize hydrogen diffusion and embrittlement, far outperforming precipitation-hardened alloys like Inconel 718 in gaseous hydrogen service.
High molybdenum (8-10%) ensures exceptional performance in chloride-contaminated or oxidizing conditions often encountered in hydrogen production and storage.
Maintains mechanical properties across a wide temperature range (-196°C to 980°C), ideal for cryogenic liquid hydrogen and high-temperature reforming processes.
Eliminates weld-related weaknesses, providing superior pressure containment for high-pressure hydrogen transportation systems (up to 1000 bar capable).
Easy to form, machine, and weld without post-weld heat treatment, reducing fabrication costs for complex hydrogen system components.
Resists oxidation in high-temperature hydrogen or steam environments.
Specification
| Steel grade | Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | Inconel 725 | Inconel X-750 |
| Corresponding brand | N06600/2.4816 /1Cr15Ni75Fe8 /NS312/CY40 | N06601/2.4851 /1Cr23Ni60Fe13AI /NS313 | N06625/2.4856/0Cr20Ni65Mo10bN4/NS336 | N07718/2.466 8/GH4169 | N07725 | N07750 /2.466 9/GH4145 |
Chemical composition%
| Steel grade | Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | Inconel 725 | Inconel X-750 |
| C≤ | 0.150 | 0.100 | 0.100 | 0.080 | 0.030 | 0.080 |
| Mn≤ | 1.00 | 1.00 | 0.50 | 0.35 | 0.35 | 1.00 |
| P≤ | / | / | 0.015 | 0.015 | 0.015 | / |
| S≤ | 0.015 | 0.015 | 0.015 | 0.015 | 0.010 | 0.010 |
| Si≤ | 0.50 | 0.50 | 0.50 | 0.35 | 0.20 | 0.50 |
| Cr≤ | 14.0-17.0 | 21.0-25.0 | 20.0-23.0 | 17.0-21.0 | 19.0-22.5 | 14.0-17.0 |
| Ni≤ | ≥72.0 | 58.0-63.0 | ≥58.0 | 55.0-59.0 | 55.0-59.0 | ≥70 |
| Mo | / | / | 8.0-10.0 | 2.8-3.3 | 7.0-9.5 | / |
| Cu | ≤0.50 | ≤1.50 | / | ≤0.30 | / | ≤0.50 |
| N | / | / | / | / | / | / |
| Nb | / | / | 3.15-4.15 | 4.75-5.50 | 2.75-4.00 | 0.70-1.20 |
| other | Fe:6.0-10.0 | Al:1.0-1.7 | Co:≤1.0Ai:≤0.4 0Tr:0.40Fe:≤5.0 | AI:0.20-0.80Ti:0.65-1.15B≤0.006 | Tr:1.0-1.7AI≤0.35 | Co:≤1.0 AI:0.4-1.0Tr:0.25-2.75Fe:5.0-9.0 |
Application Field
High-pressure hydrogen storage vessels (Type IV composite tanks inner liner)
Hydrogen transportation pipelines and manifolds
Hydrogen refueling station (HRS) high-pressure tubing
Mobile hydrogen tube trailers and cryogenic transfer lines
Fuel cell vehicle (FCV) onboard storage system components
Hydrogen production (electrolysis, SMR) reactor tubing
Gaseous hydrogen compressors and valves piping
Long-distance hydrogen transmission networks
DLX Inconel 625 seamless tubes/pipes are widely trusted by leading hydrogen energy companies for their proven performance in real-world high-pressure hydrogen service.
Our Advantage
CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got Iso9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.
FAQ
Factory Direct Supply with Competitive Wholesale Prices
Custom Sizes & Large Stock Availability
Fast Global Shipping & Reliable Industrial Supply
Guaranteed High Purity for Electronic & Industrial Applications
Delivery for Inconel 625 Pipe typically takes 10-30 days for small orders, depending on quantity. Large orders may require up to 60 days for production and shipping.
Yes, we accept OEM/ODM production for Inconel 625 Tube/Pipe. Simply send us your samples or drawings to get started.
Our professional team offers one-on-one support for pre-sale consultations and after-sale queries on Inconel 625 Tube/Pipe. We're here to ensure your needs are fully met.
Yes, you're welcome to visit our factory before ordering Inconel 625 Tube/Pipe. It's a great opportunity to connect and discuss your requirements.
Our production base for Inconel 625 Tube/Pipe is in Jiangsu, China, with efficient shipping worldwide based on your order size and specs.
Yes, we can send samples of Inconel 625 Tube/Pipe for your evaluation. Contact us to arrange.
