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HASTELLOY X（UNSN06002） PIPE / TUBE
Nickel-Chromium-Iron-Molybdenum Alloy for High-Temperature & Oxidation Resistance
HASTELLOY X pipe/tube is selected for high-temperature oxidation service and furnace process lines where strength, fabricability, and thermal stability are required. It is widely used for tubing in pyrolysis operations and other high-temperature process equipment.
As a professional Chinese nickel-based alloy manufacturer, we supply HASTELLOY X pipe and tube with stable chemistry, consistent mechanical properties, and flexible dimensional customization for global industrial users.
Typical supply range (custom sizes and tolerances available upon request):
Item | Range / Options | Notes |
Outside Diameter (OD) | 6 – 600 mm | Tube or pipe per project; NPS/DN on request. |
Wall Thickness (WT) | 0.5 – 30 mm | Define tolerance if critical. |
Length | Up to 12000 mm | Random / fixed length available by agreement. |
Type | Seamless / Welded | ASTM B622 (seamless); ASTM B619/B626 (welded) per requirement. |
Surface finish | Pickled / Bright / Polished | ID/OD finish by agreement. |
End | Plain / Beveled | End prep available for welding and assembly. |
Delivery condition | Solution annealed (standard) | Additional NDT/HT per project requirement. |
Dimension definition: OD × WT × LENGTH.
• Excellent high-temperature strength and oxidation resistance
• Good fabricability and weldability for complex fabricated structures
• Good resistance to carburizing and nitriding furnace atmospheres
• Resistant to stress-corrosion cracking in certain petrochemical environments
• Suitable for oxidizing, reducing, and neutral atmospheres in furnace service
Element | Ni | Cr | Mo | Fe | W | Mn | Si | C |
HASTELLOY X | Balance | 20.5–23.0 | 8.0–10.0 | 17.0–20.0 | 0.2–1.0 | ≤1.0 | ≤1.0 | 0.05–0.15 |
Nominal/typical chemistry is shown. Typical additions include Co (0.5–2.5 wt.%) and minor elements such as B (≤0.008) to support high-temperature performance.
Property | Value |
Tensile Strength (Rm) | ≈ 760–783 MPa |
Yield Strength (Rp0.2) | ≈ 340–376 MPa |
Elongation | ≈ 45–49 % |
Hardness | ≈ 87–92 HRB |
Mechanical properties may vary slightly with product form and heat treatment condition.
Standard System | Specification |
ASTM / ASME | ASTM B622 / ASME SB-622 (seamless); ASTM B619/B626 (welded) |
EN | EN 10204 |
UNS | N06002 |
DIN | 2.4665 |
JIS | NW6002 |
Item | Range |
OD | 6 – 600 mm |
WT | 0.5 – 30 mm |
Length | up to 12000 mm |
Type | Seamless / Welded |
End | Plain / Beveled |
Custom sizes, tight tolerances, and cut-to-length service are available upon request.
• Solution Annealed
• Bright Annealed / Pickled (where applicable)
• Tubing for pyrolysis operations and flash drier components
• Furnace radiant tubes and high-temperature process lines
• Gas turbine and hot-gas path auxiliary tubing
• Petrochemical furnace pigtails and manifolds (project-defined)
HASTELLOY X can be fabricated and welded using standard nickel-alloy practices.
Common welding methods include:
• GTAW (TIG)
• GMAW (MIG)
• SMAW
Matching filler metals such as ERNiCrMo-2 are typically recommended.
• EN 10204 3.1 Material Test Certificate
• Chemical composition analysis
• Mechanical testing (tensile, hardness)
• PMI / XRF testing available
• Dimensional inspection
• Third-party inspection on request (BV, SGS, TUV, DNV)
• PVC protective film on surface (where applicable)
• Wooden pallets or export-grade crates
• Seaworthy packaging for long-distance shipment
• Global delivery by sea, air, or multimodal transport
• Professional nickel-based alloy manufacturer in China
• Stable raw material sourcing and melting control
• Wide stock and fast production cycle
• Competitive pricing for global projects
• Experience with international EPC, OEM, and distributors
For quotation or technical consultation, please provide:
• Required grade (HASTELLOY X)
• OD × WT × Length
• Quantity
• Surface finish / delivery condition
• Application environment
Our technical team will respond with datasheets, pricing, and delivery schedule promptly.
