Alloy Grades
Your Current Location： Home >> Alloy Grades >> Inconel >> Bar/Rod
INCONEL 660（UNSS66286） Bar/Rod
Iron-Nickel-Chromium Precipitation-Hardenable Alloy for High Temperature Strength
INCONEL 660 bar is commonly used for machined components such as valve parts, pump shafts, fasteners, flanges and fittings where broad corrosion resistance is required. The alloy provides outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, and offers excellent weldability and fabrication characteristics for critical chemical process equipment.
As a professional Chinese nickel-based alloy manufacturer, we supply INCONEL 660 in multiple product forms 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 |
Diameter | 6 – 450 mm | Round bar standard; square/flat/hex available by request. |
Length | Up to 6000 mm | Cut-to-length (sawing) by agreement; define tolerance if critical. |
Shape | Round / Square / Flat / Hex | Forged / hot-rolled / cold-drawn per size requirement. |
Surface finish | Black / Peeled / Ground / Polished | Surface machining available for tight tolerance. |
End | Saw-cut / Facing / Chamfer | End prep available for machining and assembly. |
Straightness / tolerance | Per ASTM/EN or as agreed | Define straightness for long shafts and precision parts. |
Delivery condition | Solution annealed (standard) | Annealed & pickled/bright depending on size/finish. |
Dimension definition: DIA × LENGTH.
• Excellent resistance to pitting and crevice corrosion in chloride media
• Outstanding resistance to chloride stress corrosion cracking (SCC)
• Strong resistance to oxidizing and reducing acids in mixed process media
• Withstands wet chlorine gas, hypochlorite, and chlorine dioxide solutions
• High chromium content improves resistance to oxidizing media; suitable for use in the as-welded condition
• Good fabrication and welding performance for CPI equipment
Element | Ni | Cr | Mo | Fe | W | Mn | Si | C |
INCONEL 660 | Balance | 20.0–22.5 | 12.5–14.5 | 2.0–6.0 | 2.5–3.5 | ≤0.50 | ≤0.08 | ≤0.015 |
Extremely low carbon and silicon help maintain corrosion resistance in as-welded structures.
Property | Value |
Tensile Strength (Rm) | ≥ ≥ 930 MPa |
Yield Strength (Rp0.2) | ≥ ≥ 635 MPa |
Elongation | ≥ ≥ 12 % |
Hardness | ≤ 93 HRB |
Mechanical properties may vary slightly with product form and heat treatment condition.
Standard System | Specification |
ASTM / ASME | ASTM B574 / ASME SB-574 |
EN | EN 10204 |
UNS | N06022 |
DIN | 1.4980 |
JIS | NW 6022 |
Item | Range |
Diameter | 6 – 450 mm |
Length | Up to 6000 mm |
Shape | Round / Square / Flat / Hex |
Surface Finish | Black / Peeled / Ground / Polished |
End | Saw-cut / Facing / Chamfer |
Custom sizes, tight tolerances, and cut-to-length service are available upon request.
• Solution Annealed & Aged
• Turbine blades, discs and fasteners operating up to 700°C
• Jet engine components and exhaust systems
• High-temperature springs, bolts and shafts
• Gas turbines and steam turbine components
• Fasteners for high temperature service in automotive and marine engines
• Heat-resistant components in chemical and petrochemical plants
• Cryogenic structural applications requiring good strength and toughness
INCONEL 660 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-3 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 (INCONEL 660)
• Diameter × Length
• Quantity
• Surface finish / delivery condition
• Application environment
Our technical team will respond with datasheets, pricing, and delivery schedule promptly.
