Table of Contents
- Inconel 330 / 660 Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of Inconel 330 / 660 Round Bars
- Key Advantages of UNS N08330 / UNS S66286 Round Bars
- Key Applications of Inconel 330 / 660 Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Inconel 330 / 660 Round Bars Supplier & Exporter
For high-temperature thermal processing and aerospace fasteners, Aurum Overseas provides precision bars built for extreme conditions. As a premier Inconel 330 Round Bars Supplier and Inconel 330 Round Bars Exporter, we offer heat-resistant alloy bars that resist carbon absorption and thermal shock up to 1150°C.
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To meet high-strength demands, we act as a leading Inconel 660 Round Bars Supplier and Inconel 660 Round Bars Exporter. Alloy 660 (A286) is an iron-base precipitation-hardenable superalloy delivering top yield strength and oxidation resistance up to 700°C.
We export these specialized high-temperature alloy bars across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Technical Specifications
| Technical Parameter | Inconel 330 | Inconel 660 / A286 |
|---|---|---|
| Material Designation | RA330 / Alloy 330 | A286 / Alloy 660 |
| UNS Number | UNS N08330 | UNS S66286 |
| Manufacturing Standards | ASTM B511, ASTM A276 Bars, ASTM A479 Bars, AMS 5716 | ASTM A638, ASTM A276 Bars, ASTM A479 Bars, AMS 5731, AMS 5737 |
| Diameter Capability | 3 mm to 500 mm (1/8" to 20" NB) | 3 mm to 500 mm (1/8" to 20" NB) |
| Length Specifications | 3 Meters, 6 Meters, Cut-to-Length | 3 Meters, 6 Meters, Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, DIN 1013 | ISO h8, h9, h10, h11, DIN 1013 |
Mechanical Properties & Chemical Composition
Equivalent Grades of Inconel 330 / 660 Round Bars
| Alloy Grade | Werkstoff Nr. | UNS | EN Standard |
|---|---|---|---|
| Inconel 330 | 1.4886 | UNS N08330 | X12NiCrSi36-16 |
| Inconel 660 (A286) | 1.4980 | UNS S66286 | X6NiCrTiMoVB25-15-2 |
Chemical Composition of Inconel 330 / 660 Bars
| Element | Inconel 330 (%) | Inconel 660 / A286 (%) |
|---|---|---|
| Carbon (C) | 0.08 max | 0.08 max |
| Silicon (Si) | 0.75 – 1.50 | 0.10 max |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Phosphorus (P) | 0.030 max | 0.025 max |
| Sulfur (S) | 0.030 max | 0.025 max |
| Chromium (Cr) | 17.00 – 20.00 | 13.50 – 16.00 |
| Nickel (Ni) | 34.00 – 37.00 | 24.00 – 27.00 |
| Molybdenum (Mo) | — | 1.00 – 1.50 |
| Titanium (Ti) | — | 1.90 – 2.35 |
| Aluminum (Al) | — | 0.35 max |
| Vanadium (V) | — | 0.10 – 0.50 |
| Boron (B) | — | 0.003 – 0.010 |
| Iron (Fe) | Balance (approx. 43%) | Balance |
Mechanical Properties of Inconel 330 and 660 Bars
| Property | Inconel 330 | Inconel 660 / A286 |
|---|---|---|
| Ultimate Tensile Strength | 585 MPa (85,000 psi) min | 965 MPa (140,000 psi) min |
| Yield Strength (0.2% Offset) | 260 MPa (38,000 psi) min | 655 MPa (95,000 psi) min |
| Elongation (%) | 30% min | 15% min |
| Density | 7.96 g/cm³ (0.288 lb/in³) | 7.92 g/cm³ (0.286 lb/in³) |
| Melting Range | 1370°C – 1425°C | 1370°C – 1430°C |
Types of Inconel 330 / 660 Round Bars
Aurum Overseas processes high-grade UNS N08330 / UNS S66286 Round Bars into multiple finish conditions to suit precise manufacturing requirements.
Inconel Bright Bars
Inconel Forged Bars
Key Advantages of UNS N08330 / UNS S66286 Round Bars
Resists Carbon Damage (Alloy 330)
Built with high nickel and silicon, Inconel 330 stops carbon from soaking into the metal in high-heat furnaces, keeping the bars from becoming weak or brittle over time.
Handles Sudden Temperature Changes (Alloy 330)
Withstands extreme temperature jumps up to 1150°C without cracking, bending, or warping out of shape.
Super High Strength (Alloy 660)
Special heat treatments trigger added titanium and aluminum to harden the metal internally, boosting its overall strength to handle heavy loads.
Non-Magnetic & Dependable (Alloy 660)
Stays completely non-magnetic and maintains its strong shape through severe conditions, from freezing sub-zero temperatures up to 700°C.
Protects Against Chemical Breakdown
High levels of nickel and chromium stop harmful nitrogen gas from soaking into the metal during chemical and industrial heat processes.
Key Applications of Inconel 330 / 660 Round Bars
| Industry Sector | Primary Grade Used | Typical Components |
|---|---|---|
| Thermal Processing | Inconel 330 | Furnace retorts, hearth rails, conveyor chains, and burner fixtures |
| Aerospace & Defense | Inconel 660 (A286) | Jet engine turbine tailpipes, high-tensile fasteners, and lock-bolts |
| Gas Turbine Energy | Inconel 660 (A286) | Turbine rotors, shafting, exhaust flange bolting, and blade pins |
| Petrochemical Refineries | Inconel 330 | Flare tips, steam superheater supports, and cracking furnace components |
| Automotive Performance | Inconel 660 (A286) | Turbocharger fasteners, exhaust manifold studs, and valve stems |
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Quality Testing & Inspection
As a quality-focused Inconel 330 Round Bars Exporter and Inconel 660 Round Bars Exporter, Aurum Overseas subjects every production lot to strict testing protocols:
- Positive Material Identification (PMI): XRF testing verifies element content, ensuring correct silicon levels in Alloy 330 and precise titanium/molybdenum content in Alloy 660.
- Ultrasonic Testing (UT): ASTM A388 testing on heavy forged bars inspects internal sound structure and rules out sub-surface flaws.
- Mechanical & High-Temperature Tensile Testing: Room and high-temperature tensile, yield, elongation, and hardness testing confirm compliance with ASTM A276 Bars and ASTM A479 Bars standards.
- Microstructure & Grain Size Inspection: Metallographic evaluation checks grain refinement and ensures complete solution annealing or proper precipitation heat treatment.
Global Export Markets
As an established Inconel 330 / 660 Round Bars Exporter, Aurum Overseas supplies fully certified UNS N08330 / UNS S66286 Round Bars to global energy and thermal engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Inconel 330 is a non-hardenable alloy built for carburization and thermal shock resistance up to 1150°C, while Inconel 660 (A286) is a precipitation-hardenable superalloy engineered for high tensile strength up to 700°C.
ASTM A276 covers hot-rolled and cold-finished bars for general structural applications, whereas ASTM A479 specifies requirements for bars used in boilers, pressure vessels, and elevated-temperature service.
Yes. Inconel 660 achieves high strength via solution heat treatment followed by precipitation aging at approximately 720°C to form hardening gamma-prime precipitates.
Inconel 330 Bright Bars require rigid tooling, positive rake angles, moderate cutting speeds, and heavy coolant flow to manage work hardening during machining.
All exports include EN 10204 3.1 Mill Test Certificates detailing heat numbers, chemical composition, tensile/yield values, PMI results, and UT inspection clearance.
Contact Aurum Overseas
Aurum Overseas provides high-performance Inconel 330 / 660 Round Bars engineered to meet critical global project standards.
Contact our technical sales engineers for pricing, material test reports, or immediate quotes: