Table of Contents
- Incoloy 330 / Inconel 660 Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of UNS N08330 / UNS S66286 Hex Bars
- Key Advantages of Incoloy 330 & Inconel 660 Hex Bars
- Key Applications of Incoloy 330 & Inconel 660 Hex Bars
- Quality Assurance & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Incoloy 330 / Inconel 660 Overview
Aurum Overseas is a premier Incoloy 330 Hex Bars Supplier and Inconel 660 Hex Bars Supplier offering high-performance hexagon bars for thermal and high-stress applications. Our UNS N08330 / UNS S66286 Hex Bars provide superior performance, with Incoloy 330 resisting carburization and Inconel 660 utilizing precipitation hardening for high yield strength.
-hex-bar.webp "Incoloy 330 / Inconel 660 (UNS N08330 / UNS S66286) Solid Hexagon Bars")
As a trusted Incoloy 330 Hex Bars Exporter and Inconel 660 Hex Bars Exporter, we supply precision Incoloy 330 Bright Hex Bars and Inconel 660 Bright Hex Bars for fastener machining alongside heavy Incoloy 330 Forged Hex Bars and Inconel 660 Forged Hex Bars for load-bearing fittings. Every order features certified stock, EN 10204 3.1 mill test reports, and custom cut-to-length sawing.
We deliver certified austenitic hex bar stock to heat-treating facilities, aerospace manufacturers, power generation plants, and oil & gas operations across the USA, Germany, UK, UAE, Saudi Arabia, and global markets.
Technical Specifications
| Technical Parameter | Incoloy 330 | Inconel 660 / Alloy A286 |
|---|---|---|
| Material Specifications | ASTM B511, ASME SB511 | ASTM A638, ASME SA638, AMS 5731, AMS 5732, AMS 5737 |
| Across-Flats (AF) Size Range | 6.0 mm to 100.0 mm (1/4" to 4" Hexagon) | 6.0 mm to 100.0 mm (1/4" to 4" Hexagon) |
| Length Options | 1,000 mm to 6,000 mm, Precision Sawing Cut-to-Length | 1,000 mm to 6,000 mm, Precision Sawing Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged |
| Heat Treatment Condition | Solution Annealed | Solution Treated + Age Hardened (Precipitation Hardened) |
| Dimensional Tolerances | ASTM B511 / ISO 286-2 (h9, h10, h11 hex tolerances) | ASTM A638 / ISO 286-2 (h9, h10, h11 hex tolerances) |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard / Grade | Werkstoff Nr. | UNS Designation | AISI / SAE | EN Symbol |
|---|---|---|---|---|
| Incoloy 330 | 1.4886 | N08330 | 330 | - |
| Inconel 660 (Alloy A286) | 1.4980 | S66286 | 660 | X6NiCrTiMoVB25-15-2 |
Chemical Composition (%)
| Element | Incoloy 330 | Inconel 660 / Alloy A286 |
|---|---|---|
| Nickel (Ni) | 34.00 – 37.00 | 24.00 – 27.00 |
| Chromium (Cr) | 17.00 – 20.00 | 13.50 – 16.00 |
| Iron (Fe) | Balance | Balance |
| Silicon (Si) | 0.75 – 1.50 | 1.00 max |
| Molybdenum (Mo) | 1.00 – 1.75 | 1.00 – 1.50 |
| Copper (Cu) | 1.00 max | 0.30 max |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Carbon (C) | 0.08 max | 0.08 max |
| Sulfur (S) | 0.03 max | 0.025 max |
| Phosphorus (P) | 0.03 max | 0.025 max |
| Titanium (Ti) | - | 1.90 – 2.35 |
| Aluminum (Al) | - | 0.35 max |
| Vanadium (V) | - | 0.10 – 0.50 |
| Boron (B) | - | 0.003 – 0.010 |
Mechanical & Physical Properties
| Property Parameter | Incoloy 330 (UNS N08330) | Inconel 660 / Alloy A286 (UNS S66286) |
|---|---|---|
| Density | 8.03 g/cm³ (0.290 lb/in³) | 7.95 g/cm³ (0.287 lb/in³) |
| Melting Point | 1370 – 1430 °C (2500 – 2600 °F) | 1370 – 1430 °C (2500 – 2600 °F) |
| Tensile Strength (Min) | 580 MPa (84,000 Psi) | 620 MPa (90,000 Psi) |
| Yield Strength (0.2% Offset, Min) | 240 MPa (35,000 Psi) | 275 MPa (40,000 Psi) |
| Elongation (Min) | 30 % | 40 % |
Types of UNS N08330 / UNS S66286 Hex Bars
Aurum Overseas supplies Incoloy 330 and Inconel 660 (Alloy A286) hex bars in precision bright and heavy forged conditions for thermal and high-stress applications.
Inconel 330/660 Bright Hex Bars
Inconel 330/660 Forged Hex Bars
Key Advantages of Incoloy 330 & Inconel 660 Hex Bars
Carburization & Nitriding Immunity
Incoloy 330 features 34–37% nickel and 0.75–1.50% silicon, creating a protective barrier that resists carbon enrichment and thermal shock during rapid quenching.
Precipitation-Hardened High Strength
Alloy A286 Hex Bars utilize titanium, vanadium, and boron additions to form gamma-prime phase strengthening, maintaining high tensile properties up to 700 °C.
Thermal Cycling Stability
Resists cyclic oxidation scaling and thermal fatigue, preventing surface cracking under alternating heating and cooling operations.
Machinable Hexagonal Geometry
Precision across-flats tolerances allow efficient machining into high-temperature fasteners, turbine bolts, and structural pins.
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Key Applications of Incoloy 330 & Inconel 660 Hex Bars
| Industry | Applications | Key Alloy & Benefit |
|---|---|---|
| Heat Treating & Furnace Hardware | Retort tie rods, conveyor drive shafts, burner nozzles, furnace bolts | Incoloy 330: High silicon and nickel content prevents carbon penetration in carburizing atmospheres. |
| Aerospace & Gas Turbines | Afterburner fasteners, turbine rotor bolts, exhaust manifold studs | Inconel 660 (A286): Age-hardened matrix delivers high creep-rupture strength under extreme mechanical loads. |
| Oil & Gas / Offshore | Non-magnetic wellhead fasteners, high-stress manifold bolts | Alloy A286 Hex Bars: Excellent yield strength and corrosion resistance in sour gas environments. |
| Chemical Processing | Thermal oxidizer fittings, nitric acid system hex plugs, heater elements | Incoloy 330: Resists thermal shock, oxidation, and cyclic thermal degradation. |
Quality Assurance & Inspection
As a certified Incoloy 330 Hex Bars Exporter and Inconel 660 Hex Bars Exporter, every order undergoes comprehensive quality verification prior to dispatch:
- Spectro Chemical Analysis: Positive Material Identification (PMI) confirming exact Ni, Cr, Fe, Si, Mo, Ti, and V proportions.
- Hardness & Mechanical Testing: Room and elevated-temperature tensile testing and Brinell/Rockwell hardness verification per ASTM B511 and ASTM A638.
- Microstructure Examination: Grain size and phase distribution analysis ensuring optimal solution-annealed or age-hardened matrix structures.
- Ultrasonic Volumetric Testing: NDT inspection per ASTM A388 on forged hex bars.
Global Export Markets
As an established Incoloy 330 & Inconel 660 Hex Bars Exporter, Aurum Overseas supplies fully certified UNS N08330 and UNS S66286 Hex Bars to global heat-treating, aerospace, and energy centers:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Incoloy 330 is an austenitic alloy optimized for carburization and thermal shock resistance in furnaces up to 1150 °C. Inconel 660 (Alloy A286) is an age-hardenable superalloy designed for high yield strength and creep resistance up to 700 °C in turbine and aerospace applications.
Yes, Inconel 660, Alloy A286, and UNS S66286 refer to the same iron-nickel-chromium precipitation-hardening superalloy specification.
Hex bars feature flat across-flats surfaces that allow easy wrenching and precision thread machining for high-temperature bolts, tie rods, and structural couplings.
Incoloy 330 hex bars are manufactured per ASTM B511, while Inconel 660 hex bars comply with ASTM A638 and AMS 5731/5732/5737 standards.
Every dispatch from Aurum Overseas includes full EN 10204 3.1 Mill Test Certificates detailing heat numbers, chemical composition, heat treatment condition, and mechanical test results.
Contact Aurum Overseas
Partner with a trusted Incoloy 330 Hex Bars Supplier, Incoloy 330 Hex Bars Exporter, Inconel 660 Hex Bars Supplier, and Inconel 660 Hex Bars Exporter for certified stock, custom sawing, and reliable global delivery.