Table of Contents
- 1. Incoloy 330 / Inconel 660 Threaded Bars Overview
- 2. Technical Specifications
- 3. Chemical Composition & Mechanical Properties
- 4. Grade Distinction: Incoloy 330 vs Inconel 660 (A286)
- 5. Key Advantages
- 6. Quality Testing & Inspection
- 7. Global Export Markets
- 8. Frequently Asked Questions
- 9. Contact Aurum Overseas
Incoloy 330 / Inconel 660 Threaded Bars Overview
Aurum Overseas is a premier Incoloy 330 Threaded Bars Supplier and trusted Incoloy 330 Threaded Bars Exporter, offering high-temperature nickel-iron-chromium fasteners made to ASTM B511 standards. Our ready stock of UNS N08330 Threaded Rods holds strong and provides exceptional resistance to thermal shock, carburization, and cyclic oxidation up to 1150 °C (2100 °F).
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As a reliable Inconel 660 Threaded Bars Supplier and Exporter, we supply precipitation-hardenable UNS S66286 Threaded Rods manufactured to ASTM A638 specifications. These high-strength Alloy 660 / A286 Threaded Bars deliver superior yield strength and creep-rupture performance for high-stress bolting in gas turbines and jet engine exhausts.
Engineered for industrial heat-treat furnaces, gas turbine flanges, and aerospace exhaust systems, our full-thread studs keep joints tight and secure. Contact Aurum Overseas for quick factory quotes, custom length cutting, and fast global shipping.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B511, ASME SB511 (Incoloy 330) / ASTM A638, AMS 5731, AMS 5732, AMS 5737 (Inconel 660) |
| UNS Designations | UNS N08330 (Incoloy 330) / UNS S66286 (Inconel 660 / A286) |
| Thread Size Range | M6 to M100 (1/4" to 4.0" Nominal Diameter) |
| Thread Profiles | UNC, UNF, UNEF, Metric Coarse, Metric Fine, Acme Threads |
| Length Options | 1,000 mm, 2,000 mm, 3,000 mm, Custom Cut-to-Length All-Thread Studs |
| Thread Class / Fit | Class 2A / 3A (Imperial) & 6g / 6h (Metric Profile Tolerances) |
| HSN Code | 75089090 / 73181500 |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Grade | Standard | W.Nr. | UNS |
|---|---|---|---|
| Incoloy 330 | ASTM B511 | 1.4886 | N08330 |
| Inconel 660 (A286) | ASTM A638 | 1.4980 | S66286 |
Chemical Composition (%)
| Chemical Element | Incoloy 330 (UNS N08330) | Inconel 660 / A286 (UNS S66286) |
|---|---|---|
| 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 |
| Titanium (Ti) | — | 1.90 – 2.35 |
| Aluminum (Al) | — | 0.35 max |
| Vanadium (V) | — | 0.10 – 0.50 |
| Boron (B) | — | 0.003 – 0.010 |
| Carbon (C) | 0.08 max | 0.08 max |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Copper (Cu) | 1.00 max | — |
Mechanical Properties
| Property Parameter | Incoloy 330 | Inconel 660 / A286 |
|---|---|---|
| Tensile Strength (Min) | 580 MPa (85,000 Psi) | 930 MPa (135,000 Psi) |
| Yield Strength (0.2% Offset, Min) | 240 MPa (35,000 Psi) | 650 MPa (95,000 Psi) |
| Elongation (Min) | 30 % | 15 % |
Grade Distinction: Incoloy 330 vs Inconel 660 (A286)
| Technical Feature | Incoloy 330 | Inconel 660 / A286 |
|---|---|---|
| Max Temperature | Up to 1150 °C (2100 °F) | Up to 700 °C (1300 °F) |
| Primary Strength Mechanism | Solid-solution hardened with high Silicon (0.75–1.50%) | Precipitation-hardened (Age hardened) via Titanium/Aluminum |
| Key Mechanical Advantage | Resists thermal shock and cyclic heating/cooling cracking | High tensile and yield strength for extreme high-torque bolting |
| Commercial Buyer Choice | Best for heat-treat furnace fixtures & quench muffles | Essential spec for gas turbine flanges, manifolds & aerospace studs |
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Key Advantages
High-Temperature Carburization Resistance
High Nickel and Silicon prevent carbon absorption and metal dusting in furnace atmospheres.
High Fastener Yield Strength
Age-hardened Alloy 660 delivers over 650 MPa yield strength for heavy mechanical clamping loads.
Thermal Shock Immunity
Incoloy 330 withstands rapid heating and liquid quenching cycles without cracking or warping.
Smooth & Secure Threading
Precision roll-threaded construction prevents thread stripping and jamming under thermal expansion.
Quality Testing & Inspection
Aurum Overseas subjects every order to strict quality control processes to ensure compliance with international fastener standards and client specifications:
- Chemical Heat Verification (PMI): Spectro / XRF material analysis verifying exact elemental chemistry against ASTM standards.
- Thread Pitch & Gage Inspection: Go/No-Go thread gage and optical comparator testing ensuring class 2A/3A and 6g pitch tolerances.
- Mechanical Property Certification: Factory batch verification of tensile, yield strength, and elongation supported by EN 10204 3.1 MTRs.
- Optional Third-Party Testing: Ultrasonic (UT), Dye Penetrant (DPI), or Proof Load testing provided upon client project request.
Global Export Markets
As an established Incoloy 330 & Inconel 660 Threaded Bars Exporter, Aurum Overseas supplies fully certified ASTM B511 UNS N08330 and ASTM A638 UNS S66286 threaded rods to global chemical processing, nuclear, furnace, and high-temperature industrial facilities:
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, solid-solution alloy built for extreme heat (up to 1150 °C) and thermal cycling. Inconel 660 (A286) is an age-hardenable alloy optimized for high mechanical strength and torque loads up to 700 °C.
Yes. Inconel 660 and A286 refer to the same precipitation-hardening iron-nickel-chromium alloy standardized under UNS S66286.
Yes. Alloy 330 contains high Silicon (0.75–1.50%) and Nickel (34–37%), making it highly resistant to cracking during rapid liquid quenching cycles in heat-treatment furnaces.
We offer metric coarse/fine (6g fit) and imperial UNC, UNF, UNEF, and Acme profiles (class 2A/3A) in custom cut lengths.
Contact Aurum Overseas
Contact Aurum Overseas, a trusted Incoloy 330 & Inconel 660 Threaded Bars Supplier & Exporter, for certified high-temperature alloy threaded rods, custom length sawing, and fast international delivery.