Table of Contents
- Incoloy 330 & Inconel 660 Square Bars Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Bar Profile Types & Finishes
- Incoloy 330 vs. Inconel 660 (A286)
- Key Advantages
- Key Applications
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Incoloy 330 & Inconel 660 Square Bars Overview
Aurum Overseas is a leading Incoloy 330 Square Bar Supplier stocking high-temperature nickel-iron-chromium alloys engineered for extreme thermal and mechanical environments. Our square stock inventory includes solid bar profiles designed for industrial heating equipment, thermal processing, and high-stress aerospace fasteners.
As a certified Incoloy 330 Square Bar Exporter, we supply both cold-drawn bright profiles for CNC machining and heavy hot-forged billets for structural load-bearing frames. Every shipment includes complete mill test traceability, precise dimensional execution, and custom cut-to-length capabilities.
As a trusted Inconel 660 Square Bar Supplier and global Inconel 660 Square Bar Exporter, we distribute UNS N08330 / UNS S66286 Square Bars to client facilities across the USA, Canada, Mexico, Germany, United Kingdom, France, Italy, Netherlands, Belgium, Spain, Poland, UAE, Saudi Arabia, Qatar, Kuwait, Oman, and Bahrain.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Material Specifications | ASTM B511, ASME SB511 (330) / ASTM A638, AMS 5731, AMS 5732, AMS 5737 (660 / A286) |
| UNS Designations | UNS N08330 (Incoloy 330) / UNS S66286 (Inconel 660 / A286) |
| Werkstoff Numbers | W.Nr. 1.4886 (330) / W.Nr. 1.4980 (660 / A286) |
| Size Range (Square) | 6.0 mm x 6.0 mm to 250 mm x 250 mm (1/4" to 10" square profile) |
| Length Options | 1,000 mm to 6,000 mm, Precision Custom Cut-to-Length |
| Surface Finishes | Bright (Cold Drawn / Centerless Ground), Forged (Hot Forged / Rough Turned) |
| Heat Treatment | Solution Annealed (330) / Solution Treated & Precipitation Age Hardened (660) |
| Dimensional Tolerances | ASTM A484 / BS 970 / ISO h9, h10 square tolerances |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Grade Name | Werkstoff Nr. | UNS | EN Standard | AMS Specification |
|---|---|---|---|---|
| Incoloy 330 | 1.4886 | UNS N08330 | X12NiCrSi35-16 | AMS 5716 |
| Inconel 660 (A286) | 1.4980 | UNS S66286 | X6NiCrTiMoVB25-15-2 | AMS 5737 / AMS 5732 |
Chemical Composition (%)
| Element | Incoloy 330 | Inconel 660 / 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 |
| Carbon (C) | 0.08 max | 0.08 max |
| Silicon (Si) | 1.25 – 1.50 (Target 1.50) | 0.10 max (Up to 1.0 max) |
| Manganese (Mn) | 2.00 max | 2.00 max |
| Molybdenum (Mo) | 1.75 max | 1.00 – 1.50 |
| Titanium (Ti) | — | 1.90 – 2.35 |
| Aluminum (Al) | — | 0.35 max (Up to 1.35 max) |
| Vanadium (V) | — | 0.10 – 0.50 |
| Boron (B) | — | 0.003 – 0.010 |
| Phosphorus (P) | 0.030 max | 0.025 max |
| Sulfur (S) | 0.030 max | 0.025 max (Up to 0.35 max) |
| Copper (Cu) | 1.00 max | — |
Mechanical Properties
| Property Parameter | Incoloy 330 (Solution Annealed) | Inconel 660 / A286 (Aged Condition) |
|---|---|---|
| Density | 8.08 g/cm³ | 7.92 g/cm³ |
| Melting Point | 1345 °C – 1425 °C | 1370 °C – 1430 °C |
| Tensile Strength (Min) | 75,000 psi (520 MPa) | 145,000 psi (1000 MPa) |
| Yield Strength (0.2% Offset) | 30,000 psi (205 MPa) | 95,000 psi (655 MPa) |
| Elongation (Min) | 45% | 24% |
Bar Profile Types & Finishes
Aurum Overseas supplies Incoloy 330 and Inconel 660 (A286) square bars in precision bright and heavy forged conditions for high-temperature and high-stress industrial applications.
Incoloy 330 / 660 Bright Square Bars
Incoloy 330 / 660 Forged Square Bars
Incoloy 330 vs. Inconel 660 (A286)
| Comparison Feature | Incoloy 330 | Inconel 660 / A286 |
|---|---|---|
| Primary Alloy Type | Solid-solution iron-nickel-chromium alloy | Precipitation-hardenable superalloy |
| Max Operating Temp. | Up to 1200 °C (2200 °F) | Up to 700 °C (1300 °F) |
| Core Advantage | Resists thermal shock, cycling, and carburization | High tensile and yield strength (age-hardened) |
| Key Element Addition | 1.25 – 1.50% Silicon (blocks carbon absorption) | Titanium & Molybdenum (enables age-hardening) |
| Strength Mechanism | Retains ductility and toughness at extreme heat | Heat-treated to 95,000 psi yield strength |
| Best Buyer Choice For | Furnace parts, retorts, and heat-treating frames | High-stress aerospace bolts, turbine studs, and valves |
Key Advantages
No Heat Warping
Incoloy 330 handles rapid thermal cycling without cracking or scaling, saving you replacement costs.
Built for Heavy Loads
Inconel 660 undergoes age-hardening to reach 95,000 psi yield strength, ensuring safety under extreme pressure.
Longer Service Life
High-nickel alloy structure protects against severe furnace carbon exposure and hot gas degradation.
Extreme Cold Reliability
UNS S66286 retains high impact toughness and stability down to -196 °C for sub-zero applications.
Key Applications
| Industry Sector | Applied Alloy Grade | Primary Application Purpose |
|---|---|---|
| Heat Treating Equipment | Incoloy 330 | Retort structural supports, furnace hearth rails, quenching fixtures |
| Aerospace & Turbines | Inconel 660 (A286) | High-temperature turbine studs, jet engine manifold fasteners, exhaust bolts |
| Petrochemical Processing | Incoloy 330 | Radiant tube hangers, flare tip components, catalytic cracker parts |
| Oil & Gas / Subsea | Inconel 660 (A286) | Non-magnetic wellhead components, high-strength downhole bolting |
Quality Testing & Inspection
As a quality-driven Inconel 660 Square Bar Supplier, every order undergoes rigorous quality verification:
- Mill Test Certification: Full EN 10204 3.1 documentation outlining heat tracking, chemical composition, and heat-treatment condition.
- Mechanical Testing: Batch evaluation of tensile strength, yield strength, percentage elongation, and hardness levels.
- Ultrasonic Inspection: 100% non-destructive testing (NDT) according to ASTM A388 to ensure complete internal soundness in forged square profiles.
Global Export Markets
As an established Incoloy 330 & Inconel 660 Square Bar Exporter, Aurum Overseas supplies fully certified UNS N08330 and UNS S66286 Square 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
Incoloy 330 is built for extreme heat and furnace atmospheres up to 1200 °C. Inconel 660 (A286) is heat-treated for high mechanical strength and load-bearing up to 700 °C.
Silicon (~1.5%) enhances oxidation resistance and blocks carbon diffusion, preventing carburization in thermal processing atmospheres.
While A286 can be machined after age hardening, machining in the solution-annealed state yields better tool life, followed by final age hardening to achieve maximum hardness.
We stock both Bright Square Bars (cold drawn/ground) for precision machining and Forged Square Bars (hot forged/turned) for heavy structural applications.
Yes, as an experienced Incoloy 330 Square Bar Exporter, all deliveries include certified EN 10204 3.1 mill test certificates.
Contact Aurum Overseas
Aurum Overseas supplies certified Incoloy 330 (UNS N08330) and Inconel 660 (UNS S66286 / A286) square bars for thermal processing, aerospace, and energy applications.
Contact our sales department for stock availability, custom cutting services, or immediate pricing: