Product Description
Technical Identifiers and Standards
| Field | Nimonic 75 | Nimonic 80A | Nimonic 90 |
| Common Alloy Names | Nimonic 75, Alloy 75 | Nimonic 80A, Nimonic 80, Alloy 80A | Nimonic 90, Alloy 90 |
| UNS Number | N06075 | N07080 | N07090 |
| Werkstoff Number | 2.4951 / 2.4630 | 2.4952 / 2.4631 | 2.4632 / 2.4969 |
| EN Short Designation | NiCr20Ti | NiCr20TiAl | NiCr20Co18TiAl |
| Aerospace Specifications | BS HR 5, BS HR 203 | BS HR 1, BS HR 601, AMS 5743 | BS HR 2, BS HR 501, AMS 5829 |
| Alloy Family | Solid-Solution Nickel-Chromium | Gamma-Prime Hardened Nickel-Chromium | Gamma-Prime Hardened Nickel-Chromium-Co |
Scrap Classification and Value Drivers
-
Cobalt Content Value Spikes: Nimonic 90 commands a higher value than Nimonic 75 or 80A due to its 15.00 to 21.00 percent Cobalt addition combined with a high Nickel base.
-
Gamma-Prime Hardening Elements: Nimonic 80A and Nimonic 90 contain significant Titanium (up to 3.00 percent) and Aluminum (up to 2.00 percent), requiring vacuum melting (VIM) to prevent slag formation during secondary refining.
-
Coating Removal Requirements: Retired turbine blades, guide vanes, and exhaust components may feature aluminide bond coatings, thermal barrier coatings (TBC), or heavy oxidation scale that must be cleaned prior to vacuum re-melting.
-
Strict Grade Segregation: Must be kept completely isolated from each other and from other high-temperature alloys like Waspaloy, Nimonic 105, Nimonic 263, Inconel 718, and Ren 41.
-
Magnetic Response: Completely non-magnetic in all standard conditions.
-
Cleanliness Requirements: Free from oil, grease, thermal coatings, ceramic furnace residues, carbon steel attachments, and low-melting metals (such as lead, zinc, or tin).
Exceptional High-Temperature PerformanceNimonic 75, 80, and 90 scraps are prized for their stability in fiercely hot environments, attributed to their robust nickel-chromium composition. This makes them the material of choice for recycling into parts exposed to thermal stress, such as furnace linings and aerospace components.
Versatile Scrap Shapes and PackagingChoose from bars, rods, or pieces delivered loose, on wooden pallets, or customized to your specifications. The metallic grey material, though previously used, retains significant strength and corrosion resistance, providing reliable raw material for alloy remelting and industrial reuse.
FAQ's of Nimonic 75 Scrap / Nimonic 80 Scrap / Nimonic 90 Scrap:
Q: How can Nimonic scrap be reused in various industries?
A: Nimonic 75, 80, or 90 scrap is typically recycled through alloy remelting, where it is processed into new high-temperature components for aerospace, industrial furnaces, and other sectors demanding thermal stability and corrosion resistance.
Q: What are the primary benefits of using Nimonic scrap?
A: Utilizing Nimonic scrap helps lower raw material costs while offering excellent mechanical properties, such as high tensile strength and resistance to oxidation-especially critical in high-heat applications.
Q: When should industries consider sourcing Nimonic scrap?
A: Industries should opt for Nimonic scrap when they require cost-effective, high-nickel alloys for remelting or recycling, particularly for producing components that face continuous high temperatures and corrosive environments.
Q: Where can I source Nimonic scrap in India?
A: Nimonic 75, 80, and 90 scrap are supplied by various Indian sources, including manufacturers, dealers, exporters, retailers, traders, and fabricators, either directly or through metal scrap marketplaces.
Q: What is the process involved in repurposing Nimonic scrap?
A: The scrap undergoes sorting, cleaning, and melting-often conforming to ASTM, BS, or DIN standards-before being reformed into new alloy bars, rods, or custom shapes suitable for advanced engineering uses.
Q: What surface condition can I expect from Nimonic scrap?
A: Nimonic scrap is delivered in a bare, metallic grey state and may display previous use or minor surface imperfections. Despite this, it retains excellent structural qualities and high corrosion resistance.