Udimet 520 Scrap Buyer, Importer and Exporter in India
Udimet 520 lots are not common, which is exactly why they get lost: a few hundred kilos of blades or bar ends end up in a general superalloy heap. Mipra Steel buys them as Udimet 520 so the molybdenum and cobalt are counted.
Sell Udimet 520 Scrap
Describe the material (blades, bar ends, forgings, turnings), give the weight and location, and send photos. A reading that shows tungsten near 1% and molybdenum above 5.5% is the fastest proof of grade. We review incoming enquiries and respond with relevant next steps.
Buy Udimet 520 Scrap
Superalloy melters can tell us the quantity, the forms they accept, their iron and niobium limits and the receiving port. Lots are described as Udimet 520, UNS N07520.
What Is Udimet 520 Scrap?
Udimet 520 is a precipitation-hardenable nickel superalloy that Special Metals describes as a blading alloy for aircraft and land-based gas turbines, intended for the 760 to 927°C range. It combines solid-solution strengthening from molybdenum and tungsten with gamma prime formed by titanium and aluminium, and it was designed to be forgeable and structurally stable over long service.
Its chemistry is a halfway house between its neighbours. It has less cobalt than Udimet 500 (11 to 14% against about 18.5%) and more molybdenum (5.5 to 7% against about 4%), plus a deliberate tungsten addition of about 1% that neither Udimet 500 nor Waspaloy carries. That tungsten is the easiest single marker on a handheld XRF.
Scrap arises from blade forging and machining, from bar and forging stock offcuts, and from engines when blades are replaced. Because the grade is used in modest quantities, honest identification matters more than volume: a correctly described lot finds a melter who wants it.
Udimet 520 belongs to the Udimet alloys, part of the wider superalloy family.
Where Udimet 520 Scrap Comes From
Udimet 520 scrap follows the blade supply chain.
Blade Forging and Machining
Forging flash, rejected blanks and machining chips from compressor and turbine blade makers.
Bar and Forging Stock
Bar ends and offcuts from stockists and forging shops.
Engine and Turbine Overhaul
Blades replaced at overhaul of aero and land-based turbines.
Udimet 520 Scrap Specification Chart
| Grade | Udimet 520 |
|---|---|
| UNS | N07520 |
| Also known as | U-520, Alloy 520 |
| Alloy type | Precipitation-hardened (γ′) nickel superalloy |
| Density | 8.21 g/cm³ (0.297 lb/in³) |
| Intended service range | 760 to 927°C (1400 to 1700°F) |
| HS code (customs heading) | 7503.00 (nickel waste and scrap) |
Udimet 520 Chemical Composition
Composition ranges in weight per cent from Special Metals product data, as reproduced by Total Materia and AZoM. The chart uses the middle of each range.
| Element | Symbol | Limits wt% |
|---|---|---|
| Nickel | Ni | Balance |
| Chromium | Cr | 18.0 to 20.0 |
| Cobalt | Co | 11.0 to 14.0 |
| Molybdenum | Mo | 5.50 to 7.00 |
| Titanium | Ti | 2.90 to 3.25 |
| Aluminium | Al | 1.80 to 2.30 |
| Tungsten | W | 0.80 to 1.20 |
| Carbon | C | 0.02 to 0.06 |
| Boron | B | 0.004 to 0.010 |
Udimet 520 Applications
- Blading for aircraft gas turbines
- Blading for land-based gas turbines
- Other hot-section parts working between 760 and 927°C
How Udimet 520 Scrap Is Identified
| Check | What it shows |
|---|---|
| Tungsten about 1% | The quickest marker; Udimet 500 and Waspaloy have none. |
| Molybdenum 5.5 to 7% | Higher than Udimet 500 (about 4%) and Waspaloy (about 4.3%). |
| Cobalt 11 to 14% | Lower than Udimet 500 and Udimet 700. |
| Aluminium about 2% | Needs OES to confirm; separates it from Udimet 700 (about 4.4%). |
Grades Most Often Confused with Udimet 520
- Udimet 500: more cobalt, less molybdenum, no tungsten.
- Waspaloy: similar cobalt, less molybdenum, no tungsten, less aluminium.
- Udimet 720: also carries tungsten, but about 5% titanium and only 3% molybdenum.
Preparing Udimet 520 Scrap for Sale
- Keep Udimet 520 separate from other blade and disc alloys at the machine.
- Separate blades, bar ends and turnings into their own lots.
- Remove coatings or note them; strip fixtures of other alloys.
- Keep forging and heat numbers with the lot.
Udimet 520 Scrap Price per Kg: What Decides It
- Nickel and cobalt content.
- Molybdenum (up to 7%) and tungsten credits.
- Grade certainty and records.
- Form, cleanliness and coatings.
- Lot size and location.
Udimet 520 Scrap Import and Export
Lots imported into India are declared under 7503.00 as Udimet 520 nickel superalloy scrap, N07520, with readings. For export, blades and solids are packed by form with a packing list. See importing and export documents. Lots leaving India go through our nickel alloy scrap exporter desk.
Related Reading
Udimet 520 FAQ
What is Udimet 520 used for?
Special Metals describes Udimet 520 as a blading alloy for aircraft and land-based gas turbines, for service between about 760 and 927°C.
What is the UNS number of Udimet 520?
UNS N07520.
How is Udimet 520 different from Udimet 500?
Udimet 520 carries less cobalt (11 to 14% against about 18.5%), more molybdenum (5.5 to 7% against about 4%) and about 1% tungsten, which Udimet 500 does not contain.
Can XRF identify Udimet 520?
XRF reads its tungsten, molybdenum and cobalt, which usually separates it from Udimet 500 and Waspaloy. Aluminium and boron need OES or a lab.
Which HS code applies to Udimet 520 scrap?
Heading 7503.00, nickel waste and scrap.
Sources and Review
Figures are quoted as published in these sources; any value we could not confirm has been left out.
- Special Metals UDIMET alloy 520 product data, as reproduced by AZoM (composition ranges, density) and Total Materia (UNS N07520, partial ranges).
- UL Prospector, UDIMET alloy 520: description and intended applications.
- Udimet 500 and Waspaloy values as listed on this site.
Reviewed by Mitesh Shah, Proprietor, Mipra Steel · Published by Mipra Steel, Khetwadi, Mumbai · Last updated