Udimet 700 Scrap Buyer, Importer and Exporter in India
Udimet 700 is one of the higher-aluminium wrought superalloys, and its scrap is wanted by melters who can use that aluminium and titanium. Mipra Steel buys and sells it as its own grade rather than as mixed disc scrap.
Sell Udimet 700 Scrap
Send the form, weight and location, with photographs and any part, forging or heat numbers. An OES reading showing about 4.4% aluminium is the strongest single piece of evidence. We review incoming enquiries and respond with relevant next steps.
Buy Udimet 700 Scrap
Melters can tell us whether they will accept Udimet 700 and Astroloy as one charge or need them apart, the quantity, accepted forms and destination.
What Is Udimet 700 Scrap?
Udimet 700 belongs to the generation of wrought superalloys that pushed aluminium and titanium higher to get more gamma prime and more strength at temperature. With roughly 4.4% aluminium and 3.5% titanium it carries noticeably more hardener than Waspaloy (1.4% aluminium, 3% titanium) or Udimet 500. Chromium is lower, at about 15%, and molybdenum about 5%. It has been used for gas turbine blades, discs and other hot, highly stressed parts.
The alloy most often mentioned alongside it is Astroloy. The published nominal analyses are very close: the TMS wrought superalloy table lists Udimet 700 at 15 Cr, 18.5 Co, 5 Mo, 3.5 Ti, 4.4 Al and 0.07 C, and Astroloy at 15 Cr, 17 Co, 5 Mo, 3.5 Ti, 4.0 Al and 0.04 C. Published cobalt for Udimet 700 varies by source; NASA studies refer to a standard 17% cobalt content. In scrap terms the two are near neighbours that a melter may or may not accept together, so the lot should say which one it is.
Udimet 700 scrap is usually forging, ring and disc material from older engine programmes and spares, plus machining chips. Volumes are modest and the value of a lot depends heavily on proving the grade.
Udimet 700 is one of the Udimet alloys listed on this site.
Where Udimet 700 Scrap Comes From
Most Udimet 700 scrap is legacy rotating-part material.
Disc and Ring Forging
Flash, crops, test pieces and rejected forgings.
Machining
Turnings and chips from finishing discs and rings.
Overhaul and Spares
Retired discs, blades and surplus spares from older engine and turbine programmes.
Udimet 700 Chemical Composition
Nominal values in weight per cent from the TMS Compositions of Typical Wrought Superalloys table (source given there as C-M Group), with Astroloy for comparison (source given as Allvac).
| Element | Udimet 700 nominal wt% | Astroloy nominal wt% |
|---|---|---|
| Nickel | Balance | Balance |
| Chromium | 15 | 15 |
| Cobalt | 18.5 (17 in some sources) | 17 |
| Molybdenum | 5 | 5 |
| Aluminium | 4.4 | 4.0 |
| Titanium | 3.5 | 3.5 |
| Carbon | 0.07 | 0.04 |
| Boron | 0.025 | 0.025 |
Udimet 700 Applications
- Gas turbine discs and rings
- Gas turbine blades
- Other highly stressed hot-section parts
How Udimet 700 Scrap Is Identified
| Check | What it shows |
|---|---|
| Aluminium about 4 to 4.4% | Needs OES; marks Udimet 700 or Astroloy against lower-aluminium wrought grades. |
| Chromium about 15% | Lower than Waspaloy, Udimet 500 and Udimet 520. |
| Molybdenum about 5% | Higher than Udimet 720 (about 3%). |
| No tungsten | Separates it from Udimet 520 and 720. |
| Carbon by combustion | A lab figure can help separate Udimet 700 (about 0.07%) from Astroloy (about 0.04%), but records are more reliable. |
Grades Most Often Confused with Udimet 700
- Astroloy: almost the same nominal chemistry; slightly lower cobalt, aluminium and carbon.
- Udimet 720: more titanium (about 5%), tungsten present, less molybdenum.
- Udimet 500: similar cobalt, much less aluminium.
Preparing Udimet 700 Scrap for Sale
- Keep records that say Udimet 700 or Astroloy; the two are hard to separate by reading alone.
- Separate solids from turnings and keep turnings dry.
- Keep away from Inconel 718 and other disc alloys.
Udimet 700 Scrap Price per Kg: What Decides It
- Nickel and cobalt content.
- Molybdenum credit.
- Proof of grade, including whether the lot is Udimet 700 or Astroloy.
- Form and cleanliness.
- Lot size.
Udimet 700 Scrap Import and Export
Imports into India are declared under 7503.00 as nickel superalloy scrap with the grade named. Exports are packed by grade and form. Guides: importing, export documents. Lots leaving India go through our nickel alloy scrap exporter desk.
Related Reading
Udimet 700 FAQ
Is Udimet 700 the same as Astroloy?
They are very close but not identical. Published nominal analyses give Udimet 700 slightly more cobalt, aluminium and carbon than Astroloy. A melter may accept them together or ask for them apart, so lots should name the alloy.
What makes Udimet 700 different from Waspaloy?
Much more aluminium (about 4.4% against 1.4%), less chromium (about 15% against 19.5%) and more cobalt. That gives Udimet 700 a higher gamma prime content.
Can XRF identify Udimet 700?
XRF reads chromium, cobalt, molybdenum and titanium, but the deciding aluminium content needs OES or a lab.
Which HS code applies to Udimet 700 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.
- TMS, Compositions of Typical Wrought Superalloys table: Udimet 700 (C-M Group) and Astroloy (Allvac) nominal values.
- NASA Technical Reports Server: studies on cobalt in Udimet 700 referring to the standard 17% cobalt content (via science.gov topic index).
Reviewed by Mitesh Shah, Proprietor, Mipra Steel · Published by Mipra Steel, Khetwadi, Mumbai · Last updated