Inconel X-750 Scrap Buyer and Seller
X-750 looks like Inconel 600 to the eye and on a quick nickel-chromium reading. The titanium and niobium that make it age-hardenable are also what a melter pays for, so Mipra Steel lots it on its own.
Sell Inconel X-750 Scrap
Tell us the form (spring wire, bar, sheet, fasteners, forgings), weight, location and any certificates. A reading showing titanium near 2.5% and niobium near 1% confirms X-750. We review incoming enquiries and respond with relevant next steps.
Buy Inconel X-750 Scrap
Melters can state the quantity, accepted forms and limits on iron, copper and coatings.
What Is Inconel X-750?
Special Metals describes X-750 as a nickel-chromium alloy made precipitation-hardenable by additions of aluminium and titanium, which combine with nickel during heat treatment to form gamma prime, Ni3(Al,Ti). Niobium adds to the effect. Special Metals lists springs and fasteners for service from sub-zero temperatures up to about 650°C (1200°F).
The producer's list of uses explains where the scrap comes from: gas turbine rotor blades, wheels, bolts and structural members; rocket-engine thrust chambers; thrust reversers and hot-air ducting; large pressure vessels; heat-treating fixtures, forming tools and extrusion dies; and springs and fasteners. In the scrap trade, spring wire, bar ends and fastener stock are the commonest X-750 lots.
X-750 is listed with the Inconel alloys. Inconel is a trademark of Special Metals Corporation, used here only to identify material.
Inconel X-750 Chemical Composition
Limiting chemical composition in weight per cent from Special Metals publication SMC-067.
| Element | Symbol | wt% |
|---|---|---|
| Nickel (plus cobalt) | Ni | 70.00 min |
| Chromium | Cr | 14.0 to 17.0 |
| Iron | Fe | 5.0 to 9.0 |
| Titanium | Ti | 2.25 to 2.75 |
| Niobium (plus tantalum) | Nb | 0.70 to 1.20 |
| Aluminium | Al | 0.40 to 1.00 |
| Manganese | Mn | 1.00 max |
| Silicon | Si | 0.50 max |
| Copper | Cu | 0.50 max |
| Carbon | C | 0.08 max |
| Sulphur | S | 0.01 max |
| Cobalt | Co | 1.00 max |
| UNS | N07750 |
|---|---|
| W.Nr. | 2.4669 |
| Density | 8.28 g/cm³ (0.299 lb/in³) |
| Melting range | 1393 to 1427°C |
| Product forms | Sheet, strip, plate, round and flat bar, forging stock, hexagon, wire, tubing, extruded section |
How X-750 Scrap Is Identified
| Reading | Points to |
|---|---|
| Titanium about 2.5%, niobium about 1%, iron 5 to 9% | Inconel X-750 |
| Similar nickel and chromium, no titanium or niobium | Inconel 600 |
| Iron about 18%, niobium about 5%, molybdenum about 3% | Inconel 718 |
| Chromium about 19.5%, titanium about 2.25%, iron under 1% | Nimonic 80A |
X-750 Scrap Forms
| Form | Typical source |
|---|---|
| Spring wire and coils | Spring makers and maintenance |
| Bar ends and fastener stock | Bolt and fastener manufacture |
| Sheet and strip trim | Ducting and structural fabrication |
| Forgings and tooling | Rings, dies and heat-treat fixtures |
| Turnings | Machining; dry and single-grade |
What Sets the Price of X-750 Scrap
- Contained nickel and chromium, with a niobium credit.
- Grade proof: X-750 kept apart from Inconel 600.
- Form: solids and wire above turnings.
- Contamination with steel hardware or other alloys.
- Lot size and location.
No price list is published; offers are dated.
X-750 Scrap Import and Export
X-750 scrap is declared under heading 7503.00, nickel waste and scrap, with the grade named. See importing into India and export documents. Lots leaving India go through our nickel alloy scrap exporter desk.
Related Reading
Inconel X-750 FAQ
What is Inconel X-750?
A precipitation-hardenable nickel-chromium alloy, UNS N07750 and W.Nr 2.4669, strengthened by titanium, aluminium and niobium.
What is the difference between Inconel X-750 and Inconel 600?
Similar nickel, chromium and iron, but X-750 adds about 2.5% titanium, 0.7% aluminium and 1% niobium so it can be age-hardened. Inconel 600 is a solid-solution alloy without them.
What is X-750 used for?
Springs and fasteners, gas turbine blades, wheels and bolts, rocket thrust chambers, ducting, pressure vessels and hot-working tools.
How is X-750 told apart from Inconel 718?
Inconel 718 has about 18% iron, 5% niobium and 3% molybdenum; X-750 has 5 to 9% iron, about 1% niobium and no molybdenum.
Which HS code applies to Inconel X-750 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 Corporation, INCONEL alloy X-750 (SMC-067, Sept 2004): limiting composition, UNS and W.Nr numbers, physical constants, description, applications and product forms.
- Inconel 600, Inconel 718 and Nimonic 80A values as listed on this site.
Published by Mipra Steel, Khetwadi, Mumbai · Last updated