Summary
Both families come from the same producer, which explains the naming confusion. For scrap, the difference is the balance of nickel against iron. An "Inconel 825" lot is really Incoloy 825, with about 42% nickel, and it will be valued that way once it is tested.
Side by Side
| Inconel | Incoloy | |
|---|---|---|
| Nickel | About 50–76% | About 32–45% |
| Iron | Low (under 20%) | High (about 20–46%) |
| Examples | 600, 625, 718 | 800H, 825, 925 |
| Scrap value | Higher nickel | Lower nickel, more iron |
Composition: Inconel 625 vs Incoloy 825
Representative grades compared element by element. Values are the nominal figures from each grade page; change either grade to compare others.
On a handheld XRF: the clearest differences between Inconel 600 and Incoloy 800 are nickel (76% vs 32.5%), iron (8% vs 45.7%) and chromium (15.5% vs 21%). Light elements such as aluminium, silicon, carbon and nitrogen need a light-element instrument, OES or a laboratory.
On the XRF
Switch the grade to see how the fingerprint changes. See how XRF sorts nickel alloys.
FAQ
What is the main difference between Inconel and Incoloy?
Inconel alloys are nickel-base, typically 50–76% nickel. Incoloy alloys are iron-nickel-chromium, with about 30–45% nickel and a large share of iron.
What are the UNS numbers of Inconel 600 and Incoloy 800?
Inconel 600 is UNS N06600 and Incoloy 800 is UNS N08800.
Which has more nickel, Inconel 600 or Incoloy 800?
Inconel 600, with about 76% nickel against about 32.5% in Incoloy 800, using the nominal values on this site.
Can Inconel 600 and Incoloy 800 scrap be sold in one lot?
Not without losing value. They differ most in iron and chromium, so a melter making either grade wants the other kept out. Mipra Steel buys and sells them as separate lots.
Sources and Review
Composition figures on this page are the nominal values from each grade's own page on this site, where the producer datasheet or standard is named in full. The comparison widget reads the same values. The sources behind the grades are listed below.
- Special Metals Corporation, Product Handbook of High-Performance Nickel Alloys: Inconel 600 Buyer, Importer and Exporter
- Special Metals Corporation, INCOLOY alloy 800 (SMC-046, Sept 2004): Incoloy 800, 800H and 800HT
- Special Metals Corporation, INCOLOY alloy 825 (SMC-030, 2004): Incoloy 825 Buyer, Importer and Exporter
Published by Mipra Steel, Khetwadi, Mumbai · Last updated