Get in Touch with TiAlloy Company
Chromium Content by Grade: Published Ranges
Chromium content is the practical differentiator among these nickel alloys — it drives the corrosion-resistance ceiling in oxidizing environments. The bars below show only the nominal chromium ranges explicitly published on this page (0-25% Cr scale).
Why Chromium Content Matters
Some of these alloys carry specific ASME Boiler and Pressure Vessel Code recognition for pressure-retaining service, but choosing a lower-chromium grade for a highly oxidizing environment that demands a high-chromium value is a common and costly mistake.
Inconel 600
14-17% Cr
Inconel 625
20-23% Cr
Hastelloy-C22
20-23% Cr
0%5%10%15%20%25%
Inconel 718
No chromium percentage published on this page — see full specification sheet.
Hastelloy C-276
No chromium percentage published on this page — see full specification sheet.
Ranges referenced from Special Metals Corporation’s Inconel 625 technical bulletin and Haynes International’s Hastelloy C-276 data page, as cited in the References and Sources section above.
