Summary
B-2 is built for reducing acids such as hydrochloric acid, where chromium does not help. C-276 adds chromium so it can also handle oxidising conditions. In scrap, both come out of chemical plant rebuilds.
B-2 carries the highest molybdenum of any common nickel alloy, which makes it valuable. Keep it apart: one XRF chromium reading is all it takes. See Hastelloy B-2 scrap.
Side by Side
| Hastelloy B-2 | Hastelloy C-276 | |
|---|---|---|
| Molybdenum | About 28% | About 16% |
| Chromium | Under 1% | About 15.5% |
| Tungsten | None | About 3.75% |
| Typical service | Hydrochloric acid, reducing conditions | Oxidising and reducing acids, chlorides |
| Common scrap forms | Plate, pipe, valve and pump parts | Plate, sheet, tube, pipe |
Composition Compared
Nominal compositions compared element by element. Change either grade to compare others.
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 Hastelloy B-2 and C-276?
Hastelloy B-2 is nickel with about 28% molybdenum and almost no chromium. Hastelloy C-276 has about 16% molybdenum and 15.5% chromium, plus tungsten.
Can Hastelloy B-2 and Hastelloy C-276 scrap be mixed?
No. Keep them separate. A melter buying either one needs its chemistry to stay within the grade’s limits, and mixing can mean a re-sort or a different valuation.