Special alloys / Supply & sourcing
Nickel-molybdenum and nickel-chromium-molybdenum Hastelloy® alloys for severe chemical-process corrosion, specified by grade and UNS number.
Grade discovery
Hastelloy® is a registered trademark of Haynes International. Grades are supplied against the stated ASTM/ASME specification; make and origin are confirmed at quotation.
Grades in this category
| Grade | UNS | W.Nr. | Key property | Typical use |
|---|---|---|---|---|
| Hastelloy® C-276 | N10276 | 2.4819 | Most versatile corrosion-resistant alloy | FGD, chemical reactors, pulp bleaching |
| Hastelloy® C-22 | N06022 | 2.4602 | Better oxidising resistance than C-276 | Pharmaceutical, pickling, waste incineration |
| Hastelloy® C-4 | N06455 | 2.4610 | Thermally stable C-alloy | Chemical plant parts exposed to high temperature |
| Hastelloy® B-2 | N10665 | 2.4617 | Hydrochloric-acid resistant | HCl, sulphuric and phosphoric acid service |
| Hastelloy® B-3 | N10675 | 2.4600 | More thermally stable B-alloy | HCl processing, acetic acid, vessels |
The listed range is for supply and sourcing, not a statement of current stock. Grade, form, condition, make, origin, documentation and delivery are confirmed at quotation.
Source: Rajkamal Metals product range, October 2026. Source undated; reviewed 3 October 2026. Designations identify enquiries, not equivalence or suitability.
Forms we supply
Hastelloy in every common form.
C-276, C-22 and C-4 nickel-chromium-molybdenum alloys for mixed oxidising and reducing media, and B-2/B-3 nickel-molybdenum alloys for hydrochloric acid and other strongly reducing environments.
Corrosion & temperature resistance
The C-family resists pitting, crevice corrosion and stress-corrosion cracking in chlorides, wet chlorine, hypochlorite and mixed acids. The B-family is for pure reducing acids (HCl, H₂SO₄) and must not be used where ferric or cupric ions or oxidisers are present.
Applications
Chemical reactors, scrubbers and flue-gas desulphurisation, pulp and paper bleaching, pharmaceutical process equipment and acid handling.
Before we quote
These fields help us review your request. Size range, make, origin, condition, documentation and availability are confirmed against the complete enquiry.
