Hastelloy B2 (UNS N10665 / W.Nr. 2.4617) sheet and plate are supplied as nickel-molybdenum alloy for reducing chemical environments, particularly hydrochloric-acid service under suitable conditions. Thickness, dimensions, condition, testing and documentation are reviewed before quotation.
Final suitability depends on medium, temperature, stress, fabrication route, heat treatment and governing code.
Hastelloy B2 Sheet and Plate Specification
| Alloy / UNS |
Hastelloy B2 / N10665 |
| Werkstoff / EN |
2.4617 / NiMo28 |
| Product standard |
ASTM B333 / ASME SB-333 |
| Forms |
Sheet, plate, strip and cut-to-size blanks subject to standard scope |
| Thickness |
Confirmed against mill capability, standard scope and inquiry |
| Condition |
Annealed, solution treated or heat treated as required by the governing specification |
| Surface |
Hot-rolled, cold-rolled, pickled, ground or polished as specified |
| Documentation |
Material test certificate and heat-number traceability as ordered |
Available Product Forms and Processing
| Form |
Processing |
Purchasing points |
| Hot-rolled plate |
Heat treated, descaled or pickled |
Thickness, flatness, surface and edge condition |
| Cold-rolled sheet |
Cold rolled and heat treated |
Gauge, width, surface and tolerance |
| Cut blanks |
Sheared, sawn, waterjet or machined |
Dimensions, edge condition, marking and traceability |
Equivalent Designations
| Commercial designation |
UNS |
Werkstoff |
EN designation |
| Hastelloy B2 |
N10665 |
2.4617 |
NiMo28 |
Chemical Composition
| Ni |
Mo |
Fe |
Cr |
Co |
C |
Si |
| Balance |
26.0–30.0 |
2.0 max |
1.0 max |
1.0 max |
0.02 max |
0.10 max |
Weight percent; final acceptance follows the ordered standard and material test certificate.
Mechanical and Physical Properties
| Property |
Requirement |
Purchasing note |
| Tensile strength |
Confirm to ASTM B333 by thickness and condition |
Report on MTC |
| Yield strength |
Confirm to governing specification |
Condition dependent |
| Elongation |
Confirm to governing specification |
Test direction and gauge length apply |
| Physical properties |
Typical values available for design review |
Not a substitute for code data |
Heat Treatment, Cutting and Fabrication
| Heat treatment |
Follow the governing specification and required final properties. |
| Cutting |
Shearing, sawing, waterjet, plasma or machining selected according to thickness and edge requirements. |
| Forming |
Allow for work hardening, bend radius and intermediate heat treatment where required. |
| Welding |
Use qualified procedures and compatible filler material selected for the service condition. |
Inspection and Quality Documentation
| Identity |
Heat number and PMI when ordered |
| Tests |
Chemical and mechanical results on the MTC |
| Dimensions |
Thickness, width, length, flatness and surface inspection |
| NDT |
Ultrasonic or penetrant inspection subject to order requirements |
Hastelloy B2 Sheet and Plate Applications
| Industry |
Components |
Selection focus |
| Hydrochloric-acid processing |
Vessels, liners and heat exchangers |
Resistance in many reducing acid conditions |
| Chemical manufacturing |
Reactors and transfer equipment |
Nickel-molybdenum chemistry |
| Pharmaceutical processing |
Fabricated process components |
Corrosion resistance where B2 is compatible |
Hastelloy B2 Sheet and Plate Packaging
Sheets and plates are protected according to surface, dimensions, package weight, route and customer specification.
| Form |
Protection |
Confirmation |
| Plate |
Pallet, skid or reinforced wooden case |
Weight, lifting and edge protection |
| Sheet |
Interleaving, protective film and waterproof wrapping |
Surface and moisture protection |
| Cut blanks |
Blocked wooden case |
Count and heat traceability |
Procurement Confirmation
State Hastelloy B2 / UNS N10665, standard edition, thickness, width, length, quantity, condition, surface, tolerance, testing, marking, packing and certificate requirements.
