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.
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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 |
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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 |
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Procurement Confirmation
State Hastelloy B2 / UNS N10665, standard edition, thickness, width, length, quantity, condition, surface, tolerance, testing, marking, packing and certificate requirements.
