Hastelloy B-2 has outstanding resistance to hydrochloric acid at all concentrations and temperatures. It also has significant resistance to reducing environments like sulfuric, phosphoric, acetic acids and other nonoxidizing media. Hastelloy B-2 has excellent resistance to pitting corrosion, stress corrosion cracking, and knife line and weld heat-affected zone attack. Hastelloy B-2 has poor resistance to oxidizing environments, therefore, it should not be used where ferric or cupric salts are present as these salts may cause rapid corrosion failure.
Chinese designation: 哈氏合金 B-2
| Element | Min % | Max % |
|---|---|---|
| Mo | 26 | 30 |
| Fe | — | 2 |
| Cr | — | 1 |
| Co | — | 1 |
| Mn | — | 1 |
| Si | — | 0.1 |
| P | — | 0.04 |
| S | — | 0.03 |
| C | — | 0.02 |
| Ni | balance | — |
Chemical composition per the grade specification. Values are nominal; the certified analysis is issued with every order on EN 10204 3.1 documentation.
| Product form | ASTM / EN specification |
|---|---|
| Rod | B 335 |
| Plate, sheet and strip | B 333, B 906 |
| Seamless pipe and tube | B 622 |
| Welded pipe | B 619, B 775 |
| Welded tube | B 626, B 751 |
| Welding fitting | B 366 |
| Forged or rolled pipe flange and forged fitting | B 462 |
| Billet and bar for reforging | B 472 |
| Forging | B 564 |
Hastelloy B-2 (UNS N10665, DIN W. Nr. 2.4617) is a nickel-based alloys grade. Hastelloy B-2 has outstanding resistance to hydrochloric acid at all concentrations and temperatures. It also has significant resistance to reducing environments like sulfuric, phosphoric, acetic acids and other nonoxidizing media. Hastelloy B-2 has excellent resistance to pitting corrosion, stress corrosion cracking, and knife line and weld heat-affected zone attack. Hastelloy B-2 has poor resistance to oxidizing en
ROBAN supplies Hastelloy B-2 as rod, plate, sheet and strip, seamless pipe and tube, welded pipe, welded tube, with custom dimensions to your drawing.
Yes. Every order ships with EN 10204 3.1 material certification covering the actual heat analysis. 3.2 documentation is available where the contract requires it.
Stock items ship within 3 to 7 working days. Cut-to-size and forged items typically run 15 to 30 working days depending on quantity and specification. Send us your drawing or enquiry for a firm lead time.
Drawing, grade, dimensions, quantity and delivery date — we price from those.
Request a Quote →Heat analysis certificate issued with every order at no extra charge.
Quality documentation →Shearing, sawing and machining to the tolerances on your drawing.
Capabilities →Buyers often substitute within a family once service conditions, corrosion behaviour or fabrication method narrow the choice.
