Hastelloy B-2: nickel-molybdenum alloy offering outstanding resistance to hydrochloric acid at all concentrations and temperatures, excellent performance in reducing environments (sulfuric, phosphoric, acetic acids), superior weldability without post-weld heat treatment, and strong pitting and SCC resistance – not recommended for oxidizing media. UNS N10665. W.N.r 2.4617.
Hastelloy B-2 is a nickel-molybdenum alloy known for its exceptional resistance to hydrochloric acid and other reducing environments. It is widely used in chemical processing industries where strong acids and harsh conditions are present.
This alloy offers excellent resistance to pitting, stress corrosion cracking, and chemical attack, making it a reliable choice for demanding applications
Hengyi Metal offers high-quality nickel alloy products with competitive pricing and fast delivery
Contact us now for a quotation
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
Related Products:
Hastelloy C276
Incoloy 825
Inconel 625
Related Articles
Hastelloy B2 VS C276 comparison
Hastelloy C22 vs C276 Comparison
Hastelloy c2000-guide
Key Features
- Outstanding resistance to hydrochloric acid at all concentrations
- Excellent performance in reducing environments
- High resistance to pitting and stress corrosion cracking
- Good thermal stability and mechanical strength
- Suitable for welding and fabrication
Hastelloy B-2 vs Other Alloys
B-2 vs C276
- B-2: Superior in strong reducing environments
- C276: Better in oxidizing environments
B-2 vs C2000
- B-2: Best for hydrochloric acid
- C2000: More versatile across mixed environments
Chemical composition
% | Ni | Mo | Fe | Cr | Co | C | Mn | Si | P | S |
min | balance | 26.0 | ||||||||
max | 30.0 | 2.0 | 1.00 | 1.00 | 0.020 | 1.00 | 0.10 | 0.040 | 0.030 |
Specifications & Standards
Hastelloy B-2 is available in a wide range of product forms including plate, sheet, strip, bar, wire, pipe, tube, and forgings.
| Product Form | ASTM / ASME Specifications | AMS / Other |
|---|---|---|
| Plate, Sheet, Strip | ASTM B333, ASME SB333 | – |
| Bar & Rod | ASTM B335, ASME SB335 | – |
| Seamless Pipe & Tube | ASTM B622, ASME SB622 | – |
| Welded Pipe | ASTM B619, ASME SB619 | – |
| Welded Tube | ASTM B626, ASME SB626 | – |
| Fittings | ASTM B366, ASME SB366 | – |
| Forgings | ASTM B564 | – |
| Wire (Filler Metal) | AWS A5.14 ERNi |
Note: Hastelloy is a registered trademark of Haynes International, Inc.
Alloy | ASTM | DIN | GB | |
|---|---|---|---|---|
New grades | Old grades | |||
| Hastelloy C-22 | UNS N06022 | 2.4602 | NS3308 | |
| Hastelloy C-276 | UNS N10276 | 2.4819 | NS3304 | NS334 |
| Hastelloy C-4 | UNS N06455 | 2.4610 | ||
| Hastelloy C-2000 | UNS N06200 | 2.4675 | ||
| Hastelloy C-59 | UNS N06059 | 2.4605 | ||
| Hastelloy B | UNS N10001 | NS3201 | NS321 | |
| Hastelloy B-2 | UNS N10665 | 2.4617 | NS3202 | NS322 |
| Hastelloy B-3 | UNS N10675 | 2.4615 | NS3203 | |
| Hastelloy X | UNS N06002 | 2.4613 | ||
| Hastelloy G30 | UNS N06030 | 2.4603 | ||
