Hastelloy B-3 is an advanced nickel-molybdenum alloy developed to provide excellent resistance to hydrochloric acid and other reducing environments, while offering improved thermal stability compared to earlier B-series alloys.
It is specifically designed to overcome the fabrication and stability limitations of Hastelloy B-2, making it a more reliable choice for complex industrial 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 B3 comparison
Hastelloy B2 VS C276 comparison
Hastelloy C22 vs C276 Comparison
Hastelloy c2000-guide
Key Features
- Exceptional resistance to hydrochloric acid
- Improved thermal stability over Hastelloy B-2
- Reduced susceptibility to grain boundary precipitation
- Excellent resistance to pitting and stress corrosion cracking
- Good weldability and fabrication performance
Applications
Hastelloy B-3 is widely used in:
- Chemical processing equipment
- Hydrochloric acid handling systems
- Heat exchangers
- Reactors and pressure vessels
- Petrochemical and pharmaceutical industries
Hastelloy B-3 vs B-2
Key Improvements
- Better thermal stability
- Reduced risk of fabrication-related cracking
- More consistent performance during welding
When to Choose B-3
- When fabrication reliability is critical
- When thermal cycling is involved
Read comparison: B-2 vs B-3 Guide
Chemical composition
% | Ni | Mo | Ni+Mo | Cr | Fe | W | Co | C | Mn | Si | P | S | Al | Ti | Cu | Nb | Ta | V | Zr |
min | 65.0 | 27.0 | 94.0 | 1.0 | 1.0 | ||||||||||||||
max | 32.0 | 98.0 | 3.0 | 3.0 | 3.0 | 3.0 | 0.010 | 3.0 | 0.10 | 0.030 | 0.010 | 0.50 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.10 |
Specifications & Standards
Hastelloy B-3 is available in a wide range of product forms including plate, sheet, strip, bar, wire, pipe, tube, forgings, and fittings.
| Product Form | ASTM / ASME Specifications | AMS / Other |
|---|---|---|
| Plate, Sheet, Strip | ASTM B333, ASME SB333 | — |
| Bar & Rod | ASTM B335, ASME SB335 | — |
| Wire | ASTM B335 | AWS A5.14 ERNiMo-10 (filler) |
| 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 | — |
| General / Other | ASME Code Case 2140 | NACE MR0175 (verify) |
FAQ Section
What is Hastelloy B-3 used for?
Hastelloy B-3 is used in chemical processing applications involving hydrochloric acid and reducing environments.
What is the difference between B-2 and B-3?
B-3 offers improved thermal stability and better fabrication performance compared to B-2.
Is Hastelloy B-3 better than B-2?
In many cases, yes. B-3 reduces fabrication issues and improves long-term reliability.
Is Hastelloy B-3 weldable?
Yes, it has good weldability and is suitable for complex manufacturing processes.
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 | ||
