HASTELLOY® B3 UNS N10675
A high-performance alloy engineered to deliver exceptional resistance to hydrochloric acid and other highly reducing chemical environments.
Reliable performance in aggressive chemical environments
HASTELLOY® B3 is a technical evolution of Hastelloy B2, offering improved thermal stability and better performance under mechanical stress.
HASTELLOY® B3, also identified as UNS N10675, is a nickel-molybdenum alloy designed to withstand severe chemical conditions, especially when hydrochloric acid is the main corrosion factor.
Its high molybdenum content provides outstanding resistance to uniform corrosion in reducing media. This makes it a strategic solution for processes where safety, production continuity and component service life are critical.
In manufacturing and machining, it is considered a technically demanding material due to its tendency to work-harden and its low thermal conductivity.
Nickel base with high molybdenum content
| Element | Approximate content |
|---|---|
| Nickel, Ni | Balance |
| Molybdenum, Mo | 28–30% |
| Iron, Fe | 1–3% |
| Chromium, Cr | ≤ 1.5% |
Why choose HASTELLOY® B3
Resistance to hydrochloric acid
Excellent performance in hydrochloric acid environments where other alloys may lose effectiveness.
High resistance in reducing media
A reliable solution for chemical processes involving aggressive media and high risk of uniform corrosion.
Improved thermal stability
Improved performance compared with Hastelloy B2, reducing susceptibility to embrittlement after thermal cycles.
Stress corrosion resistance
Good performance against stress corrosion cracking under specific service conditions.
Good weldability
Allows joining processes under proper technical control and precise manufacturing parameters.
Service according to chemical media
Typical service temperature depends on the chemical environment, concentration and working conditions.
Components for critical chemical processes
HASTELLOY® B3 is a strategic alloy when hydrochloric acid and reducing media represent the main corrosion risk.
Demanding material, controlled process
HASTELLOY® B3 requires a precise machining strategy. Its low thermal conductivity and tendency to work-harden can accelerate tool wear if the process is not properly controlled.
Recommended to maintain cutting stability and tool life.
Help prevent vibration, irregular cutting and surface work-hardening.
Helps control temperature, chip evacuation and tool wear.
Essential for technical parts with demanding tolerances.
The machining strategy must be adapted to the geometry, production batch and final application.
Do you need to machine HASTELLOY® B3?
At AREM-CNC, we review technical drawings, special materials and manufacturing requirements to provide machining solutions adapted to demanding industrial environments.