Nickel alloys
EU
2.4600 - NiMo29Cr
US
Alloy B3 - UNS N10675
The 2.4600 nickel-molybdenum alloy (B3 or B4 alloy) offers good intergranular corrosion resistance. It is very resistant to reducing media such as hydrochloric/sulfuric acid at a wide range of concentrations and temperatures.
Hastelloy B3 - Nickel alloy UNS N10675 - Available from stock
The 2.4600 alloy, also known by the names B-3alloy and UNS N10675, is a nickel and molybdenum-based alloy enriched with chromium. This alloy is specially designed to offer excellent corrosion resistance in a variety of conditions, especially in corrosive and reducing environments.
Here’s a technical overview of this alloy:
- Europe: 2.4600 | NiMo29Cr
- USA: Alloy B3 | UNS N10675
- Europe: DIN 17744 | DIN 17750 | DIN 17751 | DIN 17752 | DIN 17753
- USA: ASTM B333 | B335 | B564 | B619 | B622 | B626
- Intergranular corrosion resistance: prevents degradation along the grain boundaries, crucial for maintaining structural integrity in corrosive conditions.
- Excellent resistance to reducing media: extremely effective against hydrochloric and sulphuric acids across a wide range of concentrations and temperatures, resists corrosion in conditions that other alloys fail to withstand.
- Long-lasting: maintains its mechanical properties and corrosion resistance even after being exposed to harsh conditions for an extended period of time.
- The B-3 alloy is generally used in a solution state for maximum corrosion resistance. Specific heat treatments can be applied in order to optimise its mechanical properties, depending on application requirements.
Properties
- Intergranular corrosion resistance: prevents degradation along the grain boundaries, crucial for maintaining structural integrity in corrosive conditions.
- Excellent resistance to reducing media: extremely effective against hydrochloric and sulphuric acids across a wide range of concentrations and temperatures, resists corrosion in conditions that other alloys fail to withstand.
- Long-lasting: maintains its mechanical properties and corrosion resistance even after being exposed to harsh conditions for an extended period of time.
Standards and Designations
Heat treatment
- The B-3 alloy is generally used in a solution state for maximum corrosion resistance. Specific heat treatments can be applied in order to optimise its mechanical properties, depending on application requirements.
Special advantages
Conclusion
Application
- Mainly used in the chemical industry for treatment equipment and production lines exposed to strong acids and other corrosive media.
- Suited to applications requiring high corrosion resistance, such as heat exchangers, reaction vessels, and tubing systems using in acid treatment plants.
- The B-3 / 2.4600 alloy is known for its ability to withstand a wide range of corrosive conditions, especially acidic environments where other materials may fail. This makes it a reliable solution for heavy-duty industrial applications
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