Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of hastelloy b-16 alloy (uns n10675) in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Hastelloy B-16 Alloy (UNS N10675) is a next-generation nickel-molybdenum alloy specifically engineered for extreme reducing environments, particularly in hydrochloric acid, sulfuric acid, and hydrogen-rich systems. Compared to earlier B-series alloys, B-16 offers enhanced thermal stability, improved resistance to intergranular corrosion, and superior fabrication performance, making it an ideal solution for demanding chemical processing and energy applications.
This alloy is widely used in seamless pipes, welded tubes, plates, and fittings, manufactured in accordance with ASTM and ASME standards for global industrial projects.
Technical Specifications
➤ Product Standards
ASTM B622 – Seamless Pipe & Tube
ASTM B619 – Welded Pipe
ASTM B335 – Plate / Sheet / Strip
➤ Available Forms
Seamless Pipe / Welded Pipe
Tube (Heat Exchanger / Instrumentation)
Plate / Sheet / Coil
Bar / Rod / Forgings
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Iron (Fe) | ≤ 5.0 |
| Chromium (Cr) | ≤ 1.0 |
| Cobalt (Co) | ≤ 2.5 |
| Carbon (C) | ≤ 0.02 |
Key Features & Advantages
✅ Outstanding Corrosion Resistance
Excellent resistance to hydrochloric acid (HCl)
Strong performance in reducing environments
Resistant to pitting and crevice corrosion
✅ Improved Thermal Stability
Reduced carbide precipitation
Better performance than B2 in welded conditions
✅ Excellent Fabrication Performance
Suitable for cold and hot forming
Compatible with TIG / MIG welding processes
✅ Resistance to Hydrogen Damage
Ideal for hydrogen-rich and sour gas environments
Comparison Guide – B16 vs B2 vs B3 vs C276
| Property | B2 Alloy | B3 Alloy | B16 Alloy | C276 Alloy |
|---|---|---|---|---|
| Corrosion Type | Strong reducing | Improved B2 | Balanced & optimized | Oxidizing + reducing |
| Thermal Stability | Low | Medium | High | High |
| Weldability | Moderate | Good | Excellent | Excellent |
| Oxidizing Resistance | Poor | Poor | Poor | Excellent |
| Main Application | HCl systems | Chemical plants | Advanced chemical systems | Mixed acid environments |
Key Insight:
B16 = upgraded B-series alloy with better stability and weld performance
C276 = more versatile, but higher cost
Choose B16 for pure reducing environments with better reliability
Applications
🏭 Chemical Processing
Hydrochloric acid production systems
Acid pickling equipment
Reactors and heat exchangers
⚡ Oil & Gas Industry
Hydrogenation units
Sour gas (H₂S) handling systems
🧪 Environmental & Pharmaceutical
Corrosive waste treatment systems
High-purity chemical processing equipment
Inspection & Quality Assurance
We ensure strict quality control for all Hastelloy B-16 products:
PMI (Positive Material Identification)
Chemical Composition Analysis (OES)
Ultrasonic Testing (UT)
Radiographic Testing (RT)
Hydrostatic Pressure Testing
Third-Party Inspection: SGS / BV / TUV
Product Delivery Standards
Export-standard seaworthy packaging
Wooden cases / bundles with anti-corrosion protection
Clear labeling with heat number traceability
Full MTC (Mill Test Certificate EN 10204 3.1 / 3.2)
FAQ
1. What is Hastelloy B-16 alloy?
Hastelloy B-16 (UNS N10675) is a nickel-molybdenum alloy designed for strong reducing environments, especially hydrochloric acid and sulfuric acid applications. It offers improved thermal stability and corrosion resistance compared to earlier B-series alloys.
2. What are the main advantages of B-16 over B2 and B3?
Hastelloy B-16 provides:
Better thermal stability
Reduced intergranular corrosion risk
Improved weldability
More reliable performance in long-term chemical processing systems
3. Is Hastelloy B-16 suitable for hydrochloric acid?
Yes. B-16 is one of the best alloys for hydrochloric acid environments, offering excellent resistance across a wide range of concentrations and temperatures.
4. Can Hastelloy B-16 be used in oxidizing environments?
No. Like other B-series alloys, B-16 is not suitable for oxidizing media such as nitric acid or ferric chloride solutions.
5. What is the difference between Hastelloy B-16 and Hastelloy C276?
B-16: Optimized for reducing environments (HCl, H₂SO₄)
C276: Suitable for both oxidizing and reducing environments
👉 C276 is more versatile, but B-16 is often more cost-effective for purely reducing conditions.
6. What forms are available for Hastelloy B-16?
Hastelloy B-16 is available in:
Seamless pipes and tubes
Welded pipes
Plates and sheets
Bars and rods
Pipe fittings and flanges
7. What standards apply to Hastelloy B-16 products?
Common standards include:
ASTM B622 (Seamless Pipe & Tube)
ASTM B619 (Welded Pipe)
ASTM B335 (Plate / Sheet)
8. Is Hastelloy B-16 easy to weld and fabricate?
Yes. B-16 offers good fabrication properties and can be welded using:
TIG (GTAW)
MIG (GMAW)
Proper heat control is recommended to maintain corrosion resistance.
9. What industries use Hastelloy B-16 alloy?
Typical industries include:
Chemical processing
Oil & gas (sour service, hydrogen systems)
Environmental engineering
Pharmaceutical manufacturing
10. Does Hastelloy B-16 resist hydrogen embrittlement?
Yes. B-16 has excellent resistance to hydrogen damage, making it suitable for hydrogen-rich and high-pressure environments.
11. What inspection tests are required for B-16 alloy products?
Standard inspection includes:
PMI (Positive Material Identification)
Chemical composition analysis
Ultrasonic testing (UT)
Radiographic testing (RT)
Hydrostatic testing
Third-party inspection (SGS, BV, TUV) is often available.
12. How to choose between B-16, B2, B3, and C276?
Choose B-16 → Best balance of performance & stability in reducing environments
Choose B2/B3 → Cost-sensitive projects
Choose C276 → Mixed corrosive environments
Looking for a reliable Hastelloy B-16 (UNS N10675) manufacturer and exporter?
We are ready to support your project with high-quality products and professional service.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+8615769214734
Hot Tags: hastelloy b-16 alloy (uns n10675), China hastelloy b-16 alloy (uns n10675) manufacturers, suppliers, factory
