Alloy B-2,Hastelloy B-2 Bar(Round bar, Flat bar),,E FORU

British Specs:，American Specs:，German Specs:

**Product Data Sheet: Alloy B-2 / Hastelloy® B-2 Bar** **(Round Bar & Flat Bar)** --- ### **1. Product Overview** **Hastelloy® B-2 Bar** is a nickel-molybdenum alloy available in both round and flat bar configurations, specifically engineered for applications requiring exceptional resistance to reducing environments. This low-carbon, low-iron version provides superior performance in hydrochloric acid, sulfuric acid, and other aggressive reducing media, making it ideal for manufacturing corrosion-resistant components in chemical processing, pharmaceutical, and industrial equipment. --- ### **2. Chemical Composition (Typical % by Weight)** | Element | Content (%) | Function | |---------|-------------|----------| | Nickel (Ni) | Balance | Base element providing corrosion resistance and metallurgical stability | | Molybdenum (Mo) | 26.0-30.0 | Primary element for resistance to reducing acids | | Iron (Fe) | 2.0 max | Controlled to minimize detrimental phase formation | | Chromium (Cr) | 1.0 max | Limited to maintain performance in reducing environments | | Manganese (Mn) | 1.0 max | Deoxidizer and process control | | Silicon (Si) | 0.10 max | Controlled to prevent silicide formation | | Carbon (C) | 0.02 max | Minimized to prevent carbide precipitation | | Cobalt (Co) | 1.0 max | Controlled impurity | | Phosphorus (P) | 0.04 max | Controlled to prevent embrittlement | | Sulfur (S) | 0.03 max | Minimized to prevent hot cracking | --- ### **3. Physical & Mechanical Properties** | Property | Round Bar Value | Flat Bar Value | |----------|-----------------|----------------| | Density | 9.22 g/cm³ | 9.22 g/cm³ | | Melting Point | 1330-1380°C | 1330-1380°C | | Thermal Conductivity | 10.8 W/m·K at 20°C | 10.8 W/m·K at 20°C | | Coefficient of Thermal Expansion | 10.3 μm/m·K (20-100°C) | 10.3 μm/m·K (20-100°C) | | Electrical Resistivity | 1.35 μΩ·m at 20°C | 1.35 μΩ·m at 20°C | | Modulus of Elasticity | 217 GPa at 20°C | 217 GPa at 20°C | | Tensile Strength | 965-1200 MPa | 950-1150 MPa | | Yield Strength (0.2% Offset) | 415-690 MPa | 400-650 MPa | | Elongation | 40-60% | 35-55% | | Hardness (Rockwell B) | 95-105 HRB | 90-100 HRB | --- ### **4. Product Applications** #### **4.1 Round Bar Applications** - **Agitator Shafts**: For reactors and mixing vessels in chemical industry - **Valve Stems and Components**: For corrosive fluid handling systems - **Pump Shafts and Sleeves**: In chemical and process pumps - **Fastener Stock**: Material for bolts, studs, and specialized fasteners - **Machined Components**: Bushings, bearings, and precision parts #### **4.2 Flat Bar Applications** - **Structural Supports**: Frames and supports in corrosive environments - **Wear Strips and Guides**: In chemical processing equipment - **Bracket Fabrication**: Support brackets and mounting components - **Heat Exchanger Components**: Support bars and structural elements - **Machined Parts Base**: Stock for flat components and fixtures #### **4.3 Industrial Applications** - **Chemical Processing**: Reactor internals, mixer components - **Pharmaceutical**: Equipment for drug manufacturing processes - **Acid Production**: Components for hydrochloric and sulfuric acid plants - **Pollution Control**: Scrubber system components --- ### **5. Key Features & Benefits** - **Exceptional Resistance to Reducing Acids**: Superior performance in hydrochloric acid at all concentrations and temperatures - **Excellent Thermal Stability**: Maintains mechanical properties at elevated temperatures up to 400°C - **Good Machinability**: Can be precision machined using standard techniques - **Optimized Mechanical Properties**: Combination of high strength and good ductility - **Low Carbon Content**: Minimizes carbide precipitation during welding - **Versatile Fabrication**: Suitable for machining, welding, and forming operations - **Consistent Quality**: Uniform properties throughout material cross-section - **Proven Reliability**: Long service life in demanding chemical environments --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B335 | Standard for Nickel-Molybdenum Alloy Rod and Bar | | UNS | N10665 | Unified Numbering System Designation | | ASME | SB-335 | Code Case for Pressure Component Applications | | DIN | 2.4617 | Material Number and Specification | | EN | 2.4617 | European Standard Designation | | ISO | 9724 | Nickel Alloy Bars for General Purpose | --- ### **7. Product Specifications** #### **7.1 Round Bar Specifications** - **Diameter Range**: 3.0 mm to 300 mm (0.125" to 12") - **Length**: Standard 3-6 meters; custom lengths available - **Diameter Tolerance**: ±0.1 mm to ±0.5% depending on diameter - **Straightness**: ≤1 mm per meter for precision applications - **Surface Finish**: Turned, ground, or polished finishes #### **7.2 Flat Bar Specifications** - **Thickness**: 3.0 mm to 100 mm (0.125" to 4") - **Width**: 10 mm to 300 mm (0.4" to 12") - **Length**: Standard 3-6 meters; custom lengths available - **Thickness Tolerance**: ±0.1 mm to ±0.5% depending on thickness - **Width Tolerance**: ±0.5 mm to ±1.0% depending on width #### **7.3 Available Conditions** - **Solution Annealed**: Optimal corrosion resistance and machinability - **Hot Finished**: For larger sizes and specific applications - **Cold Finished**: Improved surface finish and dimensional accuracy - **Special Tempers**: Various strength levels available upon request --- ### **8. Fabrication & Processing Guidelines** #### **8.1 Machining Recommendations** - **Cutting Tools**: Use carbide tools with positive rake angles - **Cutting Speeds**: 15-30 m/min for rough machining, 25-40 m/min for finishing - **Feed Rates**: Moderate feeds with adequate cooling - **Coolants**: Use sulfur-free cutting fluids for optimal results - **Tool Geometry**: Sharp cutting edges with adequate clearance angles #### **8.2 Welding & Joining** - **Welding Methods**: GTAW (TIG) preferred for critical applications - **Filler Metals**: Use matching composition filler metals - **Preheating**: Generally not required - **Interpass Temperature**: Maintain below 100°C (212°F) - **Post-Weld Heat Treatment**: Usually not required #### **8.3 Heat Treatment** - **Solution Annealing**: 1065-1120°C (1950-2050°F) followed by rapid cooling - **Stress Relieving**: Generally not recommended - **Annealing Atmosphere**: Use protective atmosphere to prevent oxidation --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Testing Protocols**: Mechanical testing, chemical analysis, corrosion testing - **Non-Destructive Testing**: UT, MT, PT available as required - **Certifications**: ISO 9001, ASME, PED 2014/68/EU compliance - **Documentation**: Certified Mill Test Reports with complete material properties --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, bar size, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for critical applications. Hastelloy® is a registered trademark of Haynes International. Compliance with all applicable safety standards, codes, and regulations is mandatory.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2861 gallon liquid totes Special package is available on request.