Alloy B-2,Hastelloy B-2 Pipe,,E FORU

British Specs:，American Specs:，German Specs:

**Product Data Sheet: Alloy B-2 / Hastelloy® B-2 Pipe** **Nickel-Molybdenum Alloy Pipe for Severe Corrosive Service** --- ### **1. Product Overview** **Hastelloy® B-2 Pipe** is a nickel-molybdenum alloy piping product specifically engineered for handling highly aggressive reducing environments. Available in both seamless and welded configurations, this pipe offers exceptional resistance to hydrochloric acid, sulfuric acid, and other reducing media across all concentrations and temperatures, making it ideal for chemical processing, pharmaceutical, and industrial applications where conventional materials fail. --- ### **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 | Value (Typical) | |----------|-----------------| | Density | 9.22 g/cm³ | | Melting Point | 1330-1380°C (2426-2516°F) | | Thermal Conductivity | 10.8 W/m·K at 20°C | | Coefficient of Thermal Expansion | 10.3 μm/m·K (20-100°C) | | Specific Heat Capacity | 427 J/kg·K at 20°C | | Modulus of Elasticity | 217 GPa at 20°C | | Tensile Strength | 965 MPa min | | Yield Strength (0.2% Offset) | 415 MPa min | | Elongation | 40% min | | Hardness (Rockwell B) | 100 HRB max | | Maximum Service Temperature | 400°C (750°F) | --- ### **4. Product Applications** #### **4.1 Chemical Processing Industry** - **Hydrochloric Acid Service**: Piping systems for all concentrations and temperatures - **Sulfuric Acid Handling**: Transfer lines for concentrated sulfuric acid - **Acetic Acid Production**: Process piping for organic acid manufacturing - **Phosphoric Acid Systems**: Piping for acid concentration and purification #### **4.2 Pharmaceutical & Fine Chemicals** - **Reactor Transfer Lines**: For corrosive chemical processes - **Process Piping**: Handling aggressive intermediates and products - **Utility Lines**: Acid and solvent distribution systems - **Waste Handling**: Corrosive effluent and by-product lines #### **4.3 Industrial Applications** - **Pickling Lines**: Acid circulation and process piping - **Metal Treatment**: Chemical processing and surface treatment lines - **Acid Recovery**: Piping for regeneration and recovery systems - **Laboratory Systems**: High-purity chemical handling --- ### **5. Key Features & Benefits** - **Exceptional Resistance to Reducing Acids**: Superior performance in hydrochloric acid at all concentrations and temperatures - **Excellent Thermal Stability**: Maintains corrosion resistance at elevated temperatures - **Low Carbon Content**: Minimizes carbide precipitation during welding and service - **Good Fabricability**: Can be welded, bent, and formed using standard techniques - **Optimized Wall Thickness**: Consistent wall distribution for maximum service life - **Smooth Internal Surface**: Minimizes friction loss and particle accumulation - **Cost-Effective Solution**: Provides long service life with minimal maintenance - **Full Traceability**: Complete material certification and quality documentation --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B622 | Standard Specification for Seamless Nickel and Nickel Alloy Pipe | | ASTM | B619 | Standard for Welded Nickel and Nickel Alloy Pipe | | ASTM | B775 | General Requirements for Nickel Alloy Pipe | | UNS | N10665 | Unified Numbering System Designation | | ASME | SB-622 | Code Case for Pressure Vessel Applications | | DIN | 2.4617 | Material Number and Specification | | EN | 2.4617 | European Standard Designation | --- ### **7. Product Specifications** #### **7.1 Pipe Types & Sizes** - **Seamless Pipe**: OD 6mm to 250mm, Wall thickness 1.0mm to 25mm - **Welded Pipe**: OD 15mm to 600mm, Wall thickness 1.5mm to 12mm - **Schedule**: 5S, 10S, 40S, 80S, and custom schedules available - **Length**: Standard 3-8 meters; custom lengths and cut-to-size available #### **7.2 Technical Specifications** - **OD Tolerance**: ±1% or ±0.1mm, whichever is greater - **Wall Thickness Tolerance**: ±10% for seamless, ±7.5% for welded - **Straightness**: ≤1.5mm per meter - **Surface Finish**: Pickled, bright annealed, or beveled ends for welding --- ### **8. Fabrication & Installation Guidelines** #### **8.1 Cutting & Preparation** - **Cutting Methods**: Band saw, abrasive wheel, or plasma cutting recommended - **End Preparation**: Machine bevels to specified welding procedure requirements - **Cleaning**: Remove all contaminants from internal and external surfaces before welding #### **8.2 Welding Procedures** - **Welding Methods**: GTAW (TIG) preferred for root passes - **Filler Metals**: Use matching composition filler metals - **Shielding Gases**: 100% argon for GTAW - **Purge Gas**: Maintain proper internal purge during welding #### **8.3 Installation & Support** - **Support Spacing**: Follow ASME B31.3 requirements for corrosive service - **Expansion Management**: Provide adequate expansion loops and flexibility - **Corrosion Protection**: Isolate from carbon steel supports --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Testing Protocols**: Hydrostatic testing, eddy current, ultrasonic examination - **Chemical Analysis**: Verified by spectrometer and wet chemical methods - **Mechanical Testing**: Tensile, hardness, and flattening tests as required - **Certifications**: ISO 9001, PED 2014/68/EU, NORSOK compliance - **Documentation**: Certified Mill Test Reports with complete traceability --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, pipe size, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for pressure-containing 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 2862 gallon liquid totes Special package is available on request.