Alloy B,Brightray B,，EFORU

### **Alloy B / Brightray® B (UNS N10001) - Technical Datasheet** --- #### **1. Overview** **Alloy B**, commercially known as **Brightray® B**, is a nickel-molybdenum alloy specifically developed for exceptional resistance to hydrochloric acid and other non-oxidizing media. This alloy belongs to the Hastelloy®-type family and demonstrates outstanding performance in reducing environments, particularly where hydrochloric acid is present across various concentrations and temperatures. --- #### **2. Chemical Composition (Weight %)** The composition is optimized for maximum corrosion resistance in reducing environments. | Element | Content (%) | Role & Benefit | |---------|-------------|----------------| | **Nickel (Ni)** | Balance | Base element providing fundamental corrosion resistance | | **Molybdenum (Mo)** | 26.0 - 30.0 | Primary element for resistance to hydrochloric acid and reducing media | | **Iron (Fe)** | 4.0 - 7.0 | Controlled for optimal corrosion performance | | **Manganese (Mn)** | ≤ 1.0 | Deoxidizer and workability agent | | **Cobalt (Co)** | ≤ 2.5 | Controlled residual element | | **Chromium (Cr)** | ≤ 1.0 | Deliberately minimized for reducing environments | | **Vanadium (V)** | ≤ 0.20 | Controlled impurity | | **Silicon (Si)** | ≤ 1.0 | Deoxidizer and strength enhancement | | **Carbon (C)** | ≤ 0.05 | Controlled to minimize carbide precipitation | | **Sulfur (S)** | ≤ 0.030 | Controlled impurity | *Note: "Brightray" is a registered trademark of Rolled Alloys* --- #### **3. Physical Properties** The physical properties support its use in aggressive chemical environments. | Property | Value | |----------|-------| | **Density** | 9.24 g/cm³ (0.334 lb/in³) | | **Melting Point** | 1330-1380°C (2425-2515°F) | | **Specific Heat (20°C)** | 380 J/kg·K | | **Thermal Conductivity** | 11.7 W/m·K (at 20°C) | | **Mean Coefficient of Thermal Expansion** | 10.3 × 10⁻⁶/°C (20-300°C) | | **Electrical Resistivity** | 1.35 μΩ·m | | **Modulus of Elasticity** | 210 GPa (30.5 × 10⁶ psi) | | **Magnetic Permeability** | Essentially non-magnetic | --- #### **4. Mechanical Properties** The alloy maintains good mechanical strength in corrosive environments. **Annealed Condition:** | Property | Value | |----------|-------| | **Tensile Strength** | 690-895 MPa (100-130 ksi) | | **Yield Strength (0.2% Offset)** | 310-415 MPa (45-60 ksi) | | **Elongation** | 40-50% | | **Hardness** | 85-100 HRB | **Elevated Temperature Properties (500°C/930°F):** | Property | Value | |----------|-------| | **Tensile Strength** | 480 MPa (70 ksi) | | **Yield Strength** | 275 MPa (40 ksi) | | **Creep Strength** | 120 MPa (17 ksi) | --- #### **5. Product Applications** **Alloy B** serves in highly corrosive reducing environments: - **Chemical Processing:** - Hydrochloric acid production equipment - Sulfuric acid pickling systems - Phosphoric acid evaporators - Acid recovery systems - **Pharmaceutical Industry:** - Reactor vessels for acid-catalyzed reactions - Acid storage and handling systems - Process piping for corrosive intermediates - **Petrochemical Industry:** - Catalyst support grids - Acid gas handling components - Process vessels for organic acid production - **Industrial Applications:** - Heat exchangers in acid service - Pumps and valves for corrosive fluids - Distillation columns for acid concentration - **Pollution Control:** - Scrubbers for acid gas removal - Waste acid treatment equipment - Chemical waste processing vessels --- #### **6. International Standards** The material conforms to various international specifications: | Standard | Specification | |----------|---------------| | **ASTM** | ASTM B333 - Nickel-Molybdenum Alloy Plate, Sheet, and Strip
ASTM B335 - Nickel-Molybdenum Alloy Rod
ASTM B336 - Nickel-Molybdenum Alloy Pipe | | **UNS** | UNS N10001 | | **ASME** | SB-333, SB-335, SB-336 | | **DIN** | DIN 17744 - NiMo28 | | **EN** | EN 10095 - NW 12 | | **ISO** | ISO 6208 - NiMo28 | --- #### **7. Corrosion Resistance** - **Excellent** resistance to hydrochloric acid at all concentrations and temperatures - **Outstanding** performance in sulfuric, phosphoric, and acetic acids - **Good** resistance to hydrogen chloride gas and other reducing media - **Poor** resistance to oxidizing environments (nitric acid, ferric salts) - **Susceptible** to corrosion in presence of oxidizing agents --- #### **8. Fabrication Characteristics** - **Machining:** Requires rigid setups and positive rake angles - **Welding:** Excellent weldability using GTAW with matching filler metal - **Forming:** Good hot and cold working characteristics - **Heat Treatment:** Solution anneal at 1150-1200°C (2100-2190°F) - **Annealing:** Rapid cooling from solution annealing temperature required --- #### **9. Special Considerations** - **Oxidizing Conditions:** Avoid exposure to oxidizing media - **Thermal Stability:** Sensitive to carbide precipitation in 650-950°C range - **Environmental Limits:** Maximum service temperature 1175°C (2150°F) - **Post-Weld Treatment:** Solution annealing recommended after welding --- #### **10. Summary** **Alloy B (Brightray® B / UNS N10001)** represents a specialized nickel-molybdenum alloy engineered specifically for severe reducing environments, particularly hydrochloric acid service. Its high molybdenum content and deliberate minimization of chromium make it exceptionally resistant to non-oxidizing acids while maintaining good mechanical properties and fabricability. Governed by comprehensive international standards including ASTM B333-336, Alloy B remains the material of choice for critical components in chemical processing, pharmaceutical manufacturing, and other industries where resistance to reducing acids is paramount.

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 1714 gallon liquid totes Special package is available on request.