Alloy C276,Hastelloy C276 Rod,UNS N10276,E FORU

British Specs:，American Specs:AMS 5750 ASTM B462 ASTM B564 ASTM B574 ASTM B575 ASTM B622 ASTM B626 (Tube *) ASTM B619 ASTM B775，German Specs:WS 2.4819

### **Product Datasheet: Alloy C-276 / Hastelloy C-276 Rod (UNS N10276)** **Alloy C-276** (commercially known as **Hastelloy C-276**) rod is a nickel-molybdenum-chromium superalloy supplied in rod and bar form, offering exceptional corrosion resistance across a wide range of severe environments. This product form is specifically designed for machining critical components that require outstanding performance in aggressive chemical media, high-temperature applications, and corrosive processing conditions. --- #### **1. Chemical Composition** The chemical composition of Hastelloy C-276 rod is precisely controlled to ensure optimal corrosion resistance: | Element | Content (%) | |:---|:---| | **Nickel (Ni)** | Balance | | **Molybdenum (Mo)** | 15.0 - 17.0 | | **Chromium (Cr)** | 14.5 - 16.5 | | **Iron (Fe)** | 4.0 - 7.0 | | **Tungsten (W)** | 3.0 - 4.5 | | **Cobalt (Co)** | 2.5 max | | **Manganese (Mn)** | 1.0 max | | **Vanadium (V)** | 0.35 max | | **Silicon (Si)** | 0.08 max | | **Carbon (C)** | 0.01 max | | **Phosphorus (P)** | 0.025 max | | **Sulfur (S)** | 0.01 max | *Note: The low carbon and silicon content minimizes carbide precipitation in the heat-affected zone during welding, maintaining excellent corrosion resistance in fabricated structures.* --- #### **2. Physical Properties** Hastelloy C-276 rod exhibits consistent physical properties across all diameters: | Property | Value | |:---|:---| | **Density** | 8.89 g/cm³ (0.321 lb/in³) | | **Melting Range** | 1325 - 1370°C (2420 - 2500°F) | | **Coefficient of Thermal Expansion** | 11.2 × 10⁻⁶/°C (20-100°C) | | **Thermal Conductivity** | 10.2 W/m·K (at 100°C) | | **Specific Heat** | 427 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 205 GPa (29.7 × 10⁶ psi) | | **Electrical Resistivity** | 1.30 μΩ·m | | **Magnetic Permeability** | <1.001 (essentially non-magnetic) | --- #### **3. Mechanical Properties** **Standard Mechanical Properties (Annealed Condition per ASTM B574):** | Property | Value | |:---|:---| | **Tensile Strength** | 790 MPa (115 ksi) min | | **Yield Strength (0.2% Offset)** | 415 MPa (60 ksi) min | | **Elongation** | 55% min | | **Reduction of Area** | 65% min | | **Hardness** | 90 HRB max | **Elevated Temperature Properties:** - **Service Temperature:** Up to 1090°C (2000°F) - **Creep Strength:** Excellent up to 870°C (1600°F) - **Stress Rupture Strength:** 170 MPa at 650°C (1200°F) --- #### **4. Product Specifications** **Available Forms & Sizes:** - **Round Rod:** Diameters 3mm to 300mm (0.125" to 12") - **Hexagonal Bar:** Across flats 6mm to 100mm - **Square Bar:** 6mm to 100mm - **Surface Finish:** Hot finished, cold drawn, turned, ground, polished **Standard Dimensions & Tolerances:** - **Diameter Tolerance:** ±0.1mm to ±0.5mm depending on size - **Straightness:** Typically 1mm per meter maximum - **Length:** Standard 3-6 meters, custom lengths available --- #### **5. Product Applications** **Chemical Processing Industry:** - **Pump Shafts:** For corrosive fluid handling - **Valve Stems and Trim:** In severe service applications - **Mixer Components:** Agitators and shafts for reactors - **Fasteners:** High-strength corrosion-resistant bolts and studs - **Instrumentation Components:** Sensor housings and probes **Oil & Gas Industry:** - **Downhole Tools:** Mandrels, connectors, and subs - **Wellhead Components:** Valve stems and trim parts - **Subsea Equipment:** Actuator rods and hydraulic components - **Refinery Components:** Reactor internals and support rods **Pollution Control Systems:** - **Scrubber Components:** Support rods and internal structures - **Stack Liners:** Support systems and fastening elements - **Waste Treatment:** Mixer shafts and agitator components **Pulp and Paper Industry:** - **Digester Components:** Agitator shafts and internal supports - **Bleach Plant Equipment:** Mixer shafts and valve components - **Chemical Recovery:** Evaporator components and supports **Power Generation:** - **FGD Systems:** Absorber tower internals and supports - **Heat Exchanger Components:** Tube sheets and support rods - **Nuclear Components:** Control rod mechanisms and supports --- #### **6. International Standards** **Material Standards:** - **UNS N10276**: Unified Numbering System designation - **ASTM B574**: Standard Specification for Low-Carbon Nickel-Molybdenum-Chromium Alloy Rod - **ASME SB574**: ASME Boiler and Pressure Vessel Code - **DIN 2.4819**: German Industrial Standard - **EN 10095**: NiMo16Cr15W (European Standard) **Industry Specifications:** - **NACE MR0175/ISO 15156**: Suitable for sour service applications - **API 6ACRA**: Corrosion-resistant alloy applications - **PED 2014/68/EU**: Pressure Equipment Directive compliant - **ASTM A484**: General Requirements for Stainless Steel Bars **Quality Standards:** - **ASTM E8**: Standard Test Methods for Tension Testing - **ASTM E10**: Standard Test Method for Brinell Hardness - **ASTM E112**: Standard Test Methods for Determining Average Grain Size --- #### **7. Corrosion Resistance** **Excellent Performance In:** - **Hydrochloric Acid:** All concentrations and temperatures - **Sulfuric Acid:** Wide range of concentrations - **Phosphoric Acid:** Resistant to all concentrations - **Chloride Environments:** Superior pitting and crevice corrosion resistance - **Wet Chlorine Gas:** Outstanding performance - **Organic Acids:** Formic, acetic, and other organic acids **Corrosion Performance Data:** - **Critical Pitting Temperature:** >85°C - **Critical Crevice Temperature:** >65°C - **Pitting Resistance Equivalent Number (PREN):** ~69 - **General Corrosion Rate:** <0.1 mm/year in most aggressive media --- #### **8. Machining & Processing** **Machining Characteristics:** - **Machinability Rating:** 40-50% (compared to 1212 steel) - **Recommended Tools:** Carbide or premium high-speed steel - **Cutting Speeds:** 15-25 m/min for turning operations - **Feed Rates:** Moderate with positive rake angles - **Coolant Requirements:** Essential for optimum tool life **Heat Treatment:** - **Solution Annealing:** 1120-1175°C (2050-2150°F) + rapid quench - **Stress Relieving:** Not recommended due to potential corrosion issues - **Aging Treatment:** Not applicable for this alloy **Welding Considerations:** - **Recommended Processes:** GTAW, GMAW - **Filler Metal:** ERNiCrMo-4 - **Preheat:** Generally not required - **Post-Weld Heat Treatment:** Usually not necessary --- #### **9. Quality Assurance** **Testing & Certification:** - **Chemical Analysis:** Certified mill test reports - **Mechanical Testing:** Tensile, hardness tests - **Non-Destructive Testing:** UT, MT, PT as required - **Dimensional Inspection:** To specified tolerances - **Corrosion Testing:** Per customer requirements **Certification Requirements:** - **EN 10204 3.1/3.2**: Material inspection certificates - **NACE Compliance**: For sour service applications - **Third-Party Inspection**: Available as required --- #### **10. Key Advantages** * **Exceptional Corrosion Resistance:** Outstanding performance in diverse corrosive environments * **Excellent Machinability:** Good machining characteristics for a nickel alloy * **High Strength:** Maintains mechanical properties at elevated temperatures * **Versatile Applications:** Suitable for numerous industrial sectors * **Proven Reliability:** Extensive service history in critical applications * **Industry Compliance:** Meets major international standards * **Ready Availability:** Multiple sizes and conditions available * **Technical Support:** Comprehensive application engineering support Hastelloy C-276 rod provides manufacturers with a reliable, high-performance material solution for critical components operating in the most demanding corrosive environments, particularly in chemical processing, oil and gas, pollution control, and power generation industries where both corrosion resistance and mechanical integrity are essential requirements.

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 2028 gallon liquid totes Special package is available on request.