Hastelloy C276 Nicke Alloy Rod / Bright Round Bar Hastelloy H7 H9 H10 H11 Tolerance

More Specification Informations

Regular Diameter of Hastelloy C276 Round Bar in Stock 

Hastelloy C276 Nickel Alloy Rod / Bright Round Bar Hastelloy H7 H9 H10 H11 Tolerance

1. Key Parameters of Hastelloy C276 Nickel Alloy Rod / Bright Round Bar

1.1 Chemical Composition (Weight %)

1.2 Dimensional Parameters (H7, H9, H10, H11 Tolerances)

• Length: Standard lengths range from 1000mm to 6000mm; custom lengths (e.g., 500mm, 8000mm) are available upon request.
• Surface Finish: Bright round bars feature a smooth surface with a roughness (Ra) of ≤ 0.8μm, achieved via precision grinding or polishing, which reduces corrosion initiation points and improves aesthetics.

1.3 Mechanical Properties

2. Core Performance Advantages

2.1 Exceptional Corrosion Resistance

• Broad Media Compatibility: Resists most organic acids (e.g., acetic acid, formic acid), inorganic acids (e.g., hydrochloric acid, sulfuric acid below 60%), and chloride-rich environments (e.g., seawater, brine). It is also immune to pitting and crevice corrosion in chloride solutions (critical for offshore oil and gas equipment).
• High-Temperature Oxidation Resistance: Maintains stability in oxidizing atmospheres up to 1040°C, with minimal oxide scale formation (suitable for heat treatment furnaces and exhaust systems).

2.2 Thermal Stability

• Low thermal expansion coefficient (12.8 × 10⁻⁶/°C from 20°C to 1000°C), reducing thermal stress in cyclic temperature environments (e.g., heat exchangers, boiler tubes).
• Retains mechanical strength at elevated temperatures (up to 650°C for long-term use), avoiding deformation under load.

2.3 Good Processability

3. 相近牌号(Equivalent Grades)

4. Processing Services

4.1 Machining Services

• Precision Turning/Milling: Produces complex shapes (e.g., threaded rods, stepped shafts) with dimensional accuracy up to ±0.005mm, using high-speed steel (HSS) or carbide tools (coolant recommended to prevent overheating).
• Drilling/Tapping: Creates holes (φ1mm to φ50mm) and internal/external threads (e.g., M5, 1/4"-20 UNC) for fastener installation.
• Grinding: Achieves ultra-smooth surfaces (Ra ≤ 0.2μm) for high-precision components (e.g., valve cores, sensor probes).

4.2 Welding Services

• Welding Methods: TIG (Tungsten Inert Gas) welding is preferred for its low heat input and high weld quality; filler metals such as ERNiCrMo-4 (matching Hastelloy C276 composition) are used to ensure weld corrosion resistance.
• Post-Weld Treatment: Stress relief annealing (650°C for 1-2 hours) to eliminate residual welding stress and prevent stress corrosion cracking.

4.3 Surface Treatment Services

• Passivation: Forms a dense oxide film (using nitric acid solution) to enhance corrosion resistance, especially in acidic environments.
• Electroplating: Optional nickel or gold plating for applications requiring improved electrical conductivity (e.g., aerospace electrical components).
• Sandblasting: Creates a matte surface (Ra = 1.6-3.2μm) for applications where adhesion (e.g., painting, coating) is needed.

4.4 Cutting Services

• Custom Cutting: Provides precise length cutting (tolerance ±0.5mm) via sawing, laser cutting, or waterjet cutting, avoiding material deformation.

5. Other Hastelloy C276 Materials

6. Typical Application Fields

• Chemical Processing: Reactor rods, valve stems, pump shafts (resisting acid and alkali corrosion).
• Oil and Gas: Offshore platform structural rods, wellhead components (resisting seawater and chloride corrosion).
• Pharmaceuticals: Equipment shafts, mixer blades (meeting GMP standards for purity and corrosion resistance).
• Aerospace: Engine support rods, exhaust system components (withstanding high temperatures and oxidative atmospheres).
• Marine Engineering: Propeller shafts, seawater cooling system rods (resisting marine organism fouling and seawater corrosion).