High-Performance Hastelloy C276 Nickel Alloy Pipe with Molybdenum ≥16% and Reduction of Area 40% min

High-Performance Nickel Alloy Pipes for Your Industrial Requirements

HC-276, commonly referred to as Hastelloy C-276, is a nickel-based superalloy celebrated for its exceptional corrosion resistance and robust performance across extreme environments. Below is a structured and detailed overview:

Chemical Composition

• Acids: Withstands strong reducing acids (e.g., sulfuric, hydrochloric, hydrofluoric) and mixed acids (e.g., sulfuric-hydrochloric blends), even at high concentrations and temperatures. For example, in 20% boiling hydrochloric acid, its annual corrosion rate is ≤0.1 mm/year, far outperforming 316L stainless steel.
• Chlorides: Resists pitting and crevice corrosion in chloride-rich solutions (e.g., seawater, brines) due to a high Pitting Resistance Equivalent Number (PREN ≈ 76).
• Alkalis: Performs well in concentrated alkaline solutions (e.g., sodium hydroxide) at moderate temperatures.
• Oxidizing Environments: Chromium content ensures stability in oxidizing media (e.g., nitric acid, hypochlorites) and high-temperature oxidation.
• Stress Corrosion Cracking (SCC): Shows minimal susceptibility to SCC in chloride or sulfide environments, a critical advantage over many stainless steels.

Fabrication and Processing

• Forming: Cold working (e.g., bending, rolling) is feasible but may require intermediate annealing to restore ductility. Hot working is performed at 1,040–1,175°C (1,900–2,150°F).
• Welding: Can be welded using processes like TIG (GTAW) or MIG (GMAW) with matching filler metals (e.g., ERNiCrMo-4). Post-weld annealing is not required due to low carbon content, simplifying processing.
• Machining: Machinability is moderate; tools with high-speed steel or carbide inserts are recommended, with coolants to prevent overheating.

Applications

• Chemical Processing: Reaction vessels, heat exchangers, and pipelines handling acids, solvents, and reactive chemicals.
• Oil & Gas: Downhole equipment, subsea pipelines, and offshore platforms exposed to brines, sulfides, and high pressures.
• Environmental Engineering: Flue gas desulfurization systems (FGD) and wastewater treatment equipment.
• Pharmaceuticals: Cleanroom components and reactor systems requiring high purity and resistance to sanitizing agents.
• Aerospace & Energy: Components in gas turbines and industrial furnaces operating at elevated temperatures.

Standards and Specifications

• ASTM B575 (sheet, plate, strip)
• ASTM B574 (bars, rods, forgings)
• ASME Section VIII (pressure vessel code)
• ISO 15156 (for oilfield equipment in sour service).

Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.

We have complete advanced technology facilities to produce best quality alloys to meet exacting your specifications such as VIM (Vacuum lnduction Melting) furnace to provide high purity Alloys,ESR (Electro Slag Re-melting) furnace to enhances the structure and purity of the Alloys, and CNC machining equipments (Lathe, Wire cutting, Drilling,Milling) to provide high precision finished products.

We are dedicated to providing our customers with best quality products,fastest possible deliveries, most competitive prices of Nickel Based Corrosion Resistant and High Temperature alloys in bars,rods,forged flanges, valve parts, forged shapes (shafts, discs, blocks, hubs,rings, cylinders and tailor shapes) according to ASTM,ASME,API,AMS, NACE and other industry standards.

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