Hastelloy C22 (UNS N06022) Nickel Alloy Round Bar: Premium Ni-Cr-Mo-W Bar for Oxidizing & Reducing Acid, Chloride Pitting and Wet Chlorine Service

Hastelloy C22 (UNS N06022) Nickel Alloy Round Bar

UNS N06022 Hastelloy C22 round bar is a nickel-chromium-molybdenum-tungsten wrought alloy, upgraded from Hastelloy C276 with higher chromium content. It offers excellent corrosion resistance in both oxidizing and reducing media, superior resistance to chloride pitting, crevice corrosion and stress corrosion cracking, combined with good ductility and weldability for severe chemical service. It is particularly suitable for agitator shafts, valve stems, fasteners and precision machined corrosion-resistant components.

Key Features and Advantages

• Higher chromium than C276, outstanding resistance to oxidizing acids, wet chlorine and hypochlorite.

• Excellent resistance to chloride pitting, crevice corrosion and SCC.

• Stable corrosion performance in mixed acid and multi-component corrosive environments.

• Good ductility, fabricability and excellent weldability, no post-weld heat treatment required.

• Low carbon, minimises intermetallic precipitation during welding.

Typical Applications

• Chemical reactor internals, agitator shafts and mixing components.

• Wet chlorine, bleach and chlorine dioxide bleaching equipment (pulp & paper).

• Pharmaceutical API synthesis vessels and clean process fittings.

• Flue gas desulfurization scrubber internals.

• Nitric / mixed acid process equipment, ferric chloride leaching systems.

• Seawater, brine and high chloride corrosive service parts.
• Valve stems, pump shafts, fasteners and instrument components for harsh corrosion service.

Technical Specifications

• Product Name: Hastelloy C22 Round Bar

• Material Designation: UNS N06022

• Werkstoff Number: 2.4602

• Alloy Family: Nickel-Chromium-Molybdenum-Tungsten Alloy

• Product Form: Round Bar / Rod

• Reference Standard: ASTM B574, subject to confirmation of product applicability and delivery requirements

• Diameter: Available according to manufacturing capability and customer requirements

• Length: Standard or custom lengths, subject to availability

• Surface Condition: As agreed in the purchase specification

• Inspection Documents: Material test certificates and inspection reports, as agreed

Quality Assurance

Products can be supplied according to agreed specifications, with chemical composition verification, mechanical testing, dimensional inspection, surface examination, and material traceability where required. Material certificates and additional inspection documentation are available according to the purchase order and applicable product requirements.

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