Introduction

Hastelloy C-4 Alloy (also Hastelloy C4 Alloy, Alloy C-4, Nickel Alloy C-4, UNS N06455 Alloy, W.Nr. 2.4610 Alloy) is a nickel‑chromium‑molybdenum alloy designed for exceptional thermal stability and outstanding weldability. It conforms to ASTM B575 (plate/sheet), ASTM B619 (welded pipe), ASTM B622 (seamless pipe/tube), and ASTM B574 (bar), as well as ASME SB575. This nickel alloy UNS N06455 offers superior resistance to heat‑affected zone (HAZ) attack after welding, making it ideal for welded structures and equipment exposed to high temperatures and corrosive environments.

Key properties of Hastelloy C-4:

• Excellent thermal stability – maintains microstructure and corrosion resistance after prolonged exposure to elevated temperatures

• Superior weldability – no susceptibility to grain boundary precipitation; can be used in as‑welded condition for many applications

• High temperature corrosion resistance – effective up to 1900°F (1040°C)

• Chloride resistant alloy – excellent resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC)

• Oxidizing and reducing atmosphere resistance – handles both types of corrosive media

• Metallurgical stability alloy – resistant to sigma phase formation and intergranular attack

This corrosion resistant nickel alloy is available in all product forms: Hastelloy C-4 Plate, Pipe, Tube, Bar, Sheet, and Forging. Our industrial corrosion resistant alloy materials are supplied in hot rolled plate, cold rolled sheet, seamless/welded pipe & tube, round bar, and custom sizes with pickled or polished surfaces. Our product range includes Hastelloy C-4 seamless pipe, welded pipe, plate (6mm, 10mm, etc.), sheet 4x8, round bar (50mm, etc.), tube, and fabricated components.

Specifications & Process Options

We provide Hastelloy C-4 Size Chart, Thickness Chart, Weight Chart, and Tube Dimensions – request yours.

Applications

1. Chemical Processing Equipment & Pickling Plants

• Hastelloy C-4 for chemical processing equipment – reactor shells, distillation columns, piping systems, and vessel internals. Superior weldability nickel alloy allows fabrication of large, complex structures without post‑weld heat treatment.

• Hastelloy C-4 for pickling plants – pickling tanks, heating coils, and acid recovery systems in steel pickling lines (hydrochloric, sulfuric, nitric‑hydrofluoric acid mixtures). High temperature corrosion resistance extends equipment life under cyclic thermal conditions.

• Hastelloy C-4 for reactor vessels – batch and continuous reactors handling chlorinated organics, mixed acids, and aggressive catalysts. Metallurgical stability alloy prevents intergranular corrosion after welding.

2. Wet Chlorine & Chlorine Processing

• Hastelloy C-4 for wet chlorine systems – piping, heat exchangers, and chlorine dryer components in chlor‑alkali plants. Chloride resistant alloy withstands wet chlorine gas, hypochlorite, and chlorine dioxide without pitting.

• Hastelloy C-4 for chlorine processing – chlorine liquefaction equipment, evaporators, and storage tank linings. Excellent thermal stability ensures safe operation under fluctuating temperatures.

3. Heat Exchangers & FGD Systems

• Hastelloy C-4 for heat exchangers – shell‑and‑tube and plate heat exchangers for corrosive fluids, including sulfuric acid coolers and waste heat recovery units. Heat affected zone resistance prevents preferential attack at tube‑to‑tubesheet welds.

• Hastelloy C-4 for flue gas desulfurization – absorber tower internal components, reheaters, and duct expansion joints. Oxidizing atmosphere resistance and chloride resistance combined.

4. Pharmaceutical Equipment & Waste Treatment

• Hastelloy C-4 for pharmaceutical equipment – API reactor vessels, crystallizers, and purification columns where product purity demands corrosion‑free surfaces. Stress corrosion cracking resistance meets GMP standards.

• Hastelloy C-4 for waste treatment plants – hazardous waste incinerator scrubbers, landfill leachate evaporators, and acid neutralization tanks. Corrosion resistant welded structures with long service life.

5. Pollution Control & High Temperature Service

• Hastelloy C-4 for pollution control systems – flue gas reheater plates, stack liners, and quench nozzles. Reducing atmosphere resistance effective in oxygen‑deficient conditions.

• Welded structure nickel alloy – ideal for fabrications requiring high integrity welds without sensitization.

Why Choose Us as Your Hastelloy C-4 Supplier?

We are a reliable Hastelloy C-4 supplier, Alloy C-4 stockist, UNS N06455 supplier, nickel alloy C-4 exporter, Hastelloy C-4 material supplier, industrial corrosion resistant alloy provider, and China Hastelloy C-4 factory. All products meet ASTM B575 / B619 / B622 / B574 with mill test certificates, chemical analysis, mechanical property reports, and NDT as required.

What we offer:

• Complete product forms: Plate, Sheet, Pipe, Tube, Bar, Forging

• Plate thickness: 3mm – 50mm (standard and custom)

• Pipe sizes: 1/2″ to 12″ NPS, SCH40, SCH80

• Bar diameters: 6mm – 200mm

• Surface finishes: pickled, polished, bright annealed

• Services: cut to size, precision grinding, component fabrication

• Certifications: EN 10204 3.1, PMI, full traceability

• Global shipping: Exporter to chemical plants, pharmaceutical equipment manufacturers, pickling plants worldwide

Contact us for Hastelloy C-4 Size Chart, Thickness Chart, Weight Chart, or a quote on Hastelloy C-4 Plate 6mm, 10mm, Sheet 4x8, Pipe SCH40/SCH80, Round Bar 50mm, or custom requirements.

MONO Group is one of Hastelloy C276 plate and other Superalloy, Nickel alloy, High Temperature Alloy Manufacturer, Supplier, Wholesaler from China, We can supply high quality alloy plate, sheet, round bar, tube, pipes, fittings, flange, and custom parts in accordance with ASTM, ASME, DIN, ISO, GB and other international standards. For inquiries or to request a quote, please freely contact us at info@monokj.com.