Hastelloy C-276 / C2000 / C-22 Columns

Roben, Mfg., Inc. specializes in the custom engineering and fabrication of hastelloy c-276, c2000, c-22 for chemical, fine chemical, petrochemical, pharmaceutical, food and beverage, defense, and power-generation industries. Every project is designed to ASME Section VIII Division 1 (with optional Division 2), is National Board registered, complies with the European Pressure Equipment Directive (PED 2014/68/EU) for CE marking, and is registered under the Canadian Registration Number (CRN) system for all Canadian provinces.

What Hastelloy C-276, C2000, C-22 Are

Hastelloy is a family of nickel-molybdenum-chromium alloys with outstanding resistance to a wide range of corrosive media, especially mixed acids and hot chlorides. The C-family — C-276, C-22, C-2000 — represents the most widely used grades in chemical and petrochemical service.

Why Hastelloy C-276, C2000, C-22 Matter

When a process contains mixed oxidizing and reducing acids, hot chlorides, wet chlorine, or hypochlorites, Hastelloy is often the only practical material. It is used in flue-gas desulfurization (FGD), nuclear waste handling, pharmaceutical reactors, and chemical synthesis where corrosion control is paramount.

Hastelloy C-276, C2000, C-22 — Specifications and Capabilities

C-276 (UNS N10276) — broadest mixed-acid resistance

C-22 (UNS N06022) — improved oxidizing-acid resistance vs C-276

C-2000 (UNS N06200) — best all-around resistance, including hot chlorides

ASME VIII Div. 1: Approved (Section II Part D)

Welding: GTAW and SMAW with ENiCrMo-4 / ERNiCrMo-4 (C-276) or matching fillers

Forms: Plate, pipe, forgings, fittings

Certifications and Codes

ASME Section VIII Division 1 — U-stamp

ASME Section VIII Division 2 — available on request

National Board registration — R-stamp

PED 2014/68/EU — CE marking with Notified Body coordination

CRN — registered for all Canadian provinces

NACE MR0175 / ISO 15156 — sour-service compliance

AWS D1.1 / ASME Section IX — qualified welding procedures and welders

Frequently Asked Questions About Hastelloy C-276, C2000, C-22

What is the difference between Hastelloy C-276, C-22, and C-2000?

C-276 is the original C-family alloy with broad mixed-acid resistance. C-22 has higher chromium for better oxidizing-acid (nitric, ferric chloride) resistance. C-2000 has the best all-around performance, including improved resistance to sulfuric acid and hot chlorides.

What services require Hastelloy?

Flue-gas desulfurization (FGD) absorbers, pharmaceutical reactors with mixed acids, hypochlorite handling, hot chloride brines, wet chlorine, organic chloride processes, and nuclear waste handling.

What is the cost premium for Hastelloy vs. stainless steel?

Hastelloy is typically 6–10× the cost of 316L. For most services, clad construction (Hastelloy-clad steel) provides the corrosion performance at a fraction of the solid-alloy cost.

What welding process does Roben Mfg. use on Hastelloy?

GTAW for root and thin sections, SMAW or GTAW for fill, with matching ENiCrMo-4 / ERNiCrMo-4 (C-276), ENiCrMo-10 (C-22), or matching consumables. ASME Section IX qualifications are in place for all C-family grades.

Can Roben Mfg. supply solid-Hastelloy or clad-Hastelloy columns?

Both. Solid-Hastelloy columns for the most demanding services (typically smaller diameters), or Hastelloy-clad steel for larger columns where the cost premium of solid alloy is prohibitive.

Request a Quote on This Project

Contact Roben Mfg., Inc. to discuss your project specifications, timeline, and material requirements.

📞 (732) 364-6000 ✉ sales@robenmfg.com 📍 760 Vassar Ave, Lakewood, NJ 08701

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Hastelloy C-276, C2000, C-22 Column Fabrication