Hastelloy C22 alloy products
Material Family / Hastelloy

Hastelloy C22

Ni-Cr-Mo-W alloy with superior oxidizing media resistance and better weldability than C-276.

Introduction

§01 — General

Hastelloy C22 is a nickel-chromium-molybdenum-tungsten alloy offering superior resistance to oxidizing media and exceptional weldability. It is the upgraded alternative to C-276 in applications requiring resistance to both oxidizing and reducing environments, particularly in flue gas desulfurization (FGD) systems and pharmaceutical processing.

Cross-Reference

UNS: UNS N06022
Series: Hastelloy
Density: 8.69 g/cm³
Max Temp: 600°C
Standards: ASME Section VIII · ASTM B574 · ASTM B575 · NACE MR0175

Quick Facts

UNS
N06022
Density
8.69 g/cm³
Max Service Temp
600°C
Series
Hastelloy

Available Product Forms

§02 — Forms
ForgingWireFlangeBar & RodPlate & SheetPipe & Tube

Key Characteristics

§03 — Features
Superior oxidizing media resistance
Better weldability than C-276
Resists pitting and crevice corrosion
ASME pressure vessel approved
Excellent in mixed acid environments

Typical Uses

§04 — Applications
Flue gas desulfurization (FGD) scrubbers
Pharmaceutical processing equipment
Chemical reactor vessels
Pulp and paper bleach plants
Waste treatment systems

Frequently Asked Questions

Hastelloy C22 FAQ

What is Hastelloy C22 used for?

Hastelloy C22 is a Hastelloy alloy used in Flue gas desulfurization (FGD) scrubbers, Pharmaceutical processing equipment, Chemical reactor vessels. It offers Superior oxidizing media resistance and Better weldability than C-276.

What is the chemical composition of Hastelloy C22?

Hastelloy C22 is a controlled-composition Hastelloy alloy supplied to ASME Section VIII and ASTM B574. We provide the full mill test certificate with heat-specific chemistry on request.

What forms is Hastelloy C22 available in?

Hastelloy C22 is regularly supplied in Forging, Wire, Flange, Bar & Rod, Plate & Sheet, Pipe & Tube. Custom forms and dimensions available on request.

What is the maximum service temperature of Hastelloy C22?

Hastelloy C22 is rated for service up to 600°C. Contact our metallurgy team for specific application recommendations.

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