Harald Pihl

Alloy C 22 (UNS N06022/W.Nr. 2.4602) has, by virtue of its contents of chromium, molybdenum, tungsten and controlled iron, excellent resistance to both oxidizing and reducing acid environments as well aas those containing mixed acids. It is particularly useful for resistance to pitting and crevice corrosion in acid-halide environments. Applications include the chemical processing, pollution control, flue gas desulfurization, waste incineration and pulp and paper processing industries.

Alloy C 276 (UNS N10276/W.Nr. 2.4819) is known for its corrosion resistance in a wide range of aggressive media. The high molybdenum content imparts resistance to localized corrosion such as pitting. The low carbon minimizes carbide precipitation during welding to maintain resistance to intergranular attack in heat-affected zones of welded joints. It is used in chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment and the recovery of “sour” natural gas. Applications in air pollution control include stack liners, ducts, dampers, scrubbers, stack-gas re-heaters, fans and fan housings. In chemical processing, the alloy is used for components including heat exchangers, reaction vessels, evaporators and transfer piping.

UNS N02200, W.Nr. 2.4060 and 2.4066

UNS N02201, W.Nr. 2.4061 and 2.4068

AWS A5.14 ERNi-1, UNS N02061, W.Nr. 2.4155