Nordson Xaloy’s X220™ Iron-Chromium Alloy Outperforms Standard General-Purpose Inlays

A bimetallic barrel alloy with enhanced resistance to corrosive and abrasive wear extends the working life of extrusion and injection molding barrels in general-purpose applications and provides greater assurance of product quality and consistency, it was announced today by Nordson Xaloy Europe, which will feature the technology at Fakuma 2014 (Hall A6, Stand 6404).

The key to the corrosion resistance of the X220™ alloy is its higher chromium content relative to other barrel inlays for general-purpose use—double the chromium content of Nordson Xaloy’s own X200™ inlay and greater than the standard alloy in Europe. The new inlay also exhibits greater hardness: 64 to 69 on the Rockwell HRC scale, as against 58 to 65 for the X200.

In acid immersion tests of sample weight loss, X220 alloy exhibited a 55% improvement over other European alloys in sulfuric acid and a 44% improvement in hydrochloric acid (see graphs). “The new X220 inlay improves productivity and product quality through better screw-to-barrel fit, reduces downtime, and prolongs the working life of the barrel,” said David Hotchkiss, global product manager.

A bimetallic inlay is a high-hardness alloy that lines the inner wall of the barrel. As general-purpose inlays, the iron-based X200 and the iron-chromium-based X220 can be used with a wide range of polyolefin, styrenic, and other resins at filler loadings up to 15%. For vinyls, certain fluoropolymers, and other potentially corrosive resins, Nordson Xaloy supplies the X306® nickel-cobalt alloy. The tungsten carbide / nickel-based alloy X800® provides exceptional wear and corrosion resistance for highly filled resins and high-temperature engineering polymers.

Source: Nordson