Injection and Extrusion Barrel Materials

Tool Steel Barrels

For Injection, Extrusion, Thermoset and Blow Molding Applications                                                            

MATERIAL OPTIONS:

D-2 Tool Steel - Our most popular D-2 Tool Steel sleeve has been very successful in most molding applications including moderate concentrations of glass or mineral filled materials. One of the most wear resistant of the conventional tool steels, it is alloyed with 12% chromium and 1% vanadium which form very hard carbides. This high percentage of chromium gives it mild corrosion resisting properties in the hardened condition. D-2 Tool Steel is thru-hardened to maximize its wear life.

CPM®-15V™ Tool Steel - Crucible's CPM®-15V™ Tool Steel is the newest in the family of high vanadium, highly abrasion resistant CPM® tool steels. It contains more hard vanadium carbides (14.5%) in its microstructure than CPM®-10V, to provide even higher wear resistance. CPM®-15V™ is intended for applications requiring exceptional wear resistance and where CPM®-10V is successful, but even longer life is desired.

Bi-Metallic Barrels

For Injection, Extrusion, Thermoset and Blow Molding Applications

MATERIAL OPTIONS:

777 Super Wear Bi-metallic - Our super wear-resistant bi-metallic liner is a high tungsten-carbide content alloy with a matrix of a chromium-boron-nickel alloy. Tungsten carbide provides the primary wear resistance with the high chromium boride-content matrix alloy providing additional wear and corrosion resistance. 777 has a macro hardness of Rockwell C62-68; however, over 80% volume of this alloy is occupied by tungsten carbides and chromium borides which show a micro hardness of over DPH 4000 (over Rc 70). It is the highest wear- and corrosion-resistant alloy available for bi-metallic barrels. 777 is recommended for use where extremely abrasive and moderately corrosive conditions are encountered, or in custom shops where a machine is used to process several different kinds of material.

666 Standard Bi-metallic - Our standard wear resistant bi-metallic liner is a nickel-boron-based iron with a high hardness, martensitic structure in cementite matrix. It has excellent abrasion resistance and a low friction coefficient (0.07) for prevention of screw galling. It provides a service life of at least four times that of nitrided barrels, and a hardness range of Rockwell C58-65 (70°F). Recommended for use when abrasive materials are being processed.

555 Corrosion-Resistant Bi-metallic - Our corrosion-resistant bi-metallic liner is a cobalt-nickel based alloy with high chromium and boron content for excellent corrosion resistance against hydrochloric and other acids. It has a dual-phase microstructure with complex borides that provide excellent wear resistance: over 10 times the service life of nitrided barrels in severely corrosive atmospheres. It has a typical hardness range of Rockwell C50-55. Recommended for use where severe corrosive conditions are encountered.