265 .0002 .0005 .001 .015 .002 Harken Materials & Properties Clear-Anodized Clear aluminum anodizing is an electrochemical process that produces a corrosion- resistant finish. It also hardens the surface, making components less prone to scratches and dents. It is “clear” because the protective layer isn’t thick enough to change the color of the component (though dye can be added). More rigorous anodizing, such as hardcoat, can give components a black or colored hue. Delrin® Acetal Resin Black (white in older blocks) material which excels in small boat and low to moderate-load applications. Delrin® acetal resin is used for bearings, sheaves, and sideplates. Hardcoat-Anodized Hardcoat aluminum anodizing is an electrochemical process that produces a corrosion-resistant finish with hardness characteristics second only to diamonds. Harken's hardcoating process is twice as thick as black anodizing to provide extra protection against scratches, dents, superficial deformation, and corrosion. Nylatron® Nylon Durable, lightweight composite material that has high mechanical strength and stiffness, resists static electricity, and has excellent wear resistance. PTFE-Coated PTFE-coating, along with anodizing, protects aluminum against corrosion by sealing the surface from moisture. It also minimizes friction and gives the component better wear resistance. Stainless Steel 17-4 PH Stainless Steel: this alloy is used in gears because it is hardenable to extremely high strengths. 17-4 PH is more corrosion-resistant than any other standard hardenable stainless steel. 316 Stainless Steel: this is a nonhardenable alloy with high corrosion resistance in freshwater and saltwater. XM-19 Stainless Steel: this stainless is highly alloyed, with very high mechanical strength and superior corrosion resistance. Rods and pins in Harken cylinders are made of XM-19 stainless. Titanium This lightweight, hard metal has the highest strength-to-weight ratio of any metal. Its corrosion rate is so low that after 4000 years in seawater, corrosion would only have penetrated to the thickness of a thin sheet of paper. Harken uses titanium rollers in V blocks to handle bearing loads. Torlon® Thermoplastic Exceptionally strong crush/impact-resistant bearing material that withstands heavy long-term use and shock loading. Most Harken hardware that sees extreme loads uses greenish-brown Torlon® bearings. UV-Stabilized UV light photo-degrades composites by breaking their chemical bonds, leaving them weak, brittle, and discolored. This is common in equipment with white bearings. All Harken composites and bearings are naturally UV-resistant or use stabilizers like carbon black. Zirconia (Ceramic) Zircon bearings are more than 700% stronger in compression than stainless bearings of the same size. So, they won’t deform if used within the recommended load limits. For the same bearing sizes, ceramic withstands incredible compression loads, but beyond the limit, they tend to crush not flatten. Hardcoat-anodized Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates. Nylatron is a registered trademark of Quadrant EPP USA Inc. Torlon is a registered trademark of Solvay Advanced Polymers, L.L.C. Clear-anodized Not UV-stabilized UV-stabilized Torlon Zirconia (Ceramic) Delrin 6061-T6 Aluminum Anodizing Thickness Thickness range in inches Clear Black Harken hardcoat For complete listing, see www.harken.com/glossary
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