Page 7 - Harken

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 Clear-anodized
Hardcoat-Anodized
Hardcoat aluminum anodizing is an electrochemical process that produces a 6061-T6 Aluminum Anodizing Thickness
corrosion-resistant finish with hardness characteristics second only to diamonds.
Harken's hardcoating process is twice as thick as black anodizing to provide extra Clear Thickness range
protection against scratches, dents, superficial deformation, and corrosion. in inches
Black
Hard Lube-Anodized
Hard Lube-anodized aluminum includes all the corrosion-resistant properties Harken hardcoat
of hardcoat-anodized aluminum with the additional benefits of a PTFE coating
for a smoother surface and reduced friction. .001 .015 .002
Nylatron Nylon .0002 .0005
®
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. Delrin
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. Torlon
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.

Not UV-stabilized UV-stabilized

For complete listing, see www.harken.com/glossary
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.
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