Hard Anodized Coatings

Enhanced protection for aluminum components

Tufram® coatings for aluminum far outperform conventional hard anodizing and similar processes when it comes to corrosion resistance, friction reduction and hardness.

Resists Corrosion. Tufram coatings are highly resistant to corrosion as well as acids and alkaline chemicals. In salt spray testing, for example, Tufram on high strength aluminum exceeds the AMS 2482 requirement of 336 hours. Submersion tests in strong acids at 248ºF show no effect after more than 170 hours.

Reduces Friction. Tufram's low coefficient of friction protects against a wide variety of abrasive wear mechanisms and galling. It also reduces stick-slip behavior and the resulting vibrations in sliding motion applications.

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Improves Hardness. Tufram dramatically improves the surface hardness of aluminum—to levels comparable with case hardened steel or hard chrome plate.

Replaces more expensive substrates. Tufram not only improves the performance and durability of aluminum components but often allows easily machinable aluminum to replace steel or stainless in many applications.

Technical advantages

Tufram's properties surpass those of all conventional aluminum coatings—including hard anodize, polymer impregnated hard anodize, hardcoat anodize and sulfuric anodize. Tufram's property advantages include:

An operating temperature range from -360°F (-218°C) to as 800°F (+427°C)
Excellent thermal conductivity
Surface hardness between Rc 40 and Rc 65
Thickness range: 0.0004" to 0.003"
Low coefficient of friction
High dielectric strength
Self-lubricating and non-wetting surface characteristics

Absence of outgassing
Compliance with industry standards, including:
- AMS 2469 and AMS 2482
- USDA and FDA
- Automotive end of vehicle life (ELV) initiatives
- REACH

Type	Description	Wear	Corrosion	Lubricity	Anti-Stick	Temperature	USDA and FDA
L-4	Minimizes stick and slip						NO
H2	Maximum hardness Rc 60-65						NO
H+	Maintains maximum hardness, corrosion resistance and lubricity for high strength aluminum						NO
10K3	Wear and corrosion resistant coating providing release up to 850F						YES
HO	Hardness of Rc 40 to 50, wear resistant, dry lubricated surface on aluminum with good release. Compliant with USDA and FDA codes						YES
R66F	Black. Good aluminum mold and sealing surface release. USDA approved and FDA compliant						YES
R66LT	Low temperature properties include excellent chemical resistance on aluminum parts in pH ranges from 2 to 13						NO
SLK	Enhanced with improved anti-stick and designed to provide similar properties to HO on aluminum						YES
FC12	Special combination of polymers and dry lubricants allow low COF on aluminum						NO
TNS	Excellent release of adhesives and hot melt glues on aluminum surfaces						NO
Ratings are meant for reference only. For specific application recommendations contact the General Magnaplate technical staff.