Tufram

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.

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
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
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
HTR High Temperature Release on aluminum parts temperatures up to 1,400°F (760°C) YES
TNS Excellent release of adhesives and hot melt glues on aluminum surfaces NO
R66LT Low temperature properties include excellent chemical resistance on aluminum parts in pH ranges from 2 to 13 NO
R66LTH Excellent chemical resistance on aluminum parts from solvents and other environments in pH ranges from 2 to 13 NO
Ratings are meant for reference only. For specific application recommendations contact the General Magnaplate technical staff.

Ideal applications

  • Threaded members and other close tolerance components
  • Mold release applications
  • Vacuum systems requiring non-outgassing components
  • Guide rails
  • Wafer chucks
  • Turbines
  • Nip rollers