Technical Coatings at MACHFINISH- Engineering Specifications:
Aluminum Pigmented Coatings
Originally developed under MIL-L-85614 for aerospace fasteners, our aluminum pigmented coatings are designed to meet rigorous military and industry standards. While the original specifications focused on installation force and corrosion resistance, modern applications have evolved. Today, our coatings conform to NAS 4006 standards, prioritizing galvanic protection for a wide range of fasteners without compromising on performance—even under extreme conditions. These coatings ensure operational reliability up to a maximum curing temperature of 425°F.
Solid Film Lubricants (Dry Film Lubricants)
Our solid film lubricants excel in reducing friction without the need for liquid lubrication, performing reliably across high temperatures where traditional oils falter. Compliant with AS5272 and MIL-PRF-46010 standards, these coatings are pivotal in applications ranging from aerospace thread surfaces to industrial bearings. Available in three types:
• Type I: Quick-curing at 275°F-329°F, designed for robust endurance with a minimum life of 250 minutes.
• Type II: High-temperature resilience, curing within an hour at 375°F-427°F, with extended endurance of 450 minutes.
• Type III: Low VOC content, offering flexibility in curing times and temperatures while maintaining a wear life of 450 minutes.
Epoxy Primers
Our epoxy primers provide unmatched corrosion resistance and chemical robustness without the need for external solvents or heat. Available in various formulations:
• MIL-PRF-23377: High-solids content for maximal efficiency and lower VOC emissions.
• MIL-PRF-85582: Waterborne technology ensuring lower environmental impact without sacrificing performance.
• BMS 10-11: Tailored for diverse application techniques, including both standard and electrostatic spray methods.
Cetyl Alcohol Solutions (AS87132)
Ideal for assembly operations, our cetyl alcohol solutions serve as effective lubricants for mechanical fasteners. These solutions help prevent galling and facilitate easier installation, particularly suitable for sensitive metal alloys and painted surfaces. Offered in both petroleum-based and water-based formulas, these solutions are available in multiple grades to match specific application needs, ensuring optimal performance and compatibility.
Classification:
The lubricant is classified in two types with grades as specified herein. Type I is the traditional classification and Type III is applied when environmentally necessary.
Type I – Petroleum Base Solvent
- Grade A: 30 to 90 grams of cetyl alcohol per liter (0.25 to 0.75 pound per gallon) of solvent.
- Grade B: 120 to 150 grams of cetyl alcohol per liter (1.00 to 1.25 pounds per gallon) of solvent.
- Grade C: 270 to 300 grams of cetyl alcohol per liter (2.25 to 2.60 pounds per gallon) of solvent.
Type III – Water Base Solvent
- Grade A: 10 to 30 grams (0.08 to 0.25 pound per gallon) cetyl alcohol per liter of deionized water.
- Grade B: 30 to 60 grams (0.25 to 0.50 pound per gallon) cetyl alcohol per liter of deionized water.
- Grade C: 60 to 100 grams (0.50 to 0.83 pound per gallon) cetyl alcohol per liter of deionized water.
Intended Use:
Cetyl alcohol, also called hexadecanol, is a white, crystalline, odorless, and noncorrosive and is compatible with fats, fatty acids, waxes, and petroleum oils. It is soluble in light petroleum base solvents and water. Cetyl alcohol is a nontoxic, non-irritating, and otherwise innocuous material; however, when dissolved in a petroleum base solvent, care should be taken in handling and storage because of the relatively low flash point of the dissolved mixture, attributed to the petroleum base solvent. It is intended for use as a lubricating coating to promote the installation of fasteners as follows:
- Grade A: Collars, nuts, and washers.
- Grade B: Pins, bolts, externally threaded parts, and noninterference fit fasteners.
- Grade C: Interference fit fasteners, internally threaded parts, and parts requiring heavy lubricant coating.