How to Specify Dicronite® | Instructions & Considerations

How to Specify Dicronite

Once you determine your system or component is optimized by adding Dicronite® WS2 coating, it is simple to specify it on your engineering drawings. Using annotations, note surfaces where Dicronite® DL-5® dry lubrication is required. If you require that some areas must remain clean of Dicronite®, designate where no coating is allowed. Technicians will mask off those areas and they will not be coated. Similarly, you can designate that overspray is permissible.

The aerospace specification for Dicronite® DL-5®, tungsten disulfide coating is SAE AMS 2530 (this specification supersedes DoD-L-85645). If you require this specification, annotate “Coat with Dicronite® DL-5® per SAE AMS2530” to the required area.

The following are some common considerations when choosing to specify Dicronite® on your application:

    • Dicronite® will not interfere with precision tolerances. The technology and carefully controlled application process results in Dicronite® dry lubrication’s 0.5 microns (0.000020”) maximum thickness.

 

    • The Dicronite® application process will not subject the substrate to heat stress or distortion. It is applied between 20C (68F) and 35C (95F).

 

    • Dicronite® is a modified tungsten disulfide and can be used with other lubricants.

 

    • Beyond its very low coefficient of friction, Dicronite® dry lubrication provides some wear reduction, particularly wear due to fretting or galling. It is not intended as a replacement for hard coatings typically used in very high wear situations.

 

    • Dicronite® does not alter the electrical or magnetic properties of the substrate.

 

    • Dicronite® dry lubrication functions over a temperature range of -188°C (–350°F) to +538°C (+l000°F) and up to +1316°C (+2400°F) in a vacuum.

 

    • Dicronite® is biocompatible; it has been tested and complies with ISO-10993-5 and United States Pharmacopoeia (USP) Class 6.

 

    • Dicronite® WS2 has been approved for use in food handling and processing equipment. Application specific approvals have been received from both the United States Food and Drug Administration (US-FDA) and the United States Department of Agriculture (USDA).

 

    • Dicronite® dry lubrication can be applied to steel, aluminum and plastic molds, basically any ferrous or nonferrous metallic substrate. It is also commonly applied on top of other coatings such TiN, CrN, CrC or Nickel.

 

    • The Dicronite® WS2 coating does not affect the surface finish of the substrate. Being maximum 0.5 micron’s thick, the film reflects the underlying surface finish.

 

    • Dicronite® can be applied in soft – soft, soft – hard, hard – hard, or any other variation with another coating.

 

    • There is no minimum surface finish for the substrate to accept Dicronite® dry lubrication.

 

    • Dicronite® dry lubrication will change the surface color to either a soft grey or grey tint depending on the underlying surface color.

 

    • You can apply Dicronite® DL-5 to holes, inside diameters and inside surfaces. Generally, there is a depth limitation of two times the diameter. For larger diameters, it may be possible to apply to a greater depth.

 

    • Dicronite® dry lubrication can be re-applied over itself with some preparation of the substrate by a licensed application facility.

 

    • Dicronite® dry lubrication can be applied in quick turnaround situations. Typical lead-time is between one and four days, exclusive of any transport.

 

    • You do not need to specially prepare the surface prior to application of Dicronite® dry lubrication. It is important to ensure the parts are free of oil and grease as much as possible.

 

    • Dicronite® tungsten disulfide coating should generally be the final step in manufacturing. Any other surface processes (e.g. passivation, anodizing, polishing) should be completed prior to the Dicronite® dry lubrication process.

 

    • We often coat samples or test parts at little or no cost to help customers determine how Dicronite® WS2 will perform in their system. Please contact us at [email protected] for details.

 

    • After coating, part surfaces should be kept clean and dry, other than co-lubricants, prior to final assembly.

 

    • There are no environmental or health and safety considerations after Dicronite® dry lubrication has been applied. The material is inert and non-toxic.

 

    • All licensed locations offer the same Dicronite® dry lubrication process; however, they are independently owned and operated. Each facility offers their own pricing, lead times, administrative policies, and quality certifications.

 

If you have any questions regarding the application or specification of Dicronite® DL-5® for your mechanical processes, please contact us at [email protected] or visit www.Dicronite.com for more technical information.

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Sliding Wear

Sliding wear occurs when two surfaces slide against one another causing material loss to one or both surfaces. Over time, this can result in component failures, additional maintenance, and costly down time.  

Coating components with Dicronite® can help minimize this wear and reduce the need for maintenance and down time.

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Tight Tolerance Lubrication

Extremely tight tolerances can present challenges when lubricants or coatings are needed to reduce friction. Many products are available to help reduce friction, but in the case of very tight tolerances, few can be integrated without the need for adjustments.

Dicronite® has an average thickness of 0.5 microns (0.00002 inch) or less. This precision thin film allows users to incorporate Dicronite® on designs with tight tolerances without the need for design or manufacturing changes.

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Vacuum Environment Lubrication

Vacuum environments present a challenge for lubrication. Many conventional lubricants aren’t effective under vacuum and are largely vaporized.

Dicronite® can be used in vacuum to reduce friction where other lubricants can’t function. The outgassing of Dicronite® under vacuum conditions is well below screening levels for spacecraft materials per ASTM E595.

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Energy Lost to Friction

Friction is wasted energy! Systems with critical mechanical power output need to be extremely efficient.

Dicronite® optimizes mechanical efficiency by reducing friction losses and can even work in tandem with existing lubrication to further optimize efficiency.

Dicronite® is especially useful in precision systems, extreme environments, or where minimizing size and weight is vital.

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Fretting

Fretting is a unique form of sliding wear that occurs when contact surfaces oscillate over a very small range of motion. Although it may seem minor, this surface wear can ultimately lead to fatigue cracking and devastating damage.

Dicronite® helps remedy fretting by providing lubrication at contact surfaces. This effectively reduces the wear and surface stresses that cause so much damage.

Dicronite® can be integrated into existing designs and assemblies without any other adjustments for seamless reduction of fretting wear.

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Extreme Temperature Lubrication

Extreme low or high temperatures can be challenging environments for lubrication. At low temperatures, conventional lubricants may be too viscous to be effective, while extreme high temperatures can result in breakdown of the lubricant.

Dicronite can be used in extreme environments to ensure effective lubrication while also being used in combination with oils and greases.

Dicronite is stable across a wide temperature range:

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Excessive Heat from Friction

As friction in an assembly generates heat, elevated temperatures can result in unwanted operating conditions.

This can cause overheating and accelerate the breakdown of materials, resulting in costly maintenance and down time or destructive failure.

Proper lubrication can help minimize friction, reduce heat, and increase mechanical efficiency. Coat parts with Dicronite® to avoid excessive maintenance and ensure components will run as efficiently as possible.

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