LMM-6000, a CerMark™ product, is one of two general purpose laser marking compounds recommended for creating black marks on a variety of standard metals. LMM-6000 has been specially designed to dry in a hard coat which can be handled prior to laser marking without rubbing off. This allows parts coated with LMM-6000 to be stored, moved or stacked prior to laser marking. If you are interested specifically in marking stainless steel, you should choose LMM-6000, as it makes the darkest marks on this substrate. However, the process window for LMM-6000 is narrower, so if ease of use is a concern, LMM-14 may be more applicable and its performance on stainless are very similar to LMM-6000.
CerMark™ Substrate List
►Stainless Steel - Bright Annealed
Lasers that work:
LMM-6000 works equally well with CO2 and solid state lasers.
LMM-6000 requires different dilution ratios depending on your desired application.
- Air Brush Application: Ratio of 1:3 (1 part in volume of LMM-6000, 3 parts in volume of denatured alcohol) is recommended. Please refer to your air brush manual for information about material thickness for your model type.
- Foam Brush (hand) Application: Ratio of 1:2 (1 part in volume of LMM-6000, 2 parts in volume of denatured alcohol) is recommended.
Please make sure the marking surface is free and clear of oils, cleaning agent films, dust, and lacquer coating before applying CerMark™ to ensure best marking results.
- Aerosol Application: Shake the aerosol can thoroughly before use to achieve a homogenous suspension of marking material inside the can. When applying LMM-6000 from an aerosol can, the resulting coating of LMM-6000 should be 0.8-1 mil thick (20-25 μm). Spray uniformly at a 10” distance from the surface and move the nozzle from one side to the other covering the whole substrate area. Start spraying away from the area to be marked and move towards the opposite side and past the target area. Over-spraying before and after the target area allows constant velocity of movement and will help provide an even coating on the substrate. Make sure the bare metal is not visible underneath. If necessary spray one or two more times. In general 1-2 strokes are enough to generate the desired coating.
- Air Brush Application: When airbrushing use the above mentioned procedure for aerosol application.
- Foam Brush (hand) Application: When hand applying LMM-6000 the resulting coating of LMM-6000 should be 0.8-1 mil thick (20-25 μm). Use about a 1” wide foam brush and soak less than ¼” of the brush with LMM-6000. Increased brush soaking is not necessary, otherwise the ink may splash and result in an uneven coat thickness. Apply with smooth, even strokes. Note: Aerosol and air brush application are both preferred over foam brush applications. Even coating of laser marking material can be challenging to achieve for optimal marks when using a foam brush. We only recommend foam brush application if you do not have an air brush or are coating a small surface area.
Drying Time & Methods:
If left to air dry, LMM-6000 is normally fully dry within 3 to 5 minutes. If air drying takes too long, however, a hair drier or forced air heater may be used to speed up the process. LMM-6000 can be fully dried with an average household hair dryer in less than 15 sec.
Power and speed are the two most important variables to control when using CermMark™ laser marking materials with any laser, but there are other relevant variables depending on which laser you are using, such as length of lens, PPI, DPI, frequency, or hatch spacing.
LMM-6000 is yellowish/tan in color and has the consistency of thick pancake batter. It should not separate upon standing, but it is still advisable to shake or stir LMM-6000 prior to use.
Once applied to the substrate and dry, LMM-6000 will be a yellowish/tan paint-like coating.
- All LMM-6000 products (aerosol and ink) are considered by the US Department of Transportation (DOT) to be “ORM-D” or “Consumer Commodity”. These products may be shipped via ground or air. LJS does not add any additional charges for ground shipping of this product, but LMM-6000 is subject to an additional $40 hazardous materials packing fee if shipped via air. This is due to regulations around the shipping of pressurized cans and alcohol-based chemicals on airplanes.
- Overnight Shipping of LMM-6000 is not available!
- LJS Ships all Metal Marking Compound (LMM-6000 and LMM-14) via FedEx Ground unless otherwise indicated.
All LMM-6000 products should be stored between 40ºF (5ºC) and 95ºF (35ºC) in a dark, dry place. Aerosol cans should be stored on their side rather than their bottom, as the LMM-6000 material can settle and clump together inside the can. Side storage allows for even dispersion upon shaking.
LMM-6000 is an alcohol-based material. After laser bonding, any excess, un-bonded material can be washed off the substrate and down the drain into your normal water/sewer waste area. Note: Using hot water and rubbing the substrate surface with rubber or latex gloves works the best with regard to cleaning parts/materials after laser processing.
Unused aerosol cans that are still pressurized should be de-pressurized in a well-ventilated area (the propellants should be completely expelled from the can) and disposed of in your regular trash and solid waste area.
Unused containers of liquid ink/paste should be opened, the alcohol base evaporated into a well-ventilated area, and once only solids remain in the container, the container with solids can be safely disposed of in your regular trash and solid waste area.
LMM-6000 CerMark Mediums
||12 oz aerosol
up to 1,200 sq/in
|~$.06 per sq/in
||50 gm paste ink
up to 1,000 sq/in
|~$.055 per sq/in
||250 gm paste ink
up to 5,000 sq/in
|~$.029 per sq/in
||500 gm paste ink
up to 10,000 sq/in
|~$.025 per sq/in
||1,000 gm paste ink
up to 20,000 sq/in
|~$.022 per sq/in