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Physical Testing of LMM-6000 Laser Marks
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Laser marks were made
on type 304
stainless steel tags using LMM-6000 and a CO2 Laser.
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Marks were made at settings of 100%
power, 12% speed, 500 DPI on a
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35 watt Universal Laser.
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Tags were totally immersed
in the test solutions.
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Exposure Time
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Organic Solvents
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1 Hour
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12 Hours
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24 Hours
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1 Week
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Gasoline
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No effect
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No effect
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No effect
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No effect
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Limonene
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No effect
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No effect
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No effect
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No effect
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Methyl Ethyl Ketone
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No effect
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No effect
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No effect
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No effect
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N-Butanol
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No effect
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No effect
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No effect
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No effect
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Mineral Spirits
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No effect
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No effect
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No effect
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No effect
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Xylene
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No effect
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No effect
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No effect
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No effect
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Acetone
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No effect
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No effect
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No effect
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No effect
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Propylene Carbonate
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No effect
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No effect
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No effect
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No effect
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Ethanol
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No effect
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No effect
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No effect
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No effect
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DMSO
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No effect
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No effect
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No effect
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No effect
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Motor Oil
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No effect
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No effect
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No effect
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No effect
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Acid/Bases
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Hydrochloric Acid 35%
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No effect
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No effect
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Test stopped - see notes
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Nitric Acid 68%
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No effect
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No effect
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No effect
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No effect
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Sulfuric Acid (conc.)
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No effect
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No effect
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No effect
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No effect
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Acetic Acid 99.5%
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No effect
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No effect
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No effect
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No effect
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Hydrogrn Peroxide 30%
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No effect
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No effect
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No effect
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No effect
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Sodium Hydroxide 25%
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No effect
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No effect
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No effect
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No effect
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Ammonium Hydroxide 20%
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No effect
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No effect
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No effect
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No effect
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Other
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Boiling H2O
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Marks soaked in boiling water for 1
hr. - no effect
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LN2 (Cold)
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Marks dipped in liquid nitrogen - no
effect
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Flame (Hot)
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Marks heated in a propane flame until
cherry red - metal
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discolors, no effect on mark.
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Hot/Cold Cycling
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Marks heated red hot and immediately
plunged in liquid nitrogen
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- metal discolors, no effect on mark
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Notes:
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Hydrochloric acid testing:
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- Acid dissolves the steel tag and
was not run over 12 hrs. long
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- After 1 hr. acid dissolved 0.2767
gms off of steel tag (4.7%),
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laser mark was unaffected.
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- After 12 hrs. acid dissolved 1.8057
gms off of steel tag (30.6%),
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laser mark was unaffected, now having
a distinctly raised feel.
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Sulfuric acid testing:
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- Acid discolors at approximately 96
hrs., mark appears to be
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slightly discolored.
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