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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 |
| 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 |
12 Hours |
24 Hours |
1 Week |
| Gasoline |
|
No effect |
No effect |
No effect |
No effect |
| Limonene |
|
No effect |
No effect |
No effect |
No effect |
| Methyl
Ethyl Ketone |
|
No effect |
No effect |
No effect |
No effect |
| N-Butanol |
|
No effect |
No effect |
No effect |
No effect |
| Mineral
Spirits |
|
No effect |
No effect |
No effect |
No effect |
| Xylene |
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No effect |
No effect |
No effect |
No effect |
| Acetone |
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No effect |
No effect |
No effect |
No effect |
| Propylene
Carbonate |
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No effect |
No effect |
No effect |
No effect |
| Ethanol |
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No effect |
No effect |
No effect |
No effect |
| DMSO |
|
No effect |
No effect |
No effect |
No effect |
| Motor
Oil |
|
No effect |
No effect |
No effect |
No effect |
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| Acid/Bases |
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| Hydrochloric
Acid 35% |
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No effect |
No effect |
Test stopped - see notes |
| Nitric
Acid 68% |
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No effect |
No effect |
No effect |
No effect |
| Sulfuric
Acid (conc.) |
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No effect |
No effect |
No effect |
No effect |
| Acetic
Acid 99.5% |
|
No effect |
No effect |
No effect |
No effect |
| Hydrogrn
Peroxide 30% |
|
No effect |
No effect |
No effect |
No effect |
| Sodium
Hydroxide 25% |
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No effect |
No effect |
No effect |
No effect |
| Ammonium
Hydroxide 20% |
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No effect |
No effect |
No effect |
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 |
| LN2
(Cold) |
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Marks dipped in liquid
nitrogen - no effect |
| Flame
(Hot) |
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Marks heated in a propane
flame until cherry red - metal |
|
discolors, no effect on
mark. |
| Hot/Cold
Cycling |
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Marks
heated red hot and immediately plunged in liquid nitrogen |
|
-
metal discolors, no effect on mark |
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| Notes: |
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| Hydrochloric
acid testing: |
|
-
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. |