Stainless Steel Tags
When we mark stainless steel tag, we use a metal marking compound LMM-6000 manufactured by Ferro.
Physical Testing of LMM-6000 Laser Marks
Click here to see the original data provided by Ferro
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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 flatbed plotter style 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 |
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No effect |
No effect |
No effect |
No effect |
| Limonene |
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No effect |
No effect |
No effect |
No effect |
| Methyl Ethyl Ketone |
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No effect |
No effect |
No effect |
No effect |
| N-Butanol |
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No effect |
No effect |
No effect |
No effect |
| Mineral Spirits |
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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 |
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No effect |
No effect |
No effect |
No effect |
| Motor Oil |
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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% |
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No effect |
No effect |
No effect |
No effect |
| Hydrogrn Peroxide 30% |
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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 |
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discolors, no effect on mark. |
| 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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