HELPFUL MARKING TIPS SERIES: High Contrast Marking on Stainless Steel using Chemical Etching

High Contrast Marking on Stainless Steel using Chemical Etching

One of the most common materials to Electro-Chemically Etch is Stainless Steels. It’s used for so many products from Medial Appliances and Food Preparation Equipment to Pressure Vessels and Nuclear Hardware etc.
One of the things we are asked for most often is how to create a high contrast BLACK permanent image on Stainless. Well for a very long time it’s been quite easy to get a good high contrast marking on Stainless steel and there are many Electrolytic Solutions that can help you obtain these results. However, Millennium Signatures X4R-428 Electrolyte Solution is unique in this area. Unlike the brown coloured markings, you tend to get with other formulations, our X4R-428 Electrolyte delivers a Black result that has definitely impressed those who have long been searching for a better result in this area. This Electrolyte can be used with any of our Power Units or Electro-Chemical Marking Kits.
Commonly sold in 1-Litre Bottles
Also available in 5-Lite Containers. 
Contact the Part Marking Specialists at Millennium Signatures Marking Systems by phone at (905) 639-0909 or by e-mail at for more information. MSDS Documentation is available for all Electrolyte and Neutralizer Products
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HELPFUL MARKING TIPS SERIES: Electro-Chemical Etching of Titanium

Electro-Chemical Etching of Titanium

“When chemically etching information on Titanium, less is often more…”

For the best Electro-Chemical Etch results on Titanium, use Millennium Signatures Electrolyte Formulation
X4R-416 at a Medium to High Power Setting in the DC Output Mode on most Power Units. A good Deep Etch Power Unit is ideal for optimal results. Getting a high contrast light surface mark on Titanium can be challenging, if your specs will accommodate, it’s actually easier to get a very sharp crisp marking by etching down a couple thousandths of an inch (0.002”) or 0.051mm which is easily achieved with a few very quick, light applications of the hand marker as not to generate too much heat. 
Give the surface a very quick light scuff with a Scotch Brito abrasive type pad and you should have a beautiful, razor sharp, high contrast etch which is often easily mistaken for a laser quality marking.

Remember to keep your Monopad very damp with the X4R-416 Electrolyte Formulation, but not dripping all over your part and workstation. Too much heat can be the enemy when marking most metals, this is especially true when marking Titanium.
Use Standard Neutralizer or our Extra Strength X4R-900 Neutralizer to thoroughly clean the areas that came in contact with the electrolyte. 
Results may vary slightly when using different grades of Titanium, but these tips typically serve well on all Titanium Etching Applications. A good ground connection in close proximity to the area you’re marking is always important.

For more information on the best Electro-Chemical Etching Equipment, Accessories and Supplies for a given application, be sure to check our other HELPFUL MARKING TIPS SERIES Blogs and posts on Facebook, Instagram and LinkedIn as well as at our Website:
Contact our Part Marking Specialists at (905) 639-0909 or by e-mail at

This Helpful Marking Tip was brought to you by Jeff Guenther of Millennium Signatures Marking Systems Inc.

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