ISO 17872

Introducing ISO 17872 – Industrial Physics

ISO 17872 is an international ISO standard that guides the introduction of scribe marks through coatings on metallic panels that are used for corrosion testing. 

This ISO method details best practice methods of scribing coated steel or test-pieces for corrosion tests where the coating system is applied at dry film thicknesses of less than 500 μm. 

So what is a scribing test and why is it important? Scribing is a marking process that enables you to mark your metallic panels with text, logos or codes. It’s produced by a carbide or diamond tip that penetrates and indents the surface. A deep groove is created during the scribing test, forming continuous lines across concave, round, flat, or arched surfaces. 

More on ISO 17872 procedures

The ISO 17872 scribing test is only intended to be followed as a guideline. It’s based on the results of a collaborative trial, for which no subsequent corrosion testing is carried out to determine the suitability of the scribe marks for the test. 

You’ll find the ISO document covers the scribing of metallic panels or test pieces (chemically treated or not) made from: 

• Galvanized steel 
• Aluminum alloys 
• Magnesium alloys 
• Steel 

This scribe mark test doesn’t cover the scribing of electroplated metal or clad aluminum panels. 

ISO 17872 scribe testing devices 

So, how can Industrial Physics improve your ISO 17872 testing? 

Machu Scratching Tool 

Designed and built by TQC Sheen, our specialist paint testing brand, the machu scratching tool is great for corrosion testing and it complies with ISO 17872.  

The machu test works as a screening tool for rapid evaluations of coating products in all stages of research and development. Each tool is provided with a one millimeter width cutter to scribe the coating down to the metal. 

We make both basic and professional machu testing models that will make your scribe testing quick and easy. That’s a good thing as it’s a mandatory test in Qualicoat and QIB accredited laboratories. 

Click here to find out more.  

Your global test and measurement partner for ISO 17872