DIN 55656 testing

Introducing DIN - Industrial Physics 

 

For more information, please visit AJR.

DIN is a global DIN international standard for determining the scratch resistance of paints, varishings and coatings against scratching using a hand-held, loaded burin.  

Scratch hardness is defined as the hardness of a material when it is scratched by a stylus, dragged along its surface under a given load. 

Hardness testing gives you an idea of how well a coating will withstand scratches when it&#;s subjected to the kind of conditions it is likely to experience. It can also determine other properties of a coating, including adhesion, lubricity, resilience, as well as the influence of coating thickness and curing conditions. This can help you work out the optimal thickness and application conditions of your coatings to ensure the best possible performance.  

The DIN scratch hardness test

 

The DIN scratch hardness test can be performed with a ball burin spherical scribing tool (method A) or with a disk-shaped burin scribing tool (method B). 

Both scratch resistance testing methods are generally applicable - they can be used conveniently in the field and scratch hardness tests can even be used on curved surfaces. Method A is a good approach if you have smaller samples (minimum format 30mm × 50mm).  

The DIN scratch hardness test can be used as a pass-fail test (test requirement I) or as a classification test (test requirement II). 

Our DIN testing equipment

So, how can Industrial Physics improve your DIN scratch resistance testing?  

TQC Sheen Hardness Pen 

The TQC Hardness Pen is a pocket instrument for testing the hardness and wear/scratch resistance of materials such as coatings, lacquers or plastics. Our scratch testing hardness pens can be used on flat and curved surfaces and we make both standard and pro versions to choose from.  

For more information, please visit Pen Hardness Tester.

Our scratch testing hardness pens draw a tungsten carbide tip over a surface under test with a defined constant pressure. The pressure on the tip can be changed using the slide or by changing the spring.  

If a visual mark is left on the surface after you&#;ve used the TQC Hardness Pen then this indicates a failure of the surface hardness or wear/scratch resistance.  

Need DIN scratch testing solutions? Get in touch

We&#;ve learnt a thing or two about scratch testing over the decades. Now Industrial Physics is recognized as a brand that likes to bring hardness pens and hardness testers to market. 

We like to share our knowledge and we&#;re here to help you to answer your questions about scratch testing. Across the knowledgebase section of our website we publish lots of blogs on related subjects.   

For example, please have a read of this piece which tells you how to protect your coating performance with scratch hardness testing. Then maybe follow up with this piece which explores the crucial role of hardness testing polymers and plastic materials. 

If you have any questions about DIN and how we can help you with your scratch hardness testing, then please just get in touch!

Contact us - Industrial Physics

Your global test and inspection partner for DIN  

I believe most people buy the wrong system or are sold the wrong system. Do the tests and have Ohio Pure Water (I trust them completely) specify a system or make sure your system is the right one. Assuming you're comfortable with plumbing, OPW ships the equipment to your door about 40%/50% cheaper than plumbing suppliers and will give you lifetime Q&A. And it's sized right and the rght equipment for your issues based on the water test. I've put in a few of their (Fleck) systems. They always help me when I need it (except weekends, holidays)

This is a good test kit, no lab fees.
This is the same kit sold by Ohio Pure Water but half the price at HD



Side note:  If you aren't getting a salty taste in your water

and

if the salt in the brine tank is dissolving and needing replacement, your control valve and brine valve are good. If salt is dissolving

and

you're getting salty water, your control valve is bad. If salt isn't dissolving or the brine tank water is dingy, your brine valve is bad or the float valve isn't working or the discharge hose is kinked or clogged or the venturi jet is clogged or the filter screen is clogged. Not sure which system you have but they are easy fixes with Fleck equipment. Often times, only need cleaning.

The plastic beads in the tank also don't last forever. If everything is working correctly and still getting hard water, your system is sized incorrectly or the resin media beads in the resin tank are shot. The resin media beads don't last forever.

imho, "hardness" aka "mineral" tests are only a small part of the equation. Why not test it for everything. I see a lot of people buying water softeners without testing the water for all that ails it. Iron, ph, bacteria, other contaminants, flow rate etc are just a few issues. Water tests are cheap might as well know everything about it. You really should know your flow rate (GPM) to make sure the softener is properly sized. Do that by placing a 5 gal bucket at the lowest tap in the house and time how long it takes to fill. Divide minutes by 5 gallon to get flow rate. Make sure yu do this in front of the softener, not after or put your softener in bypass mode if there are no faucets/hose-bibs in front of the softener. Hopefully a basement laundry/utility sink or even an outdoor hose bib. Don't use a shower, kitchen or sink faucet as they are generally metered to be no more than 2.5 gpm. If you want to know if the system is softening, check hardness in front and behind the system.I believe most people buy the wrong system or are sold the wrong system. Do the tests and have Ohio Pure Water (I trust them completely) specify a system or make sure your system is the right one. Assuming you're comfortable with plumbing, OPW ships the equipment to your door about 40%/50% cheaper than plumbing suppliers and will give you lifetime Q&A. And it's sized right and the rght equipment for your issues based on the water test. I've put in a few of their (Fleck) systems. They always help me when I need it (except weekends, holidays)This is a good test kit, no lab fees.Side note: If you aren't getting a salty taste in your waterif the salt in the brine tank is dissolving and needing replacement, your control valve and brine valve are good. If salt is dissolvingyou're getting salty water, your control valve is bad. If salt isn't dissolving or the brine tank water is dingy, your brine valve is bad or the float valve isn't working or the discharge hose is kinked or clogged or the venturi jet is clogged or the filter screen is clogged. Not sure which system you have but they are easy fixes with Fleck equipment. Often times, only need cleaning.The plastic beads in the tank also don't last forever. If everything is working correctly and still getting hard water, your system is sized incorrectly or the resin media beads in the resin tank are shot. The resin media beads don't last forever.

Are you interested in learning more about Ultrasonic Hardness Tester? Contact us today to secure an expert consultation!