Hard to believe that any coating that can be scratched/damaged with any pencil would be worth using. I wonder if Cerakote can be tested with this method. That's some very slick and very durable stuff. I do worry that the pencil test might not be as repeatable as it may seem, because the tips are sharpened by hand, and sharper edges are significantly more destructive than any edges that might be more dull. Like, I've seen on many occasions surfaces that could easily handle a sharp edge of a knife... but the moment a jagged/damaged knife edge is against it, the damage is significant. (Also, if the pencils are different from manufacturer to manufacturer, than how can a "pencil hardness score" be given? Wouldn't companies always want to use the company with the softest pencils, so they can boast a stronger product and higher score?)
Hi, Thank you for your comment. We developed this kit to adhere to strict ASTM and ISO standards - ASTM D 3363 - ISO 15184:2012 Coating hardness can vary drastically. From extremely soft coatings, all the way to extremely hard coatings. This test method has been established in the industry for many years and can be suitable for a wide range of coatings. However, many more test methods do exist such as the Elcometer 3092, 3000, and 3095. If you have any further questions, please get in touch at support@elcometer.com
Hi. How to determine whether the test is considered as Pass or fail? For example, I need to do test for 4H, then after test done, there is a plastic deformation (6mm), so is this considered as Fail? Please advise. Thank you for the video!
Hi, As per the instructions, the user increases the hardness of the pencil until one or both of the following defects mark the coating: 1. Plastic deformation; a permanent indentation in the paint surface without cohesive fracture. 2. Cohesive fracture; the presence of a visible scratch or rupture in the surface of the paint film, material having been removed from the paint film. If you have any further questions, please get in touch @techsales@elcometer.com
Hi, This would depend on the extent to which you are testing it to. Typically it will leave, at the very least, a witness mark. For further information, please get in touch at techsales@elcometer.com
Thank you for your comment. Please refer to the technical data sheet for the coating you are using to check what the drying time is before performing a pencil hardness test. If you have any further questions, please contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
Thank you for your comment. As the test is designed to scratch the surface of the coating, the thickness of the coating is not relevant. For more information please contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
ASTM D3363 and ISO 15184 both state the thickness of the coating shall be as specified or as agreed upon between the interested parties, which is cross-referenced in the NACE CIP Training and Certification Manual Level 2. If you are able to quote exactly where you found the 250micron reference we will be able to investigate this further.
@@ElcometerOfficialChannel thank you for you respect and reasonable answer.. have i any doubt i ask to you? Because i try to move nace level 3. Thank you
You're welcome, we are happy to help! If you have any further questions please don't hesitate to contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
Clear and informative, no waffle.
Very interesting and thanks guys !
Hard to believe that any coating that can be scratched/damaged with any pencil would be worth using. I wonder if Cerakote can be tested with this method. That's some very slick and very durable stuff. I do worry that the pencil test might not be as repeatable as it may seem, because the tips are sharpened by hand, and sharper edges are significantly more destructive than any edges that might be more dull. Like, I've seen on many occasions surfaces that could easily handle a sharp edge of a knife... but the moment a jagged/damaged knife edge is against it, the damage is significant. (Also, if the pencils are different from manufacturer to manufacturer, than how can a "pencil hardness score" be given? Wouldn't companies always want to use the company with the softest pencils, so they can boast a stronger product and higher score?)
Hi,
Thank you for your comment. We developed this kit to adhere to strict ASTM and ISO standards
- ASTM D 3363
- ISO 15184:2012
Coating hardness can vary drastically. From extremely soft coatings, all the way to extremely hard coatings. This test method has been established in the industry for many years and can be suitable for a wide range of coatings.
However, many more test methods do exist such as the Elcometer 3092, 3000, and 3095.
If you have any further questions, please get in touch at support@elcometer.com
Hi. How to determine whether the test is considered as Pass or fail?
For example, I need to do test for 4H, then after test done, there is a plastic deformation (6mm), so is this considered as Fail? Please advise. Thank you for the video!
Hi,
As per the instructions, the user increases the hardness of the pencil until one or both of the following defects mark the coating:
1. Plastic deformation; a permanent indentation in the paint surface without cohesive fracture.
2. Cohesive fracture; the presence of a visible scratch or rupture in the surface of the paint film, material having been removed from the paint film.
If you have any further questions, please get in touch @techsales@elcometer.com
thanks for like this video,
Is it a destructive test or non ?
Hi,
This would depend on the extent to which you are testing it to. Typically it will leave, at the very least, a witness mark.
For further information, please get in touch at techsales@elcometer.com
Sir, After painting What's the aging time to check pencil hardness
Thank you for your comment.
Please refer to the technical data sheet for the coating you are using to check what the drying time is before performing a pencil hardness test.
If you have any further questions, please contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
How many thickness we can do the test?..
Thank you for your comment.
As the test is designed to scratch the surface of the coating, the thickness of the coating is not relevant.
For more information please contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
@@ElcometerOfficialChannel But nace manual mentioned 250microns only used this test
ASTM D3363 and ISO 15184 both state the thickness of the coating shall be as specified or as agreed upon between the interested parties, which is cross-referenced in the NACE CIP Training and Certification Manual Level 2.
If you are able to quote exactly where you found the 250micron reference we will be able to investigate this further.
@@ElcometerOfficialChannel thank you for you respect and reasonable answer.. have i any doubt i ask to you? Because i try to move nace level 3. Thank you
You're welcome, we are happy to help!
If you have any further questions please don't hesitate to contact techsales@elcometer.com or visit www.elcometer.com/contact-us to find your local Elcometer distributor.
Super video
Mantap