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Pencil hardness of coating

Product Knowledge Standard Term FAQ
Pencil hardness refers to the ability of the coating surface to resist scratches from pencils or Miscellaneous hard objects. Pencil hardness is usually assessed by using a pencil Hardness Tester, applying a certain force and angle to the coating surface, and then observing whether scratches, damage or breakage occur.

Pencil hardness of coating Testing instrument

Pencil hardness is a method of testing the pencil scratch resistance performance of a coating to evaluate the durability of the coating. The test method involves using pencils of different hardness grades to perform scratch testing on the coating surface, and then determining the pencil hardness of the coating based on the depth and Appearance of the scratch to evaluate its performance and service life.
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Pencil hardness of coating Application Articles

Analysis of hardness measurement by ASTM D3363 pencil method
Pencil Hardness Tester test procedure, application and different Hardness Pencil introduction
Pencil hardness tester is a device that determines coating or surface Hardness by measuring coating resistance to pencil scratches of different Hardness.
Pencil hardness testing of film
Film pencil Hardness is a commonly used film physical performance test method to evaluate the Hardness and wear resistance performance of coating films. During the test, pencils with different Hardness are used to scratch the coating surface to determine the Hardness grade of the coating according to the Hardness of the pencil.
Ceramic Coated Pencil Hardness Test
The pencil hardness test is just one of many tests used to evaluate coatings. The hardest is 10H, followed by 9H, 8H, 7H, 6H, 5H, 4H, 3H, 2H and H. F is the middle of the hardness scale; then HB, B, 2B, 3B, 4B, 5B, 6B, 7B, 8B and 9B, which are the softest.
What is a pencil hardness test?
Pencil hardness testing is an evaluation method used to determine the hardness of a material (usually a coating material). In order to perform a pencil hardness test, graphite pencils of different hardness move on the coated surface. Its hardness relative to graphite pencils depends on the softest pencil, which leaves scratches on the coated surface.
Pencil Hardness Tester tests the hardness of water-based wood coatings
Paint hardness reflects the ability of a coating to resist constant indentation, scraping, scratching and penetration caused by a hard object.
Test Optical Film UV Curing Hard Coating with Pencil Hardness Tester
In recent years, various optical parts based on polyester film (PET) have been widely used due to the development of raw materials and processing technology. PET materials have excellent properties, and their good mechanical properties, heat resistance and high transmittance are superior to many other materials.
Selection scheme of common performance testing instruments for architectural paints
This is a testing instrument scheme selected by users of new materials for architectural coatings for paint performance testing, including coating thickness measurement, fineness detection, paint film impact, pencil hardness tester, and Stormer viscometer.
How does the Purson Combined Pencil Hardness Tester test the hardness of the coating?
Pushen combined pencil hardness tester is a trolley type pencil hardness tester, which is used to test the hardness of paint film coatings. This article introduces its specific operation method for testing the hardness of coatings in detail.
Test method of pencil Hardness Tester and its common problems
In the coating industry, hardness refers to the ability of a given coating surface to resist scratches, abrasions or gouging. The film industry has used pencil hardness measurements for many years to determine the scratch hardness of a particular coating film.
Analysis of Pencil Hardness Test Coating Hardness
"Pencil Hardness" is a simple test that tells you the hardness of the coating you are using. This article is about pencil hardness testing coating hardness.
Pencil Hardness Tester measurement of coating Hardness
The pencil Hardness grades used in different countries are different. My country's national standard GB6739-86 "Film Hardness Pencil Determination Method" stipulates that the pencils used are 13 grades from 6H to 6B, 6H is the hardest and 6B is the softest. As an instrument test method for arbitration tests, the general instrument model has QHQ pencil method scratch Hardness instrument.
Pencil Hardness Testing of Modified Graphite Nanosheet Coating
The pencil Hardness test of the modified graphite nanosheet coating shows that the content of the modified graphite nanosheet is too low or too high will not improve the Hardness of the film. Because the bonding force between the graphite nanosheet layers is weak and relatively soft, the Hardness of the coating will decrease when the content is too high.
A Foreigner's Understanding of Coat Hardness
A translation of a foreigner's understanding of coat Hardness, which talks about Mohs Hardness and Pencil Hardness Test Wolff-Wilborn
Pencil Hardness Test for Coating Films
Pencil Hardness measurement has been used by the film industry for many years to determine the scratch Hardness of a particular coated film. The Pencil Hardness Wolff-Wilborn test is fairly simple, but results may vary depending on the equipment and procedures used for the test. Every effort should be made to standardize tests, equipment and techniques to obtain comparable results.

Pencil hardness of coating Relevant standards

ActiveGB/T 45593-2025
Fine ceramics—Determination of the abrasion resistance of coatings by micro-scale abrasion test
ActiveGB/Z 45463-2025
Method for porosity measurement of thermally sprayed coatings
ActiveASTM D3393-91(2022)
Standard Specification for Coated Fabrics—Waterproofness
ActiveTAPPI TIP 0304-73
Checking for coating wear on corrugating rolls
ActiveTAPPI T 702
Rheological measurements for characterization of polyolefins: low-density polyethylene (LDPE) for extrusion coating
ActiveTAPPI T 549
Coefficients of static and kinetic friction of uncoated writing and printing paper by use of the horizontal plane method
ActiveASTM D5162-21
Standard Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating on Metallic Substrates
ActiveASTM D6676/D6676M-21
Standard Test Method for Cathodic Disbonding of Exterior Pipeline Coatings at Elevated Temperatures Using Interior Heating
ActiveASTM D6182-23
Standard Test Method for Flexibility and Adhesion of Finish on Leather
ActiveASTM D7835/D7835M-23
Standard Test Method for Determining the Solvent Resistance of an Organic Coating Using a Mechanical Rubbing Machine
ActiveISO 5470-2
Rubber or Plastics Coated Fabrics - Determination of Abrasion Resistance - Part 2: Martindale Abrader
ActiveASTM D6132-13
Standard Test Method for Nondestructive Measurement of Dry Film Thickness of Applied Organic Coatings Using an Ultrasonic Coating Thickness Gage
ActiveASTM B689-97
Standard Specification for Electroplated Engineering Nickel Coatings
ActiveASTM C461-23
Standard Test Methods for Mastics and Coatings Used With Thermal Insulation
ActiveASTM A950/A950M-11(2023)
Standard Specification for Fusion-Bonded Epoxy-Coated Structural Steel H-Piles and Sheet Piling

Pencil hardness of coating Instrument terminology

Pencil hardness of coating Testing FAQ