BS EN 12983-1 Pencil Hardness Test Apparatus For Exterior Organic
Coatings Test Scratch Resistance
Product overview:
The equipment is complied with BS EN 12983-1 clause 8.4.2 ,8.4.3
and Appendix K. The device uses the pencil nib to compare the
scratch resistance of the coating; Apply 4&8N pressure to the
pencil, insert the pen core into the hole where the hole is 45° ,
then the pencil nib completely touches the bottom coating of the
pot, and then draw a 2~5cm line on the coating; Judge the effect by
the lines drawn.
The pencil hardness test apparatus for exterior organic coatings is
a specialized device used to assess the hardness and scratch
resistance of coatings applied to exterior surfaces, such as
paints, varnishes, and protective coatings. The test determines the
ability of the coating to resist the penetration and scratching of
a pencil under controlled conditions. Here are the key features and
components typically found in a pencil hardness test apparatus:
Test Panel Holder: The apparatus includes a test panel holder that
securely holds the coated sample during the test. The holder
ensures proper positioning and stability of the panel to ensure
consistent and accurate results.
Pencil Holder: The pencil holder or clamp securely holds the pencil
in place during the test. It ensures that the pencil is at a
specified angle and is in contact with the coating surface during
the test.
Test Procedure Guide: The apparatus may include a test procedure
guide that provides instructions on how to conduct the pencil
hardness test correctly. It outlines the specific testing
parameters, such as the angle of the pencil, the applied force, and
the number of passes over the coating surface.
Force Application Mechanism: The apparatus incorporates a mechanism
to apply a controlled force on the pencil as it moves across the
coating surface. This mechanism ensures consistent force
application during the test, allowing for accurate comparisons
between different coatings.
Result Evaluation: After conducting the test, the apparatus enables
the evaluation of the test results. Typically, the test panel is
visually inspected for any visible scratches or marks caused by the
pencil. The hardness of the coating is determined based on the
pencil grade that produces the first visible scratch.
Data Recording and Analysis: The apparatus may have data recording
and analysis capabilities to document the test results. This can
include recording the pencil grade used, the observed scratches,
and any additional information relevant to the evaluation of the
coating's hardness.
The pencil hardness test apparatus is widely used in the coatings
industry to assess the scratch resistance and hardness of exterior
organic coatings. By subjecting the coating to controlled pencil
abrasion, this test helps manufacturers and quality control
departments evaluate the performance and durability of coatings
under real-world conditions. The test results aid in selecting
appropriate coatings for exterior applications and ensuring their
long-term protection and aesthetic appeal.
Technical parameters:
1. Power supply: AC220V, 50HZ
2. Test station: 1
3. Drive mode: electric + eccentric wheel mechanism
4. Test speed: 0-10 times/min, adjustable
5. Scratch length: 20~50mm, adjustable, default 25mm
6. Scratch angle:45 °
7. Heating platform DB-2EFS:RT+10°C~420°C±1°C, Platform
size:L450*W350mm
8. Test mass: one of each 4N, 8N.
9. Pencil: one of each HB,2H,3H,4H,5H.
10. Overall dimension:WDH=900×500×700mm, Maximum allowable sample
Ф400mm.
Main configuration list:
| No. | Content | Quantity | Unit |
| 1 | Scratch Resistance Tester | 1 | Set |
| 2 | Heating platform | 1 | Set |
| 3 | Test mass:4N, 8N | 1 | Set |
| 4 | Pencil | 1 | Set |
Operations steps:
1 Put the heating platform on the equipment, and power on it by
inset it’s plug to the socket on the equipment.
2 Put the sample cookware on the heating platform.
3 Put the sharpened pencil into the fixture with an included angle
of 45°, with the sharpened end facing the surface of the cookware,
and tighten the screw to fix the pencil.
