Varnish Pencil Hardness Tester

The varnish pencil hardness tester determines the hardness of a coating by using a standard hardness pencil to scratch the coating surface at a fixed angle and pressure, based on whether scratches are produced. It is used to evaluate the scratch resistance of surfaces such as varnishes and paints, and to verify the mechanical properties of coatings in quality inspection and research and development.
Selection
When selecting, consider the compatibility with testing standards and confirm that the instrument's range covers the hardness range of the sample being tested. Check the stability of the pencil clamping structure and ensure that the weight of the pressure block complies with specifications. The operation interface should be user-friendly, and a calibration certificate should be included to ensure data reliability.
type
Load weight
Substrate Hardness
Film shape
Measurement certificate

Terms

Standards

Instruments

The 45 ° fixed angle design is adopted to ensure that the cylindrical pencil lead maintains a constant angle and pressure, the load is 500g, the error is +/- 10g, and the coating Hardness level is determined by the minimum Hardness value pencil trace.

$ 162.00

The three-point contact design ensures that the pencil and the test surface always maintain a 45 ° angle, the standard 6B-6H pencil covers the complete Hardness range, the mechanical structure is easy and reliable to operate, and it is suitable for a variety of coating hardness testing needs.

$ 146.00

Hand crank type is easy to operate, load 1000g +/- 1g, scratch speed about 1mm/s, test angle 45 °, standard 6B-6H pencil, in line with a number of international standards, through the pencil Hardness grade to accurately evaluate the scratch performance of the paint film.

$ 325.00

The pencil scratch method is used to test film Hardness, and the three-point contact design always guarantees a 45 ° angle, which meets the GB6379 standard and is suitable for film Hardness detection in laboratories and construction sites.

$ 138.00

Adopt four-link mechanism to ensure a constant 45 ° test angle, equipped with 500/750/1000g adjustable load, accurately determine film Hardness through different Hardness pencil scratches, meeting standard test Environmental requirements.

$ 307.00

The 45 ° fixed angle design ensures precise application of 1000g constant pressure, coating marks are evaluated by 13 different Hardness pencil systems, and the four-link mechanism ensures test Stability.

$ 396.00

Using 45 ° fixed angle design, ensure that the cylindrical pencil lead scratches the coating with constant pressure, the load is 750g, the error is +/- 10g, and the coating grade is determined by the minimum trace Hardness value.

$ 162.00

Made of stainless steel to ensure wear resistance and corrosion resistance, 750g test load to meet a variety of international standards, equipped with a complete pencil set for accurate coating Hardness assessment.

$ 1881.00

Hand type easy to operate, load 1000g, standard 6B-6H pencil, suitable for film hardness testing, test temperature 23 +/- 2 ℃ and Humidity 50 +/- 5% environment.

$ 341.00

Three-point contact design ensures 45 ° stability testing angle, equipped with 6B-6H pencil and 500g to 1000g adjustable load, manual push to achieve accurate film Hardness identification.

$ 162.00

Adopt 45 ° test angle and adjustable load system, the test platform traverse speed 0.5-10 mm/s adjustable, equipped with LCD display real-time monitoring, to meet the needs of accurate coating Hardness detection.

$ 619.00

The four-bar structure ensures a constant 45 ° test angle, is equipped with a three-speed test load and a standard Chinese pencil set, and the test bench supports multi-directional movement of 120x80mm samples, allowing scratch detection to be completed in any direction.

$ 283.00

With a 45 ° test angle and an adjustable speed of 5mm/sec, equipped with a 500g weight and a standard pencil set, stable and low-noise electric control is achieved through a stepper motor.

$ 477.00

The 45 ° fixed angle design ensures that the cylindrical pencil lead maintains a constant angle and pressure; equipped with two additional weights to achieve three loads, the load error is controlled within +/- 10g, and 14 Mitsubishi UNI pencils are standard.

$ 206.00

Using two-wheel and refill three-point contact structure, refill and test surface to maintain an angle of 45 degrees, equipped with 1000g weight, by pushing the Tester to accurately determine the film Hardness value, easy and reliable operation.

$ 164.00

Articles

Pencil hardness tester rapidly evaluates scratch resistance of paint film.
This article introduces how to quickly assess the scratch resistance of paint films using a pencil hardness tester. During the test, standard pencils (ranging from 6B to 9H) are used to scratch the coating at a fixed angle and pressure to observe whether scratches occur.
Pencil Hardness Tester for Rapid Evaluation of Coating Surface Hardness
The pencil hardness tester is a tool used for rapidly assessing the relative hardness of coating surfaces through standardized scratch tests. It employs a series of pencil leads with known hardness levels, which are drawn across the coating under a fixed load and angle. The hardness grade, ranging from 6B to 9H, is determined based on whether a permanent scratch is produced.
Drop Ball Method of Impact Testing Machine for Evaluating the Impact Resistance of Varnish
This article introduces the use of the falling ball method with an impact testing machine to assess the impact resistance of varnish. The method involves dropping a steel ball of specified weight from a predetermined height onto a test panel coated with varnish to observe whether the coating cracks or peels off, thereby evaluating its impact resistance.
Wet film thickness gauge measures the wet film thickness of varnish.
The wet film thickness gauge is a mechanical tool used to measure the thickness of liquid varnish coatings. It operates by rolling the gauge so that the tips of its teeth contact the substrate and leave marks. The thickness value is then obtained by the operator reading the scale of the first tooth that becomes coated with the varnish.
Method for determining the dynamic viscosity of varnish using a falling ball viscometer
This article introduces a method for measuring the dynamic viscosity of varnish using a falling-ball viscometer. It is based on Stokes' law, which calculates viscosity by measuring the time required for a standard small ball to fall a fixed distance in a vertical glass tube filled with varnish.
Muffle Furnace Ash Test Method for Determination of Inorganic Filler Residues in Varnish
This article introduces the method of using the muffle furnace ash test to determine the residual amount of inorganic fillers in varnish. The inorganic substances in varnish can affect the performance of the coating, making accurate determination of ash content important for quality control.
Pull-off Adhesion Tester for Quantitative Measurement of Varnish Adhesion.
The pull-off adhesion tester quantitatively measures the adhesion strength between a varnish coating and the substrate by vertically pulling off a test column. It is essential to ensure proper substrate preparation, complete curing of the coating, and the use of a suitable adhesive during testing.
Buchholz indentation tester measures the indentation hardness of varnish.
The Buchholz indentation test is a method for measuring the indentation hardness of coatings such as varnishes. It involves applying a specific indenter to the coating surface under a standard load, and after unloading, the length of the residual indentation is measured. A longer length indicates lower hardness.
Pencil Hardness Plan Outstanding Paint Film Pencil Hardness Grade
The pencil hardness test is a method for evaluating the scratch resistance of paint films. It involves using a series of pencils with known hardness levels to scratch the coated surface under fixed conditions. The hardness grade of the coating is determined by observing whether permanent scratches are produced.
Visual color comparison method using colorimetric tubes to determine the color phase of varnish.
Colorimetric tube visual colorimetry is a method used to determine the color hue tendency of varnish samples by directly comparing them with a standard color scale using the human eye. During operation, samples and standard liquid columns should be prepared using colorimetric tubes of consistent specifications under standard lighting conditions, and the hue differences should be observed in parallel.
Flash point tester for determination of closed cup flash point of varnish
This article introduces the method for determining the closed-cup flash point of varnish using a flash point tester. The flash point refers to the minimum temperature at which the vapor on the surface of the varnish ignites momentarily when exposed to a flame after heating. It is a crucial indicator for assessing the fire risk during its production, storage, and transportation.
Thermogravimetric Analyzer for Determining the Solid Content of Varnish
The principle of determining the solid content of varnish using a thermogravimetric analyzer is as follows: when the sample is heated, volatile solvents and moisture evaporate, leading to a decrease in mass, while the remaining solid mass stabilizes. The solid content is calculated by comparing the initial and final mass ratios.
Adhesion Tester Pull-Off Method for Determining Adhesion Strength of Varnish
This article introduces the test method for measuring the adhesion strength of varnish using the pull-off method. It involves adhering test cylinders to the coating and substrate with adhesive, then vertically pulling them apart with an instrument to record the maximum pulling force and calculate the adhesion strength.
Key steps for measuring the efflux time of varnish using a viscosity cup method
This article introduces the method for measuring the outflow time of varnish using a viscosity cup. The principle is based on Poiseuille's law, where viscosity is estimated by recording the time it takes for the liquid to completely flow out from the small hole at the bottom of the cup—longer times typically indicate higher viscosity.
Application of Gloss Meter in Gloss Measurement of Varnish Coatings
A gloss meter is used to measure the gloss of varnish coatings by detecting surface-reflected light to quantitatively assess the appearance of the coating. The measurement is based on the principle of specular reflection of light, commonly employing angles such as 20°, 60°, and 85° to correspond to different gloss ranges, and follows standard formulas for calculation.