Precision scratch tester for car coatings
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Standards
The instrument complies with international and national standards for coating and mechanical surface testing:
ISO 1518 – Paints and varnishes – Determination of scratch resistance
IEC 60950‑1 – Information technology equipment – Safety, Part 1: General requirements (mechanical strength and scratch resistance of enclosures)
IEC 60335‑1 – Household and similar electrical appliances – Safety, Part 1: General requirements (mechanical strength and surface scratch resistance)
BS 3900 – Paint test methods, including scratch and abrasion performance
ASTM D5178 – Test method for scratch resistance using a linear scratch device
ASTM D2197 – Test method for resistance of organic coatings to abrasion
GB 4943.1‑2011 – Safety of information technology equipment, Part 1 (scratch and mechanical performance of enclosures)
GB 4706.1‑2014 – Safety of household and similar electrical appliances, Part 1 (scratch resistance and mechanical strength of enclosures)
Parameters
| Item | Details |
|---|---|
| Input Voltage | 220V / 50Hz |
| Control System | PLC + Touch Screen |
| Drive Type | Stepper motor drive |
| Scratch Speed | 0 – 25 mm/s, adjustable |
| Number of Tests | 0 – 9999. programmable |
| Scratch Spacing | 0 – 50 mm, adjustable |
| Rotating Table | 360° rotation for versatile testing |
| Scratch Pressure | Standard 10 N ±0.5 N; optional 20 N weight for 30 N ±0.5 N |
| Scratch Needle | R0.25 ±0.02 mm |
Features
Precision Ball-Ended Needle: Hardened steel needle with 40° apex angle and polished tip ensures consistent scratch formation.
Adjustable Scratch Load: Vertical force can be set precisely to 10 N ±0.5 N or up to 30 N ±0.5 N with optional weights.
PLC + Touch Screen Control: Stable, user-friendly interface for setting speed, spacing, load, and number of cycles.
360° Rotating Worktable: Allows scratches in both longitudinal and transverse directions.
Accurate Spacing Control: Scratch intervals ≥5 mm and distance from sample edges ≥5 mm for reproducible testing.
Versatile Application: Suitable for automotive coatings, single-layer or composite paint systems, and protective surface evaluations.
Accessories
Hardened steel scratch needles (standard R0.25 mm, polished)
Optional weights for increased scratch load (20 N, 30 N)
Rotating sample worktable
Calibration tools and maintenance kit
PLC + touchscreen interface for data management
Test Procedures
Sample Preparation:
Select a representative painted panel or coated sample.
Mount the sample securely on the rotating worktable.
Setup:
Install the ball-ended steel needle in the scratch holder.
Adjust the vertical load to 10 N ±0.5 N (or higher with optional weights).
Set the desired scratch speed, spacing, and number of cycles using the touchscreen.
Testing Procedure:
Perform scratches in a plane perpendicular to the conductor edge at 20 mm/s ±5 mm/s.
Ensure each scratch is spaced at least 5 mm from adjacent scratches and 5 mm from sample edges.
Use the rotating table to perform longitudinal and transverse scratches as required.
Automatic monitoring and data logging are managed via the PLC and touchscreen system.
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