BGD 520  Automatic Scratch Tester


Coatings and paints can protect,decorate substrate or conceal the defects of substrate, and these three functions are related with coatings hardness. And hardness is the important performance for paint mechanical strength, as well as the important indicator to judge paint quality. One of important indicators to evaluate coatings hardness is scratch resistance.
ISO 1518 《Paints and varnishes — Determination of scratch resistance》specifies a test method for determining under defined conditions the resistance of a single coating or a multi-coat system of paint, varnish or related product to penetration by scratching with a scratch stylus loaded witha specified load. Penetration of the stylus is to the substrate, except in the case of a multi-coat system, in which case the stylus can penetrate either to the substrate or to an inter mediate coat.

BGD 520  Automatic Scratch Tester

Main Technical Parameters: 

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Technical Parameter ↓

Conform standardsISO 1518-1

BS 3900:E2

ISO 1518-2
Stylus1.Having a hemispherical hard-metal tip of radius 0.25mm or 0.5mm

2.Having a hemispherical synthetic-ruby of radius 0.25mm or 0.5mm

Coned sapphire or diamond, the tip radius is 0.03mm
Angle between stylus and sample90°90°

(0g~50g or 0g~100g or 0g~200g)

Motor60W  220V  50HZ
Sytlus Moving Speed(35±5)mm/s(10±2) mm/s
Working Distance120mm100mm
Max. Panel Size200mm×100mm
Max. Panle ThicknessLess than 1mmLess than 12mm
Overall Size500×260×380mm500×260×340mm
Net Weight17 KG17.5KG


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