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Instruments
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 tester.

ISO 1518 Paints and varnishes -- Determination of scratch resistancespecifies 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 with a 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 intermediate coat.

This test has been found to be useful in comparing the scratch resistance of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in scratch resistance. 

Before 2011, there is only one standard which is used to evaluate paint scratch resistance, which against to evaluate scientifically to paints scratch resistance under different applications. After revise this standard on 2011, this test method is divided two parts: One is constant-loading, i.e the loading to panels is constant during the scratch test, and the test results is shown as max. weights which don’t damage coatings. The other is variable loading, i.e. the loading on which stylus loads test panel is increased continuously from 0 during the whole test, then measure the distance from finial point to the other point when the paint appear scratch. Testing result is shown as critical loads. 

As a important member of Chinese Paint & Coating Standard Committee , Biuged is responsible for drafting the relative Chinese standards on the base of ISO 1518, and developed BGD 520 scratch testers which conforms the newest ISO 1518:2011.

 

Characters

Big working table can be moved left and  right—convenient  for measuring different areas in the same panel

Special fixing device for sample---can test different size substrate

Sound-light Alarm system for puncturing through sample panel---more visual

High hardness material stylus---more durable


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Main Technical Parameters

Ordering information →

Technical Parameter 

BGD 520/1 Automatic Scratch Teter

Constant-loading

BGD 520/2 Automatic Scratch Teter

Variable-loading

Conform standards

ISO 1518-1

BS 3900E2,BS EN 13523-12

ISO 1518-2

Stylus

Having a hemispherical hard-metal tip of radius 0.5mm

Coned sapphire or diamond, the tip radius is 0.03mm

Angle between stylus and sample

90°

90°

Weight

0.5N×11N×12N×25N×110N×1

0g50g or 0g100g or 0g200g

Motor

30W  220V  50HZ

                    60W  220V  50HZ

Sytlus Moving Speed

35±5mm/s

10±2mm/s

Working Distance

120mm

100mm

Max. Panel Size

200mm×100mm

Max. Panle Thickness

Less than 1 mm

Less than 12 mm

Overall Size(L×W×H)

560mm×270mm×380mm

580mm×270mm×300mm

Net Weight

17 KG

17.5 KG


BGD 1003---Scratch stylus A, having a hemispherical hard-metal tip of radius (0,50 ± 0,01) mm.

BGD 1004---Scratch stylus B, having a hemispherical hard-metal tip of radius (0,25 ± 0,01) mm.

BGD 1007---Stylus for BGD 520/2 

Introduction Video (BGD 520/1)


Operation Video (BGD 520/1)


Introduction Video (BGD 520/2)


Operation Video (BGD 520/2)

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Biuged Precise Instruments (Guangzhou) Co.,Ltd

AddNO.15, Fuzhong Rd., Zhongxin Town, 

Zengcheng District, Guangzhou.China

Tel+86-20-32955999;+86-20-32955820

Fax+86-20-32955819 

E-mailjack@biuged.com

Website http://www.biuged.com 


Biuged Instruments Co.,Ltd.

Add:RM.310, NO.1, Sicheng Rd.,
Tianhe District, Guangzhou.China

Tel:+86-20-82169666

Fax:+86-20-32955818

E-mail:jack@biuged.com





Biuged Precise Instruments (Shanghai) Co.,Ltd

Add:Room 906, 9th Floor, Zhongcai Industrial Park, No.1111 Zhu Feng Road, Qingpu District, Shanghai, China

Tel:+86-21-59240298

Fax:+86-21-59249719

E-mail:xjx@biuged.com

  Biuged Laboratory Instruments (Guangzhou) Co., Ltd.   Guangdong ICP record number:11044672