Biuged BGD 520 Automatic Scratch Tester

The Biuged BGD 520 Automatic Scratch Tester is a precision instrument designed to evaluate the scratch resistance of coatings under controlled, repeatable conditions. Using a stylus loaded with a defined force, the tester determines the point at which a coating is penetrated or damaged. Built according to ISO 1518 (scratch resistance of paints and varnishes), the BGD 520 provides reliable, standards‑aligned hardness assessment for coatings, inks, plastics, and surface materials. The instrument evaluates a coating’s resistance to scratching by moving a stylus—typically sapphire or diamond—across the coated surface under a specified load. The stylus penetrates the coating when the applied force exceeds the coating’s scratch resistance. The BGD 520 performs this test under controlled speed, load, and geometry, ensuring consistent and repeatable results.

Key Features

Standards‑Compliant Operation

Designed according to ISO 1518, ensuring globally recognized scratch‑resistance results.

Precision Stylus System

Uses a coned sapphire or diamond stylus with a 0.03 mm tip radius, positioned at a 90° angle to the sample surface.

Variable Loading Options

Available in multiple configurations depending on model variant:

• 0–50 g, 0–100 g, or 0–200 g loading ranges

This allows testing of both soft and hard coatings.

Stable Motor‑Driven Movement

A 60 W motor drives the stylus at a controlled speed of 10 ± 2 mm/s, ensuring consistent scratch formation.

Large Working Area

Supports a working distance of 100–120 mm depending on configuration, suitable for a wide range of sample sizes.

Robust Construction

A rigid frame and precision‑machined components ensure stable stylus movement and long‑term reliability.

Technical Specifications

• Conforms to: ISO 1518

• Stylus: Sapphire or diamond, tip radius 0.03 mm

• Stylus angle: 90°

• Load ranges: 0–50 g, 0–100 g, 0–200 g

• Motor: 60 W, 220 V, 50 Hz

• Stylus speed: 10 ± 2 mm/s

• Working distance: 100–120 mm

• Maximum panel size: 200 × 100 mm

• Maximum panel thickness: ≤12 mm

• Dimensions: 560–580 × 270 × 300–380 mm (depending on variant)

• Net weight: 17–17.5 kg

Ideal Applications

• Paint and coating scratch‑resistance evaluation

• Industrial coating QC

• Plastic, wood, and metal surface testing

• Ink and surface‑material durability testing

• R&D formulation comparison

• Production‑line hardness verification

Why Choose the Biuged BGD 520 ?

The BGD 520 provides accurate, repeatable scratch‑resistance testing that meets ISO 1518 requirements. Its variable‑load system, precision stylus, and controlled motor speed ensure consistent results across operators and environments. With robust construction and flexible configuration options, it is an excellent choice for laboratories and manufacturers requiring reliable, standards‑aligned scratch‑resistance evaluation.