Biuged BGD 505 Adjustable Pencil Hardness Tester

The Biuged BGD 505 Adjustable Pencil Hardness Tester is a compact, precision instrument designed to evaluate the scratch hardness of coating films using the standardized pencil‑hardness method. Built according to ASTM D3363 and ISO 15184, it allows operators to apply controlled, repeatable loads to a pencil tip to determine the resistance of a coating to surface damage. The tester determines coating hardness by pushing a pencil of known grade across the coated surface at a fixed angle and controlled force. The BGD 505 allows the operator to select between 500 g, 750 g, and 1000 g loads by choosing different weights, ensuring consistent and repeatable testing conditions. The coating is then evaluated for scratching, gouging, or surface damage according to the relevant standard classification.

Key Features

Standards‑Compliant Construction

Designed according to ASTM D3363 and ISO 15184, ensuring globally recognized and comparable hardness results.

Three Adjustable Test Loads

Operators can select between 500 g, 750 g, and 1000 g by choosing different loading weights, allowing testing of both soft and hard coatings.

Fixed 45° Pencil Angle

The pencil is held at a precise 45° angle to the test surface, ensuring consistent contact geometry and repeatable results.

Three‑Point Contact Design

The tester maintains stable contact through three points—two rollers and the pencil core—ensuring smooth, controlled movement across the coating.

Compatible with Standard Pencil Sets

Supports Mitsubishi or equivalent pencil sets ranging from 6B to 9H, covering the full hardness scale used in coating evaluation.

Technical Specifications

• Test loads: 500 g / 750 g / 1000 g

• Pencil angle: 45°

• Contact points: 3‑point support (rollers + pencil core)

• Pencil hardness range: 6B–9H (Mitsubishi set recommended)

• Standards: ASTM D3363, ISO 15184

Ideal Applications

• Paint and coating hardness evaluation

• Industrial coating QC

• Plastic, wood, and metal surface testing

• R&D formulation comparison

• Production‑line hardness verification

Why Choose the Biuged BGD 505?

The BGD 505 offers accurate, repeatable, and standards‑aligned pencil hardness testing in a simple, durable, and easy‑to‑use design. Its adjustable loads, stable three‑point contact system, and fixed 45° angle ensure consistent results across operators and environments. For laboratories and manufacturers needing reliable scratch‑resistance data, the BGD 505 provides a dependable and cost‑effective solution.