TQC Sheen Set of 20 Koh-i-noor Hardness Pencils

Hardness Pencils for Wolff Wilborn Scratch Testing

This set of 20 Koh-i-noor pencils is engineered for precision in scratch resistance testing using the TQC Sheen Pencil Hardness Test acc. Wolff Wilborn, in accordance with the Wolff Wilborn method. Enclosed in a durable aluminum case, these pencils are a critical consumable for accurate, repeatable surface hardness evaluations.

Full Hardness Range: 8B to 10H

• Covers the complete spectrum required for pencil hardness testing: 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, 10H.
• Enables precise grading of coating resistance across a wide variety of substrates.
• Supports consistent quality control in industrial, automotive, and protective coating applications.

Standards-Compliant and Trusted

• Specifically cited in ISO 15184 as the recommended pencil set for hardness testing.
• Compatible with ASTM D3363 and other international standards.
• Designed for use with the TQC Sheen Pencil Hardness Tester and similar Wolff Wilborn instruments.

Optimized for Lab and Production Use

• Pencils are applied at a 45° angle with fixed pressure (typically 500g or 750g) for standardized testing.
• Quick pencil interchangeability supports efficient workflows and minimal downtime.
• Supplied in a protective aluminum case for organized storage and transport.

Why Choose Industrial Physics Hardness Pencils?

• Manufactured to exacting tolerances for consistent scratch resistance results.
• Ideal for routine inspection and R&D environments where coating durability is critical.
• Backed by Industrial Physics’ global reputation for precision testing solutions.

Whether you’re verifying coating integrity on electronics, vehicles, or industrial components, this hardness pencil set delivers the accuracy and reliability your testing protocols demand.

Explore our full range of hardness testing products and discover how Industrial Physics supports your quality assurance goals with precision-engineered solutions.