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Our illustrated ISO 8501‑1:2007 guide provides a clear visual reference for assessing rust grades and preparation levels of uncoated steel surfaces. It helps professionals accurately evaluate surface cleanliness before coating, ensuring consistent and reliable surface preparation.
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Our TQC Sheen ISO 8501‑1:2007 guide provides a comprehensive visual reference for assessing rust grades and preparation grades of uncoated steel substrates. This essential publication supports professionals who need to evaluate steel surfaces before coating, ensuring accurate, consistent, and standards‑aligned surface preparation.
This edition includes high‑quality color photographs that illustrate rust and purity levels after manual cleaning, machine cleaning, or blasting. It is widely used by blasting and painting companies, paint technicians, coating inspectors, and industrial coating specialists.
| ISO 8501 Part | Book Title | SKU |
| ISO 8501-1: 2007 | Rust Grades and Preparation Grades of Uncoated Steel Substrates and of Steel Substrates After Overall Removal of Previous Coatings | LD3020 |
The ISO 8501‑1:2007 guide is the definitive resource for evaluating the condition of non‑coated steel surfaces. It provides:
This publication helps ensure steel surfaces are prepared correctly for optimal coating adhesion and long‑term performance.
Alongside the ISO 8501 book, we offer a complete range of corrosion testing solutions across our Industrial Physics portfolio. Our products include the Hull Roughness Gauge, Humidity Cabinet, and the Bresle Kit Chloride Test Kit. These advanced instruments are designed to support high-quality testing for various industries, including automotive, construction, and manufacturing. For a full suite of corrosion and surface preparation solutions, explore our dedicated corrosion testing products.
With years of experience in corrosion testing technology, we have developed robust, high-precision instruments for evaluating material durability and performance under harsh conditions. Explore our knowledgebase for detailed insights, including best practices for corrosion testing and articles on key industry trends in corrosion prevention.
In our knowledgebase, you’ll find insightful articles, such as What is Cyclic Corrosion Testing (CCT) and What is it Used For? and How High Humidity Affects Electronics.
SKU: LD3020
Applications: Abrasion Testing, Coating Testing, Corrosion Testing
Materials: Aluminum, Metal, Paints and Coatings , Steel
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The ISO 8501 guides are visual reference books used by coating inspectors, protective coating applicators, surface preparation specialists and QC teams to visually assess the surface cleanliness of steel before coating. They pair the written descriptions in the ISO 8501 standard with high-quality color photographs showing what each rust grade and preparation grade actually looks like – so an inspector on a bridge, a shipyard or a heavy-industry site can compare a prepared steel surface directly against the reference photos and assign a grade with confidence. Used across construction, marine, offshore, oil and gas, and any sector where protective coatings are applied over prepared steel substrates.
The standard document from ISO defines the grades in words. The TQC Sheen guides show what each grade looks like in high-quality color photographs across multiple substrate examples – so inspectors, applicators and QC operators making real-time visual assessments on site can compare a prepared surface directly against a reference image rather than interpreting a written description alone. Most working practitioners find the guides essential for consistent grade assignment between operators and between sites – the standard document alone is not designed for hand-held on-site use.
Individual guides are available for each part of ISO 8501. Part 1 (rust grades and preparation grades of uncoated steel substrates) is the most widely used – it visually classifies steel by initial rust grade (A, B, C, D) and by preparation grade after blast cleaning, hand and power tool cleaning, or flame cleaning (Sa, St, Fl grades). Other parts cover preparation grades after previous coatings have been removed, welds and edges with surface imperfections, and preparation grades in connection with water jetting. Confirm the specific part number and edition you need against your project specification before ordering.
The current TQC Sheen guide references ISO 8501-1:2007 (Edition 2), which remains the active published standard at time of writing and was last confirmed by ISO in 2017. A revision (Edition 3) is under development at ISO and will supersede the 2007 edition once published – specification teams working on long-term projects should track the ISO publication schedule. For Part 3 (welds and edges), the 2006 edition was replaced by ISO 8501-3:2025 (Edition 3) in August 2025. Confirm current guide stock with our support team before ordering if edition tracking is critical to your project.
ISO 8501-1:2007 itself is published by ISO as a hardback A5-format book in four languages (English, French, German and Swedish) so all grade descriptions and photograph captions are readable across those language markets. The TQC Sheen guide follows the same format. For channel partner and distributor use across other language regions, contact our support team to confirm current translated editions and availability – the visual photograph reference works regardless of the reader’s primary language.
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