Mill Scale — Definition and Commercial Application

What is mill scale on steel? Why does it cause coating failure? How is it removed? Complete guide to mill scale, its composition, and why shot blasting to Sa 2.5 is the correct removal method.

Related shot blasting glossary terms

• Sa 2.5 (Near-White Metal) Explained
• Sa 3 (White Metal) Explained
• What is Shot Blasting?
• Intumescent Paint Explained
• Mill Scale Explained
• Surface Profile Explained
• BS EN ISO 8501-1 Explained
• Blast Cleaning Explained
• Rust Grade Explained
• NACE Standards Explained
• SSPC Standards Explained
• Dry Film Thickness (DFT) Explained