Scratch Resistance

Scratch Resistance refers to the ability of a material's surface to resist damage caused by sharp objects or friction. In foreign trade, it is commonly used in quality descriptions for products such as coatings, plastics, glass, metals, electronic device casings, automotive interiors, and packaging materials. Usage scenarios include: product specifications, quality inspection reports, customer complaint handling, and technical annexes to contracts. Notes: 1) Scratch resistance is usually quantified by hardness (e.g., pencil hardness) or test standards (e.g., ASTM D3363, ISO 1518); results from different standards are not directly comparable. 2) Test conditions (load, scratch speed, tip material) must be specified; otherwise disputes may arise. 3) It differs from Abrasion Resistance: scratch resistance focuses on single or multiple sharp scratches, while abrasion resistance focuses on repeated friction wear. 4) It is related to but not identical with Hardness; hard materials may be brittle and chip easily, and scratch resistance also involves toughness. Foreign trade professionals should specify the exact test method and acceptance criteria in contracts to avoid returns or claims due to ambiguous terminology.