Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: BS EN 13523-12-TC:2020
• Năm ban hành / Publication date: 2020
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Tracked Changes (Redline) - Coil coated metals — Test methods Part 12: Resistance to scratching
• Chỉ số phân loại Quốc tế (ICS) / By field: 25.220.60 - Lớp mạ hữu cơ
• Số trang / Page: 25

Phạm vi áp dụng / Scope of standard

This part of the EN 13523 series describes the procedure for determining the resistance of an organic coating on a metallic substrate to penetration by scratching with a needle.

It is possible that with some aluminium alloys and thin gauge steel substrate below 0,4 mm, that rather than scratching, the needle will deform the substrate. Under these conditions, this test method is not applicable.

Soft coatings such as poly vinyl chloride (PVC) and structured coatings will not give a precise result due to the soft nature of the coating and/or the potential for the needle to snag.

The method is not applicable to conductive coatings.