The standard "NF A91-140-2018 Metal platings platings and chemically deposited layers on metal substrates, review of methods for testing adhesion" specifies in detail the adhesion assessment methods for platings and chemically deposited layers on metal substrates. The standard introduces several different adhesion testing methods, including mechanical disbonding method, scratch method, etc., to evaluate the bonding strength of platings to substrates under external force. The standard provides a basis for the quality control of metal platings in industrial production to ensure that platings have excellent adhesion and durability in practical applications. It is widely used in aviation, automotive, electronics and other fields. This method helps to improve the performance and service life of the product, ensure the reliability of the platings, and avoid failure or damage caused by platings peeling.