1.1 This part of EN 10132 applies to: - non-alloy and alloy cold rolled narrow steel strip thicknesses up to 6 mm; - non-alloy and alloy cold rolled narrow steel strip in the quenched and tempered condition in thicknesses between 0,30 mm and 3,00 mm for springs and for other special applications. 1.2 This EN 10132-4 is complemented by EN 10132-1.