This standard is applicable to the determination and evaluation of the coating performance of prepainted steel sheet (hereinafter referred to as "prepainted steel sheet").
Foreword II 1 Scope 1 2 Normative References 1 3 Terms and Definitions 1 4 Determination of Coating Thickness 2 5 Determination of Specular Gloss 5 6 Determination of Color Difference 6 7 Bend Test 8 8 Reverse Impact Test 9 9 Pencil Hardness Test 11 10 Organic Solvent Resistance Test 12 11 Abrasion Resistance Test 14 12 Scratch Resistance Test 15 13 Cross Cut Test 16 14 Cupping Test 18 15 Boiling Water Test 19 16 Acid and Alkali Resistance Test 21 17 Stain Resistance Test 22 18 Neutral Salt Spray Test 24 19 Dry Heat Resistance Test 25 20 Humidity and Heat Resistance Test 27 21 Sulfur Dioxide Humid-heat Test 29 22 Xenon Lamp Accelerated Weathering Test 31 23 Ultraviolet-lamp Accelerated Weathering Test 33 24 Atmospheric Corrosion Test 35 Appendix A (Informative) The Knoop Hardness Range of Zhonghua Brand 505 Pencils Dedicated for the Hardness Test of Steel Coil Coating and Its Corresponding Relationship with the Knoop Hardness of Zhonghua Brand 101 Drawing Pencil 38
This standard is applicable to the determination and evaluation of the coating performance of prepainted steel sheet (hereinafter referred to as "prepainted steel sheet").
Contents of GB/T 13448-2006
Foreword II
1 Scope 1
2 Normative References 1
3 Terms and Definitions 1
4 Determination of Coating Thickness 2
5 Determination of Specular Gloss 5
6 Determination of Color Difference 6
7 Bend Test 8
8 Reverse Impact Test 9
9 Pencil Hardness Test 11
10 Organic Solvent Resistance Test 12
11 Abrasion Resistance Test 14
12 Scratch Resistance Test 15
13 Cross Cut Test 16
14 Cupping Test 18
15 Boiling Water Test 19
16 Acid and Alkali Resistance Test 21
17 Stain Resistance Test 22
18 Neutral Salt Spray Test 24
19 Dry Heat Resistance Test 25
20 Humidity and Heat Resistance Test 27
21 Sulfur Dioxide Humid-heat Test 29
22 Xenon Lamp Accelerated Weathering Test 31
23 Ultraviolet-lamp Accelerated Weathering Test 33
24 Atmospheric Corrosion Test 35
Appendix A (Informative) The Knoop Hardness Range of Zhonghua Brand 505 Pencils Dedicated for the Hardness Test of Steel Coil Coating and Its Corresponding Relationship with the Knoop Hardness of Zhonghua Brand 101 Drawing Pencil 38
