Types of products
Polymer coated coiled steel relates to various categories according to types of metal and coatings used.
List of materials most frequently used for coating with corresponding thickness ranges
List of materials most frequently used for coating with corresponding thickness ranges
European system of classification of polymer coatings types (EN 10169-1)
| Material used for coating | Symbol | Typical thickness of coating (thickness range) |
|---|---|---|
| Liquid paints | ||
| Acrylic paint | AY | 5-25 µmb,c |
| Epoxide resin | EP | 3-20 µmb,c |
| Polyestera | SP | 5-30c µmb,c |
| Polyamide - modified polyestera | SP-PA | 15-50 µmb,c |
| Highly resistant polyestera | HDP | 25-60 µmb,c |
| Polyamide - modified highly resistant polyestera | HDP-PA | 15-50 µmb,c |
| Polyurethanea | PUR | 10-60 µmb,c |
| Polyamide - modified polyurethanea | PUR-PA | 10-50 µmb,c |
| Polyvinydenfluoridea | PVDF | 20-60b µmb,c |
| Plastisol coating based on polyvinylchloridea | PVC(P) | 40-200c µmb,c |
| Special adhesived | SA | 5-15 µmb,c |
| Heat resisting fireproof system | HRNS | 5-15 µmb,c |
| Welded coating with large zinc content | ZP | 2-7 µmb,c |
| Welded coating with other electrically conductive pigments | CP | 1-15 µmb,c |
| Films |
|
|
| Polyvinylchloridee | PVC(F) | 50-800c µmb,c |
| Polyvinylfluoride | PVF(F) | 38f µmb,c |
| Polyethylene | PE(F) | 50-300 µmb,c |
| Polyethyleneterephthalate | PET(F) | 15-150 µmb,c |
| Polypropene | PP(F) | 30-200 µmb,c |
| Felt, absorbing condensate | CA(F) | і 300 µmb,c |
a - also acceptable in a texturized form.
b - consists of a primary coating and typically of an upper coating (intermediate coatings are also acceptable).
c - refers to thickness (measured with a micrometer) in case of texturized or embossed coatings.
d - for example, for systems, contributing to adhesional strength increase and fit for bonding metal with rubber, plastic and other materials in the following processes.
e - acceptable in a flat or a printed form, and also - in embossed form.
f - except for an adhesive film about 10µm thick.
Japanese system of classification of polymer coatings types (JIS G3312)
| Class symbol | CGCC | CGCH | CGCD | CGC340 | CGC400 | CGC440 | CGC490 | CGC570 |
|---|---|---|---|---|---|---|---|---|
| Nominal thickness used (1) | 0,25 or more, less than or equal to 2,3 | 0,11 or more, less than or equal to 1,0 | 0,40 or more, less than or equal to 2,3 | 0,25 or more, less than or equal to 1,6 | 0,25 or more, less than or equal to 1,6 | 0,25 or more, less than or equal to 1,6 | 0,25 or more, less than or equal to 1,6 | 0,25 or more, less than or equal to 1,6 |
| Area of application | Industrial | Industrial hard, hard | Drawing | Engineering |
|---|---|---|---|---|
| Symbol of substrate class for preliminary painting | SGCC | SGCH | SGCD1, SGCD2, SGCD3 | SGC340,
SGC400, SGC440, SGC490, SGC570 |
Comments:
- Nominal thickness different from a thickness listed in the table, can be a subject of discussion between a customer and a supplier.
- For defining mass of coating on the substrate for the preliminary painting, Standard JIS G 3302 is used.
- When using a sheet or a coil for roof operations and architectural trimming, symbol R for the roof and symbol A for the trimming, are to be added to the symbols listed in the table. In this case nominal thickness and a mass symbol of a coating should conform to Appendix В 1 for JIS G 3302.
- For a sheet or a coil with undulating shape according to JIS G 3302, symbol W and a symbol for a shape for undulated sheets, should be added to a class symbol listed in the table. In this case nominal thickness and a mass symbol of a coating should conform to Appendix 2 for JIS G 3302.
- For an undulated sheet you should use a product of industrial hard, hard and engineering quality, listed in the table.
- While roof covering and architectural trimming, one should use a polymer coating of class 2 or super abrasion coating.
- When using sheet or coil for roof covering, when quality is guaranteed only for one side, the other side must be painted beige for class 2.
Reference:
Examples of class symbols
- Sheets and coils of hot-dip-galvanized steel coated with polymer, of industrial quality, class 2, with quality guaranteed for one side — CGCC-20.
- Sheets and coils of hot-dip-galvanized steel coated with polymer of industrial quality, class 2, with quality guaranteed for one side - CGCCR-22.
- Sheets and coils of hot-dip-galvanized steel coated with polymer for roof covering, of engineering quality, class 3 (class 2 for the reverse side), with quality guaranteed for both sides - CGC400-32.
- Undulated steel sheets for roof covering from sheets and coils of hot-dip-galvanized steel coated with polymer of industrial quality, class 2, with quality guaranteed for one side -CGCCR-20 W 2.
