| Japanese Standard: |
JIS G3312 |
| T-Bend (both sides): |
≤ 4T |
| Adhersion (Erichsen): |
The rate of grids with painting layers peeled off is ≤ 5% |
| Impact test: |
500g x 500mm - the painting layer is not peeled off from the steel base.. |
| Pencil hardness: |
≥ 3H |
Rubbing with M.E.K solvent: The painting layer is not peeled off from the steel base.
|
Sides |
Standard |
Top finish
|
≥ 100 dr
|
| Bottom backer |
≥ 70 dr
|
Bottom monocoat
|
≥ 70 dr
|
Salt spray test:
| Sides |
Duration (hrs) |
| Top side |
≥ 500 hrs |
| Bottom side |
≥ 200 hrs |
Paint film:
For 04 layers (Unit: µm)
| Layers |
Coating thickness |
| Finish layer |
10 ÷ 20 |
| Top primer |
5 ÷ 8 |
| Bottom primer |
5 ÷ 8 |
| Back layer |
5 ÷ 10 |
For 03 layers (Unit: µm)
| Layers |
Độ dày màn sơn |
| Finish layer |
10 ÷ 20 |
| Top primer layer |
5 ÷ 8 |
Bottom monocoat layer
|
7 ÷ 10
|
*Note: Bottom monocoat layer