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