| TESTITEM |
STANDARY INDEX |
TEST VALUE |
SINGLE ITEM
DETERMINATION |
| HIGH-CLASS |
QUALIFIED
CLASS |
appearance
quality |
vestige |
indistinct |
indistinct |
indistinct |
high-class |
| coating
omit |
not
allowed |
not
allowed |
no |
high-class |
| ripples |
not
allowed |
indistinct |
no |
high-class |
| bubbles(≤
10mm
) |
not
allowed |
≤1
buble/m2 |
no |
high-class |
| flaw(≤
3mm
) |
≤3
points/m2 |
≤10
points/m2 |
no |
high-class |
| abrasion |
not
allowed |
total
length ≤
100mm
/m2 |
no |
high-class |
| scratch |
not
allowed |
total
area ≤
300mm
/m2 |
no |
high-class |
total
number of abrasion and
scratch |
not
allowed |
≤4 |
0 |
high-class |
| aberration |
indistinct |
indistinct |
indistinct |
high-class |
dimensions
deviation |
length |
±
3mm |
0mm
~+
1mm |
passed |
| width |
±
2mm |
0mm
~+
1mm |
passed |
| thickness |
±0.2mm |
-0.02mm
~ +
0.04mm |
passed |
| squareness |
≤
5mm |
1mm |
passed |
| edge unstraightness |
≤
1mm
/m |
0.2mm
/m |
passed |
| warpage |
≤
5mm
/m |
1.5mm
/m |
passed |
| coating
thickness |
Min.
≥25µm |
31µm
Average 32µm |
passed |
| gloss
tolerance |
10≤(gloss
< 70)
5 ≤(gloss≥ 70) |
3.5(gloss=35.9) |
passed |
| pencil
hardness |
≥HB |
3H |
passed |
| coating
flexibility |
≤2T |
2T |
passed |
| coating
adhesive |
notlower than class1 |
class
1 |
passed |
| impact
resistance |
50kg
.cm
no depainting
no crack |
50kg
.cm
no depainting
no crack |
passed |
| grinding
resistance |
≥
5L
/µm |
16.6L
/µm |
passed |
| boiling
water resistance |
no
change |
no
change |
passed |
| pulute resistance |
≤15% |
2% |
passed |
| acid
resistance |
no
change |
no
change |
passed |
| alkaline
resistance |
no
change |
no
change |
passed |
| oil
resistance |
no
change |
no
change |
passed |
| solvent
resistance |
no
change |
no
change |
passed |
| scrub
resistance |
no
change
when≥10000 times |
no
change
when 10000 times |
passed |
| bending
strength |
≥100MPa |
102MPa |
passed |
| bending
elastic modulus |
≥2.0*10000 MPa |
2.86*
10000 MPa |
passed |
| penetrating
resistance |
≥9.0kN |
10.4kN |
passed |
| shearing
strength |
≥28.0MPa |
29.9MPa |
passed |
| 180°
peel strength |
≥7.0N/mm |
16.1N/mm |
passed |
| temperature
cycle resistance |
no
change |
no
change |
passed |
| thermal
expansion coefficient |
≤4.00*1/
00000°C
-1 |
0.91*1/
100000°C
-1 |
passed |
| heat
distortion temperature |
≥
105°C |
109°C |
passed |
| other
item |
|
|
is carriing on |
