Serial

Item and units

Standard requests

Test results

Conclusion

1

Size

Deviation

(mm)

Thickness

   15±0.4

14.84

Ok

Length

1830(-2~0)

1829

Ok

Width

915(-2~0)

914

Ok

Right angle(mm/m)

≦1

0

Ok

Angularity(%)

≦0.5

0.1

Ok

Diagonal line length

≦2

1

Ok

2

Appearance

Status

Surface

Flat and smooth,without crack and scratch,

Without palpable impurity and non-dispersive accessory

OK

OK

Flow mark and stripe

Palpable flow mark and stripe shouldn’t be not allowed

Ok

Groove

Two grooves with the depth of no more than the thickness limit deviation and the width of no more than 10mm are allowed within the scope of no more than one fifth of sheet width from the longitudinal edge of the sheet

Ok

Concave-Convex

Less than 1mm bump allowed;per square meter the quantity of less than 10x10mm minor bumps should less than five and dispersive

Ok

Material shortage mark

Palpable material shortage mark not allowed

Ok

Scratch mark

Slightly felt scratch mark allowed and should not be netted

Ok

3

Water absorption(%)

≦0.5

0.35

OK

4

Shore hardness(Surface),HD

≧58

78

OK

5

Impact strength notch charpy(kJ/㎡)

≧14

15.9

OK

6

Flexural strength(MPa)

≧24

28.6

OK

7

Flexural modulus of elasticity(MPa)

≧1200

1767

OK

8

Vicat softening point(℃)

≧75

80.3

OK

9

Size change ratio after heating(%)

±0.2

-0.17

OK