Test standard

GB/T4897-2003                 GB 18580-2001

GRADE

E1

Test Item

Standard value

Test value

Conclusion

Static bending strength

Mpa

x>=13.0xmin>=10.4 

X:18.7 xmin:14.8

Pass

Modulus of elasticity

Mpa

x>=1600

3200

pass

Internal bonding  

Mpa

x>=0.35xmin>=0.28

X:0.46Xmin:0.33

pass

surface combining strength

%

X>=0.8 Xmin>=0.6

X;1.57 Xmin:1.45

pass

2h

2h Water absorption

%

X<=8.0 Xmax<=9.6

X:3.2  Xmax:3.6

pass

Water content

%

4--13

6.5

pass

Density

g/m3

0.40.9

0.85

pass

windage of Average inside density deviation

%

+/-6.0

+3.1      -1.6

pass

Screw holding strength

surface

X>=1100Xmin>=880

X:1500  Xmin:1340

pass

edge

X>=700Xmin>=560

X:1280  Xmin:880

pass

Formaldehyde emission

mg./100g

E1<=9

4.0

pass

Remark