|
Physical Testing Items
|
Unit
|
HDPE |
PVC |
Remarks (HDPE) |
Gravity
|
g/§¨
|
0.95
|
1.43
|
Lighter
|
Tensile Strength
|
Kg/§²
|
260~260
|
350~600
|
More strength
|
Tensile Modulus
|
Kg/§²
|
10,000~12,000
|
25,000~35,000
|
Less Modulus
|
Curvature Strength
|
Kg/§²
|
350
|
860~1,000
|
Easier bending
|
Curvature Modulus
|
Kg/§²
|
8,500
|
23,000
|
Easier bending
|
Impact Strength
|
Kg.Cm/§²
|
£¼13.8
|
5~6
|
More strong
|
Hardness
|
Shore-D
|
64
|
70~90
|
Less hard
|
Specific Heat
|
Kg.Cm/§²
|
0.55
|
0.24
|
More resistance
|
Softening Point
|
¡É
|
121
|
80~90
|
More endurance
|
Limit of usage temperaure
|
¡É
|
From -60~60 |
From -5~60
|
Much less limit
|
Withstand Voltage
|
Kv/mm, 1 minute |
48 |
28~32 |
More reistance |
|
|
 |
