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Basic characteristics

Typical value of physical properties

Please use the data as a guide.
In some cases, there is a slight difference by varieties.

unit values
Water absorption % 0.1
Linear expansion coefficient 10-5/C 6`8
Molding shrinkage % 0.4`0.6
Refractive index*1 % 1.59
Specific heat J/kgC 1420
Thermal conductivity W/mC 0.12
Density*2 kg/m3 1040`1050
Poisson's ratio - 0.35`0.38
Ignition temperature C 495
Flash temperature C 360
Combustion heat kJ/kg 40000
Oxygen index - 18
Cool tolerance temperature C -30

*1 GPPS only
*2 Except for flame retardant PS

Typical conditions in injection molding

Type of resin High flow General Heat resistant
Estimated Melt mass-flow rateig/10minj More than 10 5 ` 10 Less than 5
Type of injection molding machine Inline screw
Cylinder temperature (C) H-1 180`190 190`200 200`210
H-2 190`200 200`210 210`230
H-3 200`210 210`220 230`240
Nozzle temperature (C)@ 200 210 230
Injection pressure iMPaj Nozzle portion 60`70 70`80 80
Mold temperature (C) 40 40 40`50

The molding conditions proposed, is the typical conditions of the test at our company-owned injection molding machine(75`130ton) and the adoption case.

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