Light transmittance

SUMIKAEXCEL PES is a transparent resin with a slight yellowish tint, and among heat-resistant engineering plastics, it has a low haze value and an excellent level of light transmittance.

Figure 3-8-1 Light transmittance of SUMIKAEXCEL PES

Refractive index

The refractive index of SUMIKAEXCEL PES is shown below. The high refractive index of PES is a great advantage when applied to lenses, etc.

Table 3-8-1 Refractive index of SUMIKAEXCEL PES

Weather resistance

Like other sulfone resins, SUMIKAEXCEL PES does not have good weather resistance. Deterioration occurs from the surface of the polymer due to ultraviolet rays.
In addition, the use of black color helps prevent loss of strength, which may make it possible to use it outdoors.

Figure 3-8-2 SUMIKAEXCEL PES

CAE analysis data

CAE (computer-aided engineering) analysis allows you to evaluate (simulate) design issues in a product that has been simulated on a computer. The table below shows some of the technical data required for CAE. The data below is data measured for flow analysis. If you require detailed technical data for CAE analysis, please contact our staff.

Table 3-8-2 Properties of SUMIKAEXCEL PES

	Test Method	unit	Non-reinforced	Glass fiber reinforced
			3600G 4100G 4800G	3601GL20 4101GL20	3601GL30 4101GL30
Specific heat	ASTM E1269	J/(kg K)	963	847	788
Thermal Conductivity	ISO 22007-2	W/(m K)	0.16	0.28	0.24
Young's Modulus (MD)	ASTM D638	MPa	2,650	6,600	8,900
Young's Modulus (TD)	ASTM D638	MPa	2,650	4,300	5,000
Poisson's ratio (MD)	ASTM D638	-	0.40	0.40	0.41
Poisson's ratio (TD)	ASTM D638	-	0.40	0.47	0.49
Linear expansion coefficient (MD)	ISO 11359-2	10-5 /K	4.9	2.4	2.1
Linear expansion coefficient (TD)	ISO 11359-2	10-5 /K	4.9	4.7	4.5