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PEI NATURAL GRADES
JTYPEI®NA is a profile made of pure polyetherimide (PEI) material. PEI is an amorphous polymer with a glass transition temperature of up to 215°C. It has mechanical properties equivalent to PEEK, as well as excellent heat resistance, insulation properties, and flame retardancy.
The product can be used in environments with high stress, fatigue stress or impact stress in high temperature environments, such as auto parts or interior and exterior decoration, semiconductor processing, precision bearings, mechanical load-bearing components, wind power equipment or new energy battery components, electrical system.
Product Features
JTYPEI®NA type pure PEI profiles:
● High tensile strength, the strength is above 110MPa.
● High bending strength, the strength is above 150MPa.
● Excellent thermomechanical load-carrying capacity, thermal deformation temperature is greater than 200℃.
● Good creep resistance and fatigue resistance.
● Excellent flame-retardant performance, low-smoke combustion.
● Excellent dielectric and insulation.
● Excellent dimensional stability, low thermal expansion coefficient.
● High heat resistance, can be used for a long time at 170℃.
● Can transmit microwave.
Application Fields
JTYPEI®NA type PEI profiles can be applied:
—— Mechanical engineering industry；
—— Semiconductor and electronics industry；
—— Automobile industry；
—— Home appliance industry.
Instructions for Use

Machined by Lathes or Milling Machine. 

Remove surface heat-treatment aged layers and the thickness of removal layer is 0.5-1mm.

Product Storage Instructions
Placed away from light, avoiding humid, and away from oily substance.
Packed with polymeric film when not use.
Product Technical Data
The performance of JTYPEI®NA series products is as follows:

Performance Test Method Unit NA
Color Eye / Translucent amber
Density ISO 1183-1 g/cm³ 1.28
Tensile Strength ISO 527-2 MPa ≥110
Tensile Modulus ISO 527-2 GPa ≥3.1
Elongation At Break ISO 527-2 % ≥10
Notched Charpy Impact Strength ISO 179 KJ/m² ≥4.0
Flexural Strength ISO 178 MPa ≥150
Flexural Modulus ISO 178 GPa ≥3.1
Rockwell Hardness ISO 2039-2 HRM ≥100
Glass Transition Temperature ISO 11357-3 ℃ 215
Coefficient of Linear Thermal Expansion 20-100℃ ISO 11359-2 10-6/K ≤60
Long Service Temperature UL 746B ℃ 170
Heat Deflection Temperature ISO 75-2 ℃ ≥200
Water Absorption（23℃、Water、24h） ISO 62 % ≤0.4
Flame Retardancy UL 94 / V-0
Volume Resistivity IEC 61340-2-3 Ω•cm 1015-1017
Dielectric Strength ASTM D149-20 kV/mm ≥26
Dielectric Constant IEC 62631-2-1 1 3.4
Dielectric Loss IEC 62631-2-1 1 5.44*10-3
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