UPGM203 is also called GPO-3 plate (Unsaturated Polyester Glass Mat Plate). It is kind of rigid plate insulating material, made of alkali-free fiberglass mat impregnated with unsaturated polyester resin, adding relevant chemical agents in heating and pressing to cure into rigid plate.
UPGM201: Good electrical properties under high humidity, good mechanical properties at medium temperature.
UPGM202: Good mechanical properties at medium temperature, excellent flame retardant properties.
UPGM203: Similar to UPGM202, improved arc resistance and tracking resistance
UPGM204: Compared with UPGM-203, it has better mechanical strength and better heat resistance level, suitable for more rigid service conditions, but not flame retardant.
UPGM205: It has not only high mechanical and electrical strength at room temperature but also excellent heat resistance. It also has good arc resistance, tracking resistance, low-smoke, non-toxic and flame-retardant properties.
UPGM203 Unsaturated Polyester Resin Laminated Sheet
UPGM203, GPO-3, Hm2471
155℃
F
Unsaturated Polyester + Glass mat
Red, White
0.5~80mm
1.85g/cm³
1020x2010mm,1020x2040mm,1220x2440mm or customized.
Good mechanical strength, rigidity, and hardness
Good electrical properties
Halogen-free nature
Cost-efficiency
● Electrical motor / generators
● Transformers
● Switches / switchboards
● Cable – clamp blocks
● Sparks
● Marine industry
● (Slot) wedges
| UPGM203, GPO-3, Hm2471 | ||||
|---|---|---|---|---|
| Physical Properties | Test Standard | Unit | Ref Value | Test Value |
| Density | ISO 1183 | g/cm³ | 1.8~1.9 | 1.85 |
| Water absorption (thickness 4mm) | ISO 62 | % | 0.5 | 0.2 |
| Mechanical Properties | ||||
| Flexural strength ⊥ | ISO 178 | MPa | ≥130 | 180 |
| Elastic modulus from bending test ⊥ | ISO 178 | MPa | ≥9000 | 10500 |
| Compressive strength ⊥ | ISO 604 | MPa | ≥250 | 300 |
| Impact strength ∥ | ISO 179/3C | kJ/m² | ≥40 | 58 |
| Tensile strength ∥ | ISO 527-4 | MPa | ≥70 | 80 |
| Electrical Properties | ||||
| Electric strength at 90 °C in oil ⊥ | IEC 60243-1 | kV/mm | ≥12 | 12.5 |
| Breakdown voltage at 90 °C in oil // | IEC 60243-1 | kV | ≥50 | 75 |
| Dielectric constant | IEC 60250 | MV/m | - | 4.5 |
| Comparative tracking index (CTI) | IEC 60112 | V | ≥500 | 600 |
| Thermal Properties | ||||
| Temperature Index | IEC 60216 | ℃ | 155 | 155 |
| Thermal class | - | Class | - | F |
| Flammability | IEC60707 | Class | - | V-0 |
The above values are for reference only and are taken from the average test results, do not represent complete consistency with the actual performance of the material.
Yes, based on drawings or samples.
UL, RoHS, REACH, CE, ISO, etc.
Usually 100 kg or 100 sheets, negotiable.
Yes, common samples free, buyer pays freight.
2-4 weeks after payment.
Yes, including labeling and packaging.
Yes, over 20 years.
T/T 30% deposit, 70% before shipment. Negotiable if supports needed.
Yes, we offer CNC machining.
Manufacturer and Exporter
No.3, Mianzhi Street, Zhucheng, Shandong, China
Copyright © 2025 by Qingdao Yilong Insulation Material Company Limited All Rights Reserved
