| Customization: | Available |
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| Application: | Insulators, Electrical Winding Insulation, Electrical Base, Shell, Switch Baseplate |
| Color: | Dark Green/Yellow/Black |
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R4 is a fire rated electrical-grade, dielectric fiberglass laminate epoxy resin system combined with a glass fabric substrate.
The abbreviation "FR4" means: F (for flame) and R (for retardant).
| No. | Property | Unit | Requirment | Test Result | Test Method | |
| 1 | Flexural strength | A Direction | MPa | ≥340 | 593 | IEC 60893-2:2003 |
| B Direction | ≥340 | 506 | ||||
| 2 | Modulus of elasticity in flexure | A Direction | MPa | - | 2.43 X 104 | |
| B Direction | - | 2.24 X 104 | ||||
| 3 | Compressive strength | MPa | - | 598 | ||
| 4 | Charpy impact strength(notched) | A Direction | kJ/m2 | ≥33 | 75.7 | |
| B Direction | ≥33 | 56.2 | ||||
| 5 | Shear strength parallel to laminations | A Direction | MPa | - | 64.7 | |
| B Direction | - | 67.8 | ||||
| 6 | Tensile strength | A Direction | MPa | - | 443 | |
| B Direction | - | 345 | ||||
| 7 | Dielectrical strength at 90ºC±2ºC in oil perpendicular to laminations (20s step-by-step test) | kV/mm | ≥11.8 | 15.4 | ||
| 8 | Breakdown voltage at 90ºC±2ºC in oil perpendicular to laminations (20s step-by-step test) | kV | ≥35 | 100 | ||
| 9 | Relative permitivity(50Hz) | - | - | 4.77 | ||
| 10 | Insulation resistance after immersion in water | A Direction | Ω | ≥5.0 X 1010 | 1.9 X 1014 | |
| B Direction | ≥5.0 X 1010 | 8.2 X 1013 | ||||
| 11 | Deflection temperature under flexual load(Tff 1.8) | ºC | - | >240 | ||
| 12 | Water absorption | mg | ≤25 | 8.8 | ||
| 13 | Bonding strength | N | - | 8741 | IEC 60893-3-4:2003 | |
| Note: 1.In test item 3,the thickness of sample is 9.46~9.47mm. 2.In test item 7,the dimension of sample is 1.95mm~1.96mm,using Φ25mm/Φ75mm Circle Column electrode system. 3.In test item 8,the dimension of sample is 100.00mmx4.80mmx25.00mm,using Φ130mm/Φ130mm flat electrode system. 4.In test item 12,the dimension of sample is 50.10mmx50.10mmx5.00mm. 5.The indicator requirements are based on the EPGC306 type in IEC 60893-3-2:2003. |
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The FR4/G10 sheet is widely used high-end insulation parts processing, FPC (flexible printed circuit-board) reinforcement sheet, planetary wheel, transformer insulation baffle, high voltage switch, precision test fixture, carbon film printing, electronic insulation parts, various water sports equipment and blade-tool handle materials.
Our company was founded in 2012, located in Guangzhou city of China, and we specialize in producing G10/FR4 laminated sheet,colored G10 sheet,fiberglass rod,fiberglass tube,carbon fiber sheet,carbon fiber tube/rod,fiberglass processing products,carbon fiber processing products,thermoplastic fiberglass sheet,thermoplastic carbon fiber sheet,micarta sheet,acrylic sheet,POM sheet,POM rod,etc.We can develop and produce various insulation products according to customers' requirement.
1. Q: Are you factory?
A: Yes, We are factory.
2. Q: How about the delivery time?
A: Depends on the quantity of order,ususlly it's less than 10 work days.
3. Q: Can I get free sample for checking?
A: We can provide samples by free.
4. Q: Can you give me a discount price?
A: More quantity, more discount you can get.
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