NP510A Glass Epoxy Laminate Sheet
NP510A Glass Epoxy Laminate Sheet is a woven glass fabric composite combined with a brominated epoxy resin system, certifiable to ANSI/NEMA IM 60000-2021 Grade FR-4, MIL-I-24768/27 Type GEE-F, IEC 60893-3-2 PE GC 202, ASTM D709 Type FR-4, and IPC 4101/21. The material delivers a flexural strength of 65,000 / 52,000 psi (LW/CW), a tensile strength of 40,000 / 32,000 psi (LW/CW), and achieves a UL 94 V-0 flammability rating with a glass transition temperature of 130°C. UL Listed for thicknesses greater than 0.029″.
Key Properties
- Flexural Strength, Condition A LW / CW: 65,000 / 52,000 psi (448.2) / (358.5) MPa (ASTM D790)
- Flexural Modulus, Condition A LW / CW: 2,900 / 2,600 kpsi (20.0) / (17.9) GPa (ASTM D790)
- Tensile Strength, Condition A LW / CW: 40,000 / 32,000 psi (275.8) / (220.6) MPa (ASTM D638)
- Izod Impact Strength, Condition E-48/50 LW / CW: 7.90 / 7.30 ft-lb/in (4.22) / (3.90) J/cm (ASTM D256)
- Compressive Strength, Condition A Flatwise: 66,000 psi (455.1) MPa (ASTM D695)
- Flammability, Condition A: V-0 (UL Bulletin 94)
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- Specifications
- Applications
- General Info
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Physical Properties
| Property | Value | Test Method |
| Specific Gravity | 1.85 | ASTM D792 |
| Rockwell Hardness (0.250″ Build-up) | 98 M Scale | ASTM D785 |
| Moisture Absorption, Condition D₁-24/23 | 0.10% | ASTM D570 |
| Flexural Strength, Condition A LW / CW | 65,000 / 52,000 psi (448.2) / (358.5) MPa | ASTM D790 |
| Flexural Modulus, Condition A LW / CW | 2,900 / 2,600 kpsi (20.0) / (17.9) GPa | ASTM D790 |
| Tensile Strength, Condition A LW / CW | 40,000 / 32,000 psi (275.8) / (220.6) MPa | ASTM D638 |
| Izod Impact Strength, Condition E-48/50 LW / CW | 7.90 / 7.30 ft-lb/in (4.22) / (3.90) J/cm | ASTM D256 |
| Compressive Strength, Condition A Flatwise | 66,000 psi (455.1) MPa | ASTM D695 |
| Bonding Strength, Condition A | 2,300 lb (1,043.3) kg | ASTM D229 |
| Shear Strength, Condition A Perpendicular | 21,500 psi (148.2) MPa | ASTM D732 |
Thermal Properties
| Property | Value | Test Method |
| Temperature Index — Electrical / Mechanical | 130 / 140°C | UL Bulletin 746b |
| Coefficient of Thermal Expansion, X-axis / Y-axis | 10.0 / 13.0 (“/”/°C × 10⁻⁶) | IPC-TM 650-2.4.24 |
| Tg by DMA | 130°C | — |
| Flammability Vertical, Condition A | V-0 | UL Bulletin 94 |
Electrical Properties
| Property | Value | Test Method |
| Dissipation Factor @ 1 MHz, Condition D-24/23 | 0.032 | ASTM D150 |
| Relative Permittivity @ 1 MHz, Condition D-24/23 | 4.80 | ASTM D150 |
| Breakdown Voltage, Condition A | 66 kVolts | ASTM D149 |
| Breakdown Voltage, Condition D-48/50 | 65 kVolts | ASTM D149 |
| Electric Strength, Condition A | 630 Volts/mil (248.0) kV/cm | ASTM D149 |
| Electric Strength, Condition D-48/50 | 670 Volts/mil (263.8) kV/cm | ASTM D149 |
| Arc Resistance, Condition A | 130 sec | ASTM D495 |
Compliance
- ANSI/NEMA IM 60000-2021 Grade FR-4 — Certifiable
- MIL-I-24768/27 Type GEE-F — Certifiable
- IEC 60893-3-2 PE GC 202 — Certifiable
- ASTM D709 Type FR-4 — Certifiable
- IPC 4101/21 — Certifiable
- UL Listed (thicknesses greater than 0.029″)
- Electrical insulation panels and barriers in switchgear and transformer equipment
- PCB carriers and electrical fixture substrates
- Busbar supports and phase barriers
- Precision-machined insulating components for military and industrial applications
- Structural insulation components requiring UL Listing and V-0 flame rating
Common industries: Electrical Equipment Manufacturing, Defense, Power Distribution, Electronics, Industrial Manufacturing.
NP510A Glass Epoxy Laminate Sheet is the NEMA Grade FR-4 entry in the Norplex-Micarta glass epoxy laminate line — the most widely specified flame-retardant glass epoxy laminate grade for electrical insulation and structural applications.
Constructed from woven glass fabric impregnated with a brominated epoxy resin system, it delivers a UL 94 V-0 flammability rating, UL Listing (thicknesses greater than 0.029″), and a comprehensive set of specification certifications including IPC 4101/21, making it the standard selection for PCB carriers, busbar supports, switchgear insulation, and electrical fixture components.
The material achieves a compressive strength of 66,000 psi flatwise and bonding strength of 2,300 lb, with a breakdown voltage of 66 kV (Condition A), electric strength of 630 Volts/mil (Condition A), and an arc resistance of 130 seconds. The glass transition temperature is 130°C and the temperature index is 130°C electrical / 140°C mechanical. Dissipation factor at 1 MHz is 0.032 and relative permittivity is 4.80. Moisture absorption is 0.10%.
Certifiable to MIL-I-24768/27 Type GEE-F, ANSI/NEMA IM 60000-2021 Grade FR-4, IEC 60893-3-2 PE GC 202, ASTM D709 Type FR-4, and IPC 4101/21. UL Listed (thicknesses greater than 0.029″).
What differentiates NP510A Glass Epoxy Laminate Sheet from NP500A (G-10)?
NP510A uses a brominated epoxy resin system that achieves a UL 94 V-0 flammability rating and UL Listing, whereas NP500A (G-10) uses a non-brominated resin rated UL 94 HB and is not UL Listed. NP510A also carries a broader set of specification certifications including IPC 4101/21, making it the standard choice wherever flame retardancy, UL Listing, or PCB-level specification compliance is required.
Why does flammability rating matter when selecting a glass epoxy laminate?
The UL 94 V-0 rating means the material self-extinguishes within 10 seconds after the flame source is removed and produces no burning drips — a critical performance requirement for electrical insulation components in enclosed equipment where ignition propagation must be controlled. Applications in switchgear, transformers, and electrical enclosures commonly specify V-0 as a minimum requirement, and UL Listing provides the additional third-party certification many procurement systems require.
What is the temperature index for NP510A Glass Epoxy Laminate Sheet?
The temperature index is 130°C electrical / 140°C mechanical, as listed on the Technical Datasheet.
Is NP510A Glass Epoxy Laminate Sheet suitable for military, PCB, and regulated electrical environments?
Yes. NP510A is certifiable to MIL-I-24768/27 Type GEE-F, ANSI/NEMA IM 60000-2021 Grade FR-4, IEC 60893-3-2 PE GC 202, ASTM D709 Type FR-4, and IPC 4101/21, and is UL Listed for thicknesses greater than 0.029".
How should NP510A Glass Epoxy Laminate Sheet be specified?
Specify grade (NP510A Glass Epoxy Laminate Sheet), thickness, compliance requirements (NEMA FR-4, MIL-I-24768/27, IPC 4101/21, or other applicable standards), dimensional tolerances, and finished format.
