General Information
- Product Name: Fiberglass Molded Grating
- Material Composition: Glass fiber reinforced with unsaturated polyester, vinyl ester, or phenolic resin.
- Manufacturing Process: Open mold casting process with compression molding.
- Standard Sizes:
- Panel Sizes: 1,220 mm x 3,660 mm (4' x 12'), 1,000 mm x 4,000 mm (custom sizes available)
- Thickness: 25 mm (1"), 30 mm (1.25"), 38 mm (1.5"), 50 mm (2")
- Mesh Size: 38 mm x 38 mm (1.5" x 1.5"), 50 mm x 50 mm (2" x 2")
- Surface Options: Plain, Gritted, Covered, Anti-slip
Mechanical Properties
| Property |
Unit |
Standard Polyester |
Vinyl Ester |
Phenolic |
| Tensile Strength |
MPa (psi) |
103 (15,000) |
123 (17,900) |
69 (10,000) |
| Flexural Strength |
MPa (psi) |
206 (30,000) |
239 (34,700) |
138 (20,000) |
| Flexural Modulus |
GPa (psi) |
9.8 (1.4 x 10^6) |
11.1 (1.6 x 10^6) |
5.5 (8 x 10^5) |
| Compressive Strength |
MPa (psi) |
172 (25,000) |
207 (30,000) |
138 (20,000) |
| Impact Strength (Notched) |
kJ/m² (ft-lb/in²) |
26.9 (13) |
32 (15) |
19.7 (9.5) |
| Shear Strength |
MPa (psi) |
104 (15,100) |
120 (17,400) |
90 (13,000) |
| Barcol Hardness |
- |
40 - 50 |
45 - 55 |
35 - 45 |
Thermal Properties
| Property |
Unit |
Standard Polyester |
Vinyl Ester |
Phenolic |
| Heat Deflection Temperature (HDT) |
°C (°F) |
65 (149) |
100 (212) |
220 (428) |
| Coefficient of Thermal Expansion |
cm/cm/°C (in/in/°F) |
9.0 x 10⁻⁶ (5.0 x 10⁻⁶) |
7.5 x 10⁻⁶ (4.2 x 10⁻⁶) |
12.0 x 10⁻⁶ (6.7 x 10⁻⁶) |
Physical Properties
| Property |
Unit |
Standard Polyester |
Vinyl Ester |
Phenolic |
| Density |
g/cm³ (lb/in³) |
1.8 (0.065) |
1.9 (0.068) |
1.7 (0.062) |
| Water Absorption (24 hours) |
% |
0.10 |
0.05 |
0.15 |
| Fire Resistance (UL 94) |
- |
HB or V-0 |
V-0 |
V-0 |
Chemical Resistance
| Chemical |
Standard Polyester |
Vinyl Ester |
Phenolic |
| Hydrochloric Acid (10%) |
Good |
Excellent |
Excellent |
| Sodium Hydroxide (20%) |
Good |
Excellent |
Good |
| Sulfuric Acid (50%) |
Fair |
Excellent |
Excellent |
| Acetic Acid (5%) |
Fair |
Good |
Excellent |
| Ammonium Hydroxide (10%) |
Excellent |
Excellent |
Good |
| Sea Water |
Excellent |
Excellent |
Good |
| Gasoline |
Good |
Good |
Excellent |
Load and Deflection Data (for 38 mm (1.5") thick grating with 38 mm (1.5") mesh)
| Load Condition |
Span (mm) |
Deflection (mm) |
Allowable Load (kN/m²) |
| Concentrated Load |
600 |
5 |
50 |
| Uniform Load |
900 |
10 |
40 |
| Concentrated Load |
1200 |
15 |
35 |
Standard Colors
- Yellow
- Gray
- Green
- Custom colors available upon request
Available Grating Types
- Square Mesh Grating: Standard for most applications, offering excellent strength and load distribution.
- Mini Mesh Grating: Smaller mesh size for better foot traffic support, ideal for pedestrian applications.
- Covered Grating: Provides a solid top surface, often used in environments requiring spill containment or improved cleanliness.
- Conductive Grating: Made with conductive materials to prevent static buildup, suitable for applications in explosive environments.
Certifications and Standards
- ASTM E84: Surface Burning Characteristics of Building Materials
- UL 94: Standard for Flammability of Plastic Materials
- ASTM D635: Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position
- ANSI/NAAMM MBG 531-00: Molded, Machine Molded and Pultruded FRP Gratings
Applications
Fiberglass molded grating is designed for use in a wide variety of applications, including:
- Industrial Flooring: Suitable for platforms, walkways, and trench covers.
- Water Treatment: Corrosion-resistant in wastewater and chemical treatment plants.
- Marine Applications: Ideal for docks, ship decks, and offshore platforms due to its resistance to saltwater.
- Food Processing: Easy to clean and resistant to moisture and chemicals, meeting strict hygiene standards.
- Chemical Plants: Resistant to a wide range of aggressive chemicals, making it suitable for chemical handling and storage areas.
Conclusion
Fiberglass molded grating is a versatile, durable, and cost-effective solution for many industries, offering excellent corrosion resistance, high strength-to-weight ratio, and long service life. Whether used in harsh chemical environments, marine applications, or industrial flooring, this grating provides superior performance with minimal maintenance.
For additional technical information or custom requirements, please contact your supplier.
