TECHNICAL DATA
This page is dedicated to the mechanical, physical, electrical and fire resistance technical data of GRP profiles, as well as the size tolerances related to the ASTM D3917 standard generally applied to thermosetting resin profiles.
The Top Glass internal laboratory is equipped to perform mechanical, fire-resistance and dielectric tests on finish profiles in addition to the acceptance testing of incoming raw materials. We thus ensure compliance to the highest standards in product quality and traceability.
The Top Glass internal laboratory is equipped to perform mechanical, fire-resistance and dielectric tests on finish profiles in addition to the acceptance testing of incoming raw materials. We thus ensure compliance to the highest standards in product quality and traceability.
These tests are important because they ensure compliance with product technical requirements and international standards.
Our qualified technicians determine the main mechanical characteristics such as resilience and resistance to traction, flexion, compression, shearing, and fatigue as well as performing all the dimensional examinations.
In addition to mechanical testing, we use other equipment to run electrical tests, such as measurement of the breakdown voltage to derive an estimate of electrical insulation properties, liquid penetration testing and resistance tracing.
Our qualified technicians determine the main mechanical characteristics such as resilience and resistance to traction, flexion, compression, shearing, and fatigue as well as performing all the dimensional examinations.
In addition to mechanical testing, we use other equipment to run electrical tests, such as measurement of the breakdown voltage to derive an estimate of electrical insulation properties, liquid penetration testing and resistance tracing.
Mechanical properties
PROPERTY |
TEST METHOD |
UNIT |
STANDARD
|
SELF EXTINGUISHING
|
SELF EXTINGUISHING
|
| TENSILE STRENGTH LW | ASTM D638 | MPa | 400 | 400 | 300 |
| TENSILE MODULUS LW | ASTM D638 | GPa | 26 | 26 | 22 |
| TENSILE STRENGTH CW | ASTM D638 | MPa | 30 | 30 | 20 |
| TENSILE MODULUS CW | ASTM D638 | GPa | 8 | 8 | 7 |
| FLEXURAL STRENGTH LW | AST MD790 | MPa | 400 | 400 | 300 |
| FLEXURAL MODULUS LW | EN 13706 (su vasta scala) | GPa | 25 | 25 | 21 |
| FLEXURAL STRENGTH CW | ASTM D790 | MPa | 70 | 70 | 60 |
| FLEXURAL MODULUS CW | ASTM D790 | GPa | 7 | 7 | 6 |
| COMPRESSIVE STRENGTH LW | ASTM D695 | MPa | 220 | 220 | 160 |
| COMPRESSIVE MODULUS LW | ASTM D695 | GPa | 18 | 18 | 15 |
| COMPRESSIVE STRENGTH CW | ASTM D695 | MPa | 70 | 70 | 55 |
| COMPRESSIVE MODULUS CW | ASTM D695 | GPa | 7 | 7 | 6 |
| IN PLANE SHEAR STRENGTH LW | ASTM D2344 | MPa | 30 | 30 | 20 |
| SHEAR MODULUS LW | EN 13706 (full scale) | GPa | 3 | 3 | 2,4 |
| IMPACT STRENGTH (CHARPY) | ISO 179 | kJ/m2 | 170 | 170 | 140 |
| BEARING STRENGTH LW | ASTM D953 | MPa | 170 | 170 | 130 |
| BEARING STRENGTH CW | ASTM D953 | MPa | 70 | 70 | 50 |
| POISSON'S RATIO LW | ASTM D3039 | --- | 0,28 | 0,28 | ---- |
| POISSON'S RATIO CW | ASTM D3039 | --- | 0,12 | 0,12 | ---- |
Physical properties
PROPERTY |
TEST METHOD |
UNIT |
STANDARD
|
SELF EXTINGUISHING
|
SELF EXTINGUISHING
|
| BARCOL HARDNESS | ASTM D2583 | °B | 45 | 45 | 50 |
| SPECIFIC WEIGHT | ASTM D792 | g/cm3 | 1,8 | 1,8 | 2 |
| GLASS CONTENT BY WEIGHT | ISO 1172 | % | 58 | 58 | 48 |
| WATER ABSORPTION | ISO 62 | % | 0,4 | 0,4 | 0,4 |
| COEFFICIENT OF THERMAL EXPANSION | ISO 11359-2 | K-1 | 11X10-6 | 11X10-6 | 9x10-6 |
| THERMAL CONDUCTIVITY | EN 12667 EN 12664 | W/mK | 0,3 | 0,3 | 0,35 |
| TOXICITY INDEX | CEI 2037 part 2 | / | ---- | <2 | <1 |
Electrical properties
PROPERTY |
TEST METHOD |
UNIT |
STANDARD
|
SELF EXTINGUISHING
|
SELF EXTINGUISHING
|
| DIELECTRIC STRENGTH | ASTM D149 | kV/mm | 5 | 5 | 10 |
| DIELECTRIC CONSTANT AT 50 HZ | ASTM D150 | --- | 5 | 5 | 5 |
| LOSS FACTOR AT 50 HZ | ASTM D7028 | --- | 0,05 | 0,05 | 0,2 |
| SURFACE RESISTIVITY | EN 61340 | Ω | 1012 | 1012 | 1012 |
| COMPARATIVE TRACKING INDEX | EN 60112 | V | ---- | ---- | CTI 600 |
VALUES REFER TO GLASSFIBRE REINFORCED PROFILES (Continuous Filament Mat/Roving)IN MATRIX POLYESTER - ACRYLIC PROFILES WITH THICKNESS OVER 3 mm
CW = crosswise - LW = lengthwise
Tolerance for mechanical properties refers to longitudinal direction: ± 10%
The data provided is accurate. However, Top Glass does not assume any liability as to its use.
Dimensional tolerances
SHAPE AND THICKNESS DIMENSIONAL TOLERANCES
A = ± 4% of specified dimension (but not more than 2.39 mm) (see note)
B (wall thickness -open shape) = ± 10% of specified dimension - if the calculated tolerance is less than 0,25 mm the thickness tolerance shall be ± 0,25 mm (see note)
B (flat profiles up to 304.8 till 1981.2 mm) = ± 15% of specified dimension to 3.175 mm thickness - if the calculated tolerance is less than 0,25 mm the thickness tolerance shall be ± 0,25 mm
B (Flat Sheets up to 304.8 till 1981.2 mm) = ± 10% of specified dimension up 3.175 mm thickness but not exceeding ± 1.27 mm max
C (wall thickness - close shape) = ± 20% of specified dimension - if the calculated tolerance is less than 0,25 mm the thickness tolerance shall be ± 0,25 mm (see note)
Note: APPLICABLE TO SHAPES THAT CAN BE INSCRIBED IN A 914.4 mm MAX DIAMETER CIRCLE
STRAIGHTNESS
Rods and square, hexagonal, and octagonal bars – all dimensions:
D = 2.5 mm/m, measured without taking into account the profile weight
Rectangular bars up to 38.07 mm width and to 2.38 mm thickness, included:
D = 4.17 mm/m, measured without taking into account the profile weight
Rectangular bars up to 38.07 mm width and over 2.38 mm thickness:
D = 3.33 mm/m, measured without taking into account the profile weight
Rectangular bars over 38.07 mm width and all thicknesses:
D = 3.33 mm/m, measured without taking into account the profile weight
Open shapes, all dimensions:
D = 4.17 mm/m, measured without taking into account the profile weight
Closed shapes, all dimensions:
D = 2.5 mm/m,
Flat SheetD = 2.5 mm/m,
Measured when weight of pultrusion minimizes the deviation by contact with flat surface
TWIST
LENGTHS OVER 6 m ARE NOT CONSIDERED IN THIS STANDARD
BARS and OPEN SHAPES :
All dimensions and thickness: permitted Y = 3.28°/m twist up to 6. m in length
CLOSED SHAPES:
All dimensions and thicknesses : permitted Y = 3.28°/m twist up to 6 m in length, but not more than 7° total
THE MEASUREMENT MUST BE DONE KEEPING ONE SIDE OF THE PROFILE WELL FIXED ON A FLAT SURFACE AND MEASURING THE ANGLE DEVIATION ON THE OPPOSITE SIDE WHEN THE PROFILE WEIGHT MINIMIZES THE TWIST.
BARS and OPEN SHAPES :
All dimensions and thickness: permitted Y = 3.28°/m twist up to 6. m in length
CLOSED SHAPES:
All dimensions and thicknesses : permitted Y = 3.28°/m twist up to 6 m in length, but not more than 7° total
THE MEASUREMENT MUST BE DONE KEEPING ONE SIDE OF THE PROFILE WELL FIXED ON A FLAT SURFACE AND MEASURING THE ANGLE DEVIATION ON THE OPPOSITE SIDE WHEN THE PROFILE WEIGHT MINIMIZES THE TWIST.
FLATNESS (FLAT SURFACES)
STANDARD BARS, SOLID SHAPES, SEMIHOLLOW SHAPES, AND FLAT SHEET
Width till 25.4 mm
PERMITTED A VERTICAL DEVIATION OF 0.2 mm x W (mm)
Width up to 25.4 mm
PERMITTED A VERTICAL DEVIATION OF 0.008 mm x W (mm) FOR ALL DIMENSIONS IN TERMS OF THICKNESS
IF "W" = 120 mm, THE VERTICAL DEVIATION "D" IS: 0.008 x120 = 0.96 mm
FLAT SHEETS
PERMITTED A VERTICAL DEVIATION OF 0.008 mm x W (mm) 6.35 mm max.
FOR ALL DIMENSIONS IN TERMS THICKNESS
ANGULARITY
Leg thickness up to 19.02 mm included ± 2° THE STANDARD DOES NOT APPLY TO THICKNESS OVER 19.02 mm
SQUARENESS OF END CUT
Profiles over 50.8 mm in diameter or width: ± 1°
Profiles 50. 8 mm inclusive and under in diameter or width: ± 2°
