High Heat Composite · Glass Fiber Reinforced Polymer
G11
G11 is a high heat composite composite — high-temp electrical laminate. Typical values: 260 MPa yield, 1.85 g/cm³, rated to 180 °C. Available for CNC machining, Sheet metal at FabDigit.
Properties
Typical room-temperature values in the Epoxy Matrix condition. Metric first, imperial in gray. The bars show where G11 sits against the other 12 composite grades in the catalog.
Datasheet
| Yield strength | 260 MPa38 ksi |
|---|---|
| Tensile strength | 340 MPa49 ksi |
| Hardness | 110 HRM |
| Density | 1.85 g/cm³0.067 lb/in³ |
| Specific strength (yield ÷ density) | 141 |
| Min service temp | -50 °C-58 °F |
| Max service temp | 180 °C356 °F |
| Electrical conductivity | < 0.001 % IACSinsulator |
| Machinability | Very good75 / 100 |
| Weldability | Not recommended5 / 100 |
| Formability | Not recommended5 / 100 |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other composite grades
Strength versus weight in the composite family
Yield strength against density for every composite grade FabDigit runs. G11 is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to G11. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Better75 / 100 |
|---|---|
| Cutting speed (rough / finish) | — / — |
| Minimum wall | — |
| Minimum internal radius | — |
| Drill depth limit | — |
| Best surface (machined / polished) | Ra — / — |
| Hardenable after machining | — |
Sheet metal
| Formability | Not Recommend5 / 100 |
|---|---|
| Weldability | Not Recommend5 / 100 |
Conditions and tempers
How G11 is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Epoxy MatrixDefault Matrix | Strongest laminate (G-10/FR-4) — structural + electrical parts | — | — | — | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on G11, ranked by how often they make sense for this grade.
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for G11
Coatings and treatments compatible with composite on the processes G11 runs on. Pick them in the quote configurator or call them out on the drawing.
Organic Coating
- Painting
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Vibro Engraving / Scribing
Equivalent designations
Standards and trade names that resolve to G11 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- High Temp Glass Epoxy
- Other
- Garolite G11
Stock forms
Raw-material forms FabDigit sources G11 in.
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.