Benchmark · 4 materials
G10 vs FR-4 vs Phenolic XX vs G11
All composite grades — bands show the family's 10th–90th percentile. The best value in each row is in bold; metric first, imperial in gray.
Properties
| Property | G10 | FR-4 | Phenolic XX | G11 |
|---|---|---|---|---|
| Yield strengthMPa | 240 MPa35 ksi | 275 MPa40 ksi | 80 MPa12 ksi | 260 MPa38 ksi |
| Tensile strengthMPa | 310 MPa45 ksi | 310 MPa45 ksi | 95 MPa14 ksi | 340 MPa49 ksi |
| Specific strengthMPa·cm³/g | 130 | 149 | 60 | 141 |
| Densityg/cm³ | 1.85 g/cm³0.067 lb/in³ | 1.85 g/cm³0.067 lb/in³ | 1.34 g/cm³0.048 lb/in³ | 1.85 g/cm³0.067 lb/in³ |
| Max service temp°C | 130 °C266 °F | 130 °C266 °F | 120 °C248 °F | 180 °C356 °F |
| Min service temp°C | -50 °C-58 °F | -40 °C-40 °F | -40 °C-40 °F | -50 °C-58 °F |
| Electrical conductivity% IACS | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator |
| Machinability/100 | Very good75 / 100 | Poor20 / 100 | Very good75 / 100 | Very good75 / 100 |
| Weldability/100 | Not recommended5 / 100 | Not recommended1 / 100 | Not recommended5 / 100 | Not recommended5 / 100 |
| Formability/100 | Not recommended5 / 100 | Not recommended1 / 100 | Not recommended5 / 100 | Not recommended5 / 100 |
| Relative cost | $$$ Premium | $$ Standard | $$$ Premium | $$$ Premium |
| Processes | CNC, Sheet | CNC, Sheet | CNC, Sheet | CNC, Sheet |
Where each grade sits
One track per property; coloured markers are the compared grades, the shaded band is the composite family 10th–90th percentile and the tick its median.
Yield strength240 MPa
81 MPafamily median 175 MPa280 MPa
Tensile strength310 MPa
96 MPafamily median 195 MPa574 MPa
Density1.85 g/cm³
1.34 g/cm³family median 1.5 g/cm³1.85 g/cm³
Hardness (HB equiv.)—
65 HBfamily median 170 HB481 HB
Max service temp130 °C
120 °Cfamily median 130 °C200 °C
Electrical conductivity< 0.001 % IACS
< 0.001 % IACSfamily median < 0.001 % IACS< 0.001 % IACS
Machinability75 / 100
22 / 100family median 75 / 10075 / 100
Relative cost60
60family median 6060
G10FR-4Phenolic XXG11
Strength versus weight
Manufacturing and finishing
| Capability | G10 | FR-4 | Phenolic XX | G11 |
|---|---|---|---|---|
| CNC machining | Yes | Yes | Yes | Yes |
| Sheet metal | Yes | Yes | Yes | Yes |
| Default condition | Epoxy Matrix | Epoxy Matrix | Phenolic Matrix | Epoxy Matrix |
| Min. machined wall | — | — | — | — |
| Best machined surface | — | — | — | — |
| Heat treatments | — | — | — | — |
| Chemical Etching | Yes | Yes | Yes | Yes |
| Dot Peen Marking | Yes | Yes | Yes | Yes |
| Electro-chemical Etching | Yes | Yes | Yes | Yes |
| Embossing / Debossing | Yes | Yes | Yes | Yes |
| Ink Stamping | Yes | Yes | Yes | Yes |
| Laser Marking | Yes | Yes | Yes | Yes |
| Mechanical Engraving | Yes | Yes | Yes | Yes |
| Painting | Yes | Yes | Yes | Yes |
| Vibro Engraving / Scribing | Yes | Yes | Yes | Yes |
Typical handbook values for the default condition, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.