Benchmark · 4 materials
Kevlar vs G11 vs G7 vs G5
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 | Kevlar | G11 | G7 | G5 |
|---|---|---|---|---|
| Yield strengthMPa | 280 MPa41 ksi | 260 MPa38 ksi | 110 MPa16 ksi | 90 MPa13 ksi |
| Tensile strengthMPa | 1,100 MPa160 ksi | 340 MPa49 ksi | 100 MPa15 ksi | 100 MPa15 ksi |
| Specific strengthMPa·cm³/g | 194 | 141 | 65 | 63 |
| Densityg/cm³ | 1.44 g/cm³0.052 lb/in³ | 1.85 g/cm³0.067 lb/in³ | 1.7 g/cm³0.061 lb/in³ | 1.42 g/cm³0.051 lb/in³ |
| Max service temp°C | 200 °C392 °F | 180 °C356 °F | 220 °C428 °F | 120 °C248 °F |
| Min service temp°C | -50 °C-58 °F | -50 °C-58 °F | -50 °C-58 °F | -40 °C-40 °F |
| Electrical conductivity% IACS | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator | < 0.001 % IACSinsulator |
| Machinability/100 | Poor20 / 100 | Very good75 / 100 | Very good75 / 100 | Very good75 / 100 |
| Weldability/100 | Not recommended5 / 100 | Not recommended5 / 100 | Not recommended5 / 100 | Not recommended5 / 100 |
| Formability/100 | Not recommended5 / 100 | Not recommended5 / 100 | Not recommended5 / 100 | Not recommended5 / 100 |
| Relative cost | $$$ Premium | $$$ Premium | $$$ Premium | $$$ 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 strength280 MPa
81 MPafamily median 175 MPa280 MPa
Tensile strength1,100 MPa
96 MPafamily median 195 MPa574 MPa
Density1.44 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 temp200 °C
120 °Cfamily median 130 °C200 °C
Electrical conductivity< 0.001 % IACS
< 0.001 % IACSfamily median < 0.001 % IACS< 0.001 % IACS
Machinability20 / 100
22 / 100family median 75 / 10075 / 100
Relative cost60
60family median 6060
KevlarG11G7G5
Strength versus weight
Manufacturing and finishing
| Capability | Kevlar | G11 | G7 | G5 |
|---|---|---|---|---|
| CNC machining | Yes | Yes | Yes | Yes |
| Sheet metal | Yes | Yes | Yes | Yes |
| Default condition | Epoxy Matrix | Epoxy Matrix | Silicone Matrix | Melamine 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.