How to Choose Carbon Fiber Fabric by GSM in one minute.
Carbon fiber fabric GSM, or areal weight, should be chosen by target laminate thickness, ply count, handling, surface appearance and structural requirement.
What the terms mean.
GSM means grams per square meter. In carbon fabric sourcing it describes fabric areal weight before resin impregnation.
Key differences for material selection.
| GSM range | Typical use | Notes |
|---|---|---|
| 90-160 g/m2 | Light cosmetic skins and thin laminates | Fine handling, lower build thickness |
| 200-245 g/m2 | 3K visible parts and general CFRP surfaces | Common automotive and sports range |
| 300-400 g/m2 | Medium laminates and larger panels | Builds thickness faster |
| 600 g/m2 | Heavy reinforcement and industrial laminates | Confirm drape and resin process |
| Custom | Project-specific reinforcement | Requires construction review |
How engineers and buyers should choose.
Choose lower GSM for thin visible skins or small parts.
Choose 200-245 g/m2 for common 3K visible carbon applications.
Choose heavier fabrics when laminate thickness and productivity matter.
Confirm resin process because heavier fabrics may wet out differently.
Where this comparison matters.
Typical values to confirm.
| Specification | Typical options |
|---|---|
| Tow | 1K / 3K / 6K / 12K |
| Weave | Plain / twill / satin / jacquard / spread tow |
| Width | 1000 / 1270 / 1500 mm or custom |
| Documents | TDS / SDS / COA by request |
Product pages to compare next.
Details needed before quotation.
Clear RFQ information helps avoid wrong material selection and repeated emails.
Common technical questions.
Does higher GSM always mean stronger?
Higher GSM adds more fiber per area, but final strength depends on fiber grade, layup, resin, process and load direction.
What GSM is common for 3K twill?
200 g/m2, 240 g/m2 and 245 g/m2 are common 3K twill visible fabric ranges.