This fabric type follows a distinct diagonal pattern. The 2×2 twill weave is by far the most common carbon fiber fabric used in the automotive industry. Lets first break down the different categories of Carbon Fiber Woven Fabrics. To many potential carbon fiber buyers, determining why a particular type of carbon fiber is used over another can be quite confusing. Carbon fiber fabricators are experts in knowing which fabric to use for which design.A Guide to Understanding CF Weaves and Fabrics - Wednesday, September 10, 2014Ī Guide to Understanding Carbon Fiber Weaves and Fabrics These factors include strength, formability, stability, and crimp. Many factors must be considered when determining which carbon fiber weave should be used for a particular function. Each weave contains unique properties that make it great for use in some designs and not a good choice for others.

These include fish weave, spread tow, braids, unidirectional weave and custom weaves. There are a number of other weaves that can be used to create carbon fiber fabrics. The higher the satin weave number, the more formable and less stable it is. For 5HS, four tows are passed over, and then one under, and 8HS is seven tows passed over and one under. For example, a 4HS weave consists of three tows passed over and then one passed under. The number indicates the total number of tows passed over then under. The most common harness satin weaves are four harness satin (4HS), five harness satin (5HS), and eight harness satin (8HS). Obviously, this means satin weaves also offer less stability than other weaves. When used for carbon fiber composites, satin weaves translate to an ability to easily form around complex contours. Satin weaves have been used for thousands of years to give silk fabric its beautiful draping quality while leaving the fabric smooth and seamless. A 4x4 weave is easier to form than a 2x2 weave, but it also has less fabric stability. It must be handled more carefully than a plain weave fabric to avoid adding distortions to the weave. Twill weave is pliable and can form to complex contours while still maintaining good stability. Therefore, fewer crimps occur, allowing less opportunity for stress points to be created. This over/under weaving creates a distinct diagonal pattern The distance between the tow interlaces in a twill weave is longer than with a plain weave. It stands to reason, then, that a 4x4 weave consists of each tow passing over four tows and then under four tows. In a 2x2 weave, each tow passes over two tows and then under two tows. Twill weave consists of a 2x2 or 4x4 pattern and is the most commonly recognized type of carbon fiber fabric. This harsh crimp can create stress points that cause areas of weakness over time. Therefore, it works well for flat sheets, tubes, and two-dimensional curves.Ĭrimp is the curvature of a single fiber in a weave, and plain weave carbon fiber fabric has a harsh crimp due to the tight interlaces in the tows. However, it is easier to handle without creating distortions in the fabric. Because of its high fabric stability, plain weave carbon fiber fabric doesn’t work well for complex contours because it is not particularly flexible. Fabric stability refers to a material’s ability to maintain its fiber orientation and weave angle. The tows are woven in an over/under pattern, offering tightly interlaced fibers which are highly stable.

Plain weave, or 1x1 weave, carbon fiber fabric is symmetrical and resembles a checkerboard. The most common weaves are plain weave, twill, and harness satin. Carbon Fiber WeavesĬarbon fiber spools are woven into fabrics on a weaving loom.

Each strand of carbon fiber is only about 5-10 microns thick, but the high number of these strong carbon fibers in such a compact space gives carbon fiber materials incredible strength. The 'k' stands for 'thousand,' meaning a 3k tow comprises 3,000 carbon filaments. These tows are then rated according to the number of fibers or filaments they contain, which is commonly referenced as 3k, 6k, 12k, and 48k. The manufacturing process begins by creating bundles of carbon fibers called tows. Carbon fibers are often woven into fabrics after they have been manufactured and sized.

Forged carbon fiber pattern