|Filament||The fiber that the average diameter is 5-10Microns.|
|Strand||The basic bundle of continuous fibers that are not twisted.|
|Yarn||Yarn is a long continuous length of twisted filament suitable for use in the production of weaving.|
|Tow||Tow is an untwisted bundle of continuous filaments.|
|Roving||A roving is a long and narrow bundle of fiber. Rovings are produced during the process of making spun yarn from wool fleece, raw cotton, or other fibres. Their main use is as fibre prepared for spinning, but they may also be used for specialised kinds of knitting or other textile arts. After carding, the fibres lie roughly parallel in smooth bundles.
These are drawn out, by hand or machine, and slightly twisted to form lengths suitable for spinning. These unspun strands of fibre are the rovings.
|Glass fiber||3450 ~ 4300||73 ~ 87||2.5||1.4 ~ 1.8|
|Carbon fiber||1900 ~ 5600||230 ~ 760||1.8 ~ 2.1||1.1 ~ 1.3|
|Aramid(Kevlar) fiber||3450 ~ 3620||130 ~ 180||1.46||2.3|
|Metal||Al||260 ~ 410||69 ~ 73||2.71||0.1 ~ 0.15|
|Steel||450 ~ 830||207||7.87||0.06 ~ 0.1|