1K, Plain Weave Ultralight Carbon Fiber Fabric

When Strength, Stiffness, Minimum Weight are Key

This unique carbon fabric is used in the most demanding applications which call for maximum strength and stiffness, and where minimum weight justifies the added cost. The plain weave construction delivers uniform strength in both horizontal and vertical directions, and provides for excellent stability and easy handling.

This ultralight fabric is suitable for aerospace, UAVs, competition auto and marine, and light industrial applications.

1K, Plain Weave Ultralight Carbon Fiber Fabric Features

• Maximum strength with minimum weight
• 42" wide fabric
• Commercial strength T300 fibers
• High Modulus for superior rigidity
• Fatigue resistance for durable strength

1K, Plain Weave Ultralight Carbon Fiber Fabric Tips

• Ideal for for aerospace, UAVs, competition auto and marine, and light industrial applications.
• To maximize strength properties, use with an epoxy, like our System 2000 Epoxy Resin (#2000).
• For added conformability, lay up the fabric at a 45-degree bias inside molds.
• Great for making rigid precision parts with no bulk

1K, Plain Weave Ultralight Carbon Fiber Fabric Specifications

Warp	1K
Filling	1K
Strength	510-635 KSI
Tensile Modulus	33.0-34.9 MSI
Weave	24 x 24 Plain
Weight	3.5 oz/sq yd
Thickness	0.009"
Full Roll Length	100 yards
Color	Black

Fibre Glast Guarantee

Fibre Glast is committed to ensuring that every roll of fabric we handle is First Quality and manufactured to the highest standards, so that you can expect the same properties and handling characteristics every time you order.

Click here for more information on our First Quality Guarantee.

What is 1K Plain Weave Ultralight Carbon Fiber Fabric?

The 1K Plain Weave Ultralight Carbon Fiber Fabric from Fibre Glast is the lightest weight woven carbon fiber fabric in the entire Fibre Glast lineup, weighing just 3.5 oz/sq yd with a thickness of only 0.009 inches.

This unique fabric is used in the most demanding applications requiring carbon fiber properties and stiffness at minimum weight.

The fabric features 1K carbon tow (1,000 filaments per fiber bundle) woven in a plain weave pattern that provides excellent stability and easy handling during fabrication.

 The T300 multifilament continuous tow delivers exceptional tensile strength of 510-635 KSI and tensile modulus of 33.0-34.9 MSI.

Why Choose 1K Ultralight Carbon Fiber for Precision Applications?

When carbon fiber properties and stiffness are required at absolute minimum weight, the 1K Plain Weave is the optimal choice available. 

The ultra-fine 1K tow creates a tight, uniform weave at 24.0 ends per inch in both warp and fill directions, producing exceptionally smooth cosmetic finishes after cure. 

The 42-inch width at just 3.5 oz/sq yd allows precise control over laminate thickness, making it ideal for applications where every gram of weight matters to final performance.

Plain weave construction provides equal strength in both warp and fill directions for balanced performance in all orientations without directional weakness.

What Are the Best Applications for Ultralight Carbon Fiber?

This fabric excels in applications demanding the highest precision and lowest possible weight.

Common uses include racing drone frames where weight directly impacts flight time and maneuverability, model aircraft structures requiring scale appearance with functional strength, high-end sporting equipment components where grams matter, and aerospace prototypes requiring carbon fiber properties at minimal mass.

The thin profile allows multiple precise layers to be stacked at different orientations to engineer specific directional strength properties while maintaining minimal total laminate weight.

The lightweight construction is also ideal for thin-wall structures and other applications where weight optimization is critical.

How Should Ultralight Carbon Fiber Be Used for Best Results?

The ultralight fabric wets out quickly and easily. For maximum fiber properties and structural performance, epoxy resin such as Fibre Glast System 2000 is recommended.

The tight plain weave is more dimensionally stable during handling than twill weaves and less prone to fraying at cut edges.

Take care during layup as the thin fabric can shift if not properly controlled during wet-out.

Multiple layers at varying angles (0/90/45/-45) create quasi-isotropic laminates with balanced properties in all directions for versatile structural applications.

Fibre Glast is committed to ensuring that every roll of fabric is First Quality and manufactured to the highest standards for consistent quality.

Rolled fabrics ship in a long (45", 53", or 62") box. Click below on the "What to expect when you order Fabric" video to see how rolled fabrics are cut and shipped each time you order.

1K, Plain Weave Ultralight Carbon Fiber Fabric This fabric is sold by the linear yard, either as a prepackaged quantity or by continuous yardage. Prepacks This fabric is available in pre-cut lengths that measure one yard (#2363-A, roll), three yards (#2363-B, roll), and five yards (#2363-C, roll). Each is packaged and sold separately. For your convenience, these "prepacks" can be purchased in any combination. However, if the length for any one fabric totals 10 yards or more, we suggest you purchase it in continuous, "cut to length" yardage. Continuous, "Cut to Length" Yardage If you know in advance that you intend to purchase 10 yards or more of any one fabric, it should be ordered in continuous, "cut to length" yardage. In this case, fabric will be cut once according to the total yardage ordered, and customers receive a price-per-yard discount as compared to prepacks. Quantity discounts continue to deepen as the yardage increases for any one cut of one fabric.