Quartzel® Chopped Strands

Made from fused silica filaments

Quartzel® fiber is a homogeneous, non-porous, continuous, amorphous, ultra-pure silica glass with a SiO2 content 99.95%. Quartzel® chopped strands are produced from either 9µm or 14µm Quartzel® rovings which are chopped to a pre-determined length.


Main properties

Low loss material

Dk = 3.74 & Df = 0.0002 at 10 GHz.

Free of impurities

99.95% of silica content.

Low thermal expension and resistance to thermal shock

CTE= 0.54 10-6 k-1.

Ablative material

Above 1600 °C and extreme heat flow.


Density= 2.2
10% lighter than e-glass.

High elongation

Maximum elongation  ε= 7.7%.

Low shrinkage at HT

Shrinkage after exposure of 1000h at 1000°C < 1.5%.

Product portfolio


Available sizing 

Carton dimensions (mm)

Quantity per carton

Based on ISO 2078 (Europe) US customary system QS1318 (Worldwide)
QS13-QPC1 (US Only)
QSCY1 (Worldwide)
C9 33 - 6 mm  300 6 mm L 650 x W 650 x H 650
5 kg
C9 33 - 12 mm 300 12 mm
C14 80 - 6 mm 125 6 mm
C14 80 - 12 mm 125 12 mm

Available sizings

  • QS1318 and QS13-QPC1 are multipurpose high performance direct sizings, recommended for most textile processes and composite applications. They can be used with thermoset resins and among others : Phenolic, Epoxy, BMI, etc..
  • QSCY1 sizing is designed specifically for optimized compatibility with cyanate ester resin systems.

*Sizing is the chemical agent which aims at protecting the yarns in textile processes as well as providing chemical compatibility with resin matrix in composites.



Dual-use disclaimer: Quartzel®products are all classified as a dual-use commodity by the European and US authorities. Therefore, an export license is required to export these goods to some countries. Our team will support you in this process. Read more about it here.

Safety data sheet (SDS)
Yarn, Roving and Chopped stands Safety data sheet - US plant
PDF | 226.62 KB
7 – 15 micron QUARTZEL® Silica Yarn, Roving, and Chopped