Properties

STEEL-TWIN is a compact cotton/stainless steel fabric for the protection against high-frequency (HF) radiation. Typical application as curtain.

Special feature: The frontside is made of white cotton, while the backside is densely woven with a stainless steel thread. Despite the high attenuation due to the gray stainless steel threads on the backside, this fabric has a light gray front side!

Good screening attenuation, even at high frequencies!
Excellent cost/performance ratio
Contactable (groundable) to shield LF electric fields
Textile characteristics: Washable, easy to iron and process
Quality grade: Very high

Technical data

Width: 150 cm, +/- 2 cm
Length: Available by the meter
Attenuation: 42 dB, two-layer 55 dB
Color: Frontside light gray, backside silver
Raw materials: 68 % cotton, 16 % polyester, 16 % stainless steel
Weight: 190 g/m²
Dimension stability: +/- 3 %
Surface conductivity: 100-800 ohm / inch (2.54 cm)

Care instructions

Washing up to 60°C
Iron without steam at degree 1
Drying at low temperature
No bleaching
No chemical dry-cleaning
Wash only with our special washing detergent TEXCARE, without enzymes or bleaching agents

Grounding

This product with an electrically conductive surface has to be integrated into the functional-equipotential bonding (FEB). Please find suitable grounding accessories under "Grounding".

Shielding attenuation HF & LF

This product shields high frequency electromagnetic fields (HF). Unless otherwise stated, the indicated dB-values apply to 1 GHz. Measurement from 600 MHz to 40 GHz according to standards ASTM D4935-10 or IEEE Std 299-2006.

This product with an electrically conductive surface shields low-frequency alternating electric fields (LF).

Laboratory & expert report of shielding attenuation up to 40 GHz

We have already invested in our own professional EMV laboratory years ago. We not only use it to create our laboratory screening reports but also to check each batch daily. Additionally, we have all our products checked by an independent, well-respected expert. Double checked for twice the safety. Please find the reports above at the downloads.

Ready for 5G

Some companies offer "special" 5G-products. This products shields all 5G-frequencies, even without advertising this! Find two gray bars in all shielding diagrams with the 5G frequency spectrums FR1 (600 MHz – 6GHz) and FR2 (24 GHz – 40 GHz).