Cable Industry
Natural and coated micronized calcium carbonate (CaCO₃) for PVC cable jackets, XLPE insulation and HFFR halogen-free compounds. 10 grades AY 108–AY 318K covering 8–18 microns.
Calcium Carbonate in the Cable Industry
Micronized calcium carbonate (CaCO₃) is one of the most important functional fillers used by the cable industry. Both natural and stearate-coated calcium carbonate are used in cable jacket, insulation and filler compound formulations, directly influencing mechanical strength, flame retardancy, electrical insulation performance and surface quality of the finished cable.
At Aydın Madencilik, we manufacture natural and coated micronized calcium carbonate from our own licensed calcite quarry at our Bursa Gemlik facility. Our cable-grade products are supplied to power cable, telecommunication cable and special cable manufacturers across Turkey and Europe.
PVC Cable Jacket Production
In PVC cable jacket compounds, calcium carbonate is the primary functional filler. It improves mechanical performance, flexibility and flame resistance while optimizing compound cost. Our coated grades — AY 108K (8 µm) and AY 210K (10 µm) — are preferred in PVC cable jacket production thanks to their stearic-acid surface treatment, which delivers excellent polymer compatibility and processability.
PE and XLPE Cable Insulation
In polyethylene (PE) and cross-linked polyethylene (XLPE) cable insulation compounds, coated calcium carbonate reinforces mechanical properties while maintaining electrical insulation performance. Our AY 212K (12 µm) and AY 215K (15 µm) grades offer narrow particle size distribution and high dispersion performance suitable for low-, medium- and high-voltage cable insulation applications.
HFFR — Halogen-Free Flame Retardant Cable Compounds
In halogen-free flame retardant (HFFR / LSZH) cable compounds, calcium carbonate is used together with aluminium trihydroxide (ATH) and magnesium dihydroxide (MDH) to deliver flame-retardant performance and reduced smoke density — a key requirement for EU low-smoke zero-halogen cable standards. Our natural grades AY 108, AY 210 and AY 215 provide an economical filler solution in HFFR formulations for building wire, marine cable and rail-grade cable applications.
Why Choose Aydın Madencilik for Cable-Grade Calcium Carbonate?
High-purity calcite stone extracted from our own licensed quarry sites is continuously quality-controlled in our on-site laboratory. Operating from our 15,000 m² production facility in Bursa Gemlik, Turkey, since 1999, we produce cable-grade calcium carbonate that meets the cable industry’s requirements for high purity, low moisture content and tight particle size distribution. Our proximity to Gemlik Port enables fast maritime shipments to European cable manufacturers in Germany, Italy, Spain, the Netherlands, the United Kingdom and beyond.
Calcium Carbonate Cable Industry Advantages in the Industry
Flame Retardant Performance Support
Used alongside ATH (aluminium trihydroxide) and MDH (magnesium dihydroxide), our calcium carbonate grades support flame-retardant performance and reduce smoke density in HFFR / LSZH cable compounds — meeting EU low-smoke zero-halogen cable standards.
Natural and Coated Grades from a Single Supplier
Both natural and stearate-coated calcium carbonate from the same calcite source. Coated grades for PVC and XLPE jackets; natural grades for HFFR compounds — all from one integrated supplier.
Low Moisture Content
Our controlled production process delivers consistently low moisture content, preventing bubbles and voids during cable extrusion and ensuring defect-free finished cable.
Narrow Particle Size Distribution
German Hosokawa Alpine micronization technology delivers narrow particle size distribution, supporting consistent quality and homogeneous dispersion in critical cable formulations.
European Logistics Advantage
Our Bursa Gemlik facility is adjacent to Gemlik Port, enabling direct maritime shipments to European cable manufacturers in Germany, Italy, Spain, the Netherlands, the United Kingdom and beyond.
Cable Industry Frequently Asked Questions
What is calcium carbonate used for in the cable industry?
Calcium carbonate (CaCO₃) is used in the cable industry as a functional filler in jacket, insulation and filler compound production. It improves mechanical strength, flame retardancy and surface quality while reducing compound cost. Natural calcium carbonate is preferred in HFFR formulations, while coated calcium carbonate is the standard choice for PVC and polyethylene cable compounds.
Which calcium carbonate is used in PVC cable jacket production?
Stearate-coated calcium carbonate is generally preferred for PVC cable jacket compounds. The stearic-acid surface treatment improves PVC resin compatibility and processability. Aydın Madencilik’s AY 108K (8 µm) and AY 210K (10 µm) coated grades are widely used for PVC cable jacket production.
How is calcium carbonate used in HFFR (halogen-free flame retardant) cable compounds?
In HFFR / LSZH cable compounds, calcium carbonate is used together with ATH (aluminium trihydroxide) and MDH (magnesium dihydroxide) as a flame-retardant functional filler. Natural calcium carbonate is the preferred grade in this application. Our AY 108, AY 210 and AY 215 natural grades are designed for HFFR cable formulations that meet EU low-smoke zero-halogen cable standards.
Does calcium carbonate affect the electrical properties of cable insulation?
High-quality micronized calcium carbonate produced under controlled conditions does not negatively affect electrical insulation performance. Low moisture content and high chemical purity preserve electrical properties, making coated calcium carbonate suitable for low-, medium- and high-voltage XLPE cable insulation compounds.
What is your logistics advantage for calcium carbonate supply to European cable manufacturers?
Our facility is located in Gemlik, Bursa, with direct access to Gemlik Port. This enables maritime shipments to European cable manufacturers in Germany, Italy, Spain, the Netherlands, the United Kingdom and beyond, as well as global export markets. Container, big bag and bulk delivery options are available.
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