Environment

Treated Rolled Copper Foil

As the world's leading supplier of treated rolled copper foil, we are helping in the advancement of the flexible printed circuit board industry.

JX Group's rolled copper foil products are produced through an intergrated manufacturing system covering from mining of copper ore to smelting and refining, ingot production, rolling, and surface treatment, within the same group.
Thanks to the stable supply and high quality achieved through this integrated system, we have become the world's top supplier of treated rolled copper foil. Also utilizing this integrated system, we are developing and supplying the broadest range of treated rolled copper foil products to satisfy customer's needs.

RA Product Lineup

foil

Grade Type Features Purity Thickness (µm)
70 35 18 12 9
General TPC Standard
Cu: At least 99.9%

High Functionality HA Static Bendability (high flexibility) Low repulsive force Cu: At least 99.9% Ag: 190 ppm
HA-V2 Static Bendability (high flexibility) Low repulsive force Ease of handling Cu: At least 99.9% Ag: 100 ppm

foil

Grade Type Features Matte Side Roughness (Rz) Shiny Side Roughness (Rz) Nodule-Treated Surface SEM Photograph
General BHY Standard 0.80 µm 0.75µm
High Functionality BHYX Strong Adhesion 0.90µm 0.75µm

Typical Properties

Physical Properties

Type IPC Grade Modulus (GPa) (Resonance method) Electronical Conductivity (% IACS) Resistivity (ohm-gram/m²)
RT After Annealed (180°C /1h)
MD TD MD TD
BHY-T 8 (LTA-W) 105 120 105 100 100 0.154
BHYX-HA 8 (LTA-W) 122 140 76 76 100 0.154

Mechanical Properties

Type IPC Grade Hardness (Hv) Tensile Strength (MPa) Elongation (%)
RT After Annealed (180°C /1h) RT at 180°C After Annealed (180°C /1h) RT at 180°C After Annealed (180°C /1h)
Vickers MD TD MD TD MD TD MD TD MD TD MD TD
BHY-T 8 (LTA-W) 106 58 440 420 193 157 210 160 1 1 2 2 10 6
BHYX-HA 8 (LTA-W) 100 40 500 510 211 89 145 120 2 3 1 1 8 4

Surface Roughness

Type IPC Grade Roughness (µm)
Shiny Side Matte Side
Ra Rz Ra Rz
BHY-T 8 (LTA-W) 0.11 0.75 0.12 0.80
BHYX-HA 8 (LTA-W) 0.11 0.75 0.13 0.90

HA and HA-V2 Foils

  • Have large crystal grain and uniform crystal orientation which dramatically improve the flexibility, vibration resistance and other properties.
  • High functionality treated rolled copper foil realizing outstanding flexibility.
  • Dramatic improvement in vibration resistance.
  • Low repulsive force for high pliability.
  • Excellent cube orientation.

Surface Treatment

  • Fine surface treatment for very low surface roughness.
  • Strong adhesion performance.
  • Very low roughness is achieved also on the matte side.
  • Outstanding high-frequency characteristics, visibility, and fine patterning.