Materials: core steel, low carbon steel Q235A (GB13013-91)
Process: clad or copper electro plated
Chemical composition:
C: 0.18%
Mn: 0.28%
Si: 0.009%
P: 0.031%
S: 0.038%
Copper: 99.9% pure copper qualified
Copper thickness: 0.127, 0.254, 0.33, 0.5 and 1.0mm
Tensile strength: 400 to 500MPa
Min yield point: 290 to 300MPa
Minimum elongation: 32 to 38% in 200mm gauge length
Use fixed number of year: above 30 years cannot be influenced by the weather
Standards: ISO 9001:2008, K2010-226