Nominal compositio

En numerical
Cu % Other % Application
CW004A 99,90 min oxygen-containing Oxygen-containing copper. Used for high electrical power requirements. Contact strips, power line wires, switches etc.
CW008A 99,95 oxygen-free Acid-free copper. Used for high electrical power requirements.
CW024A 99,85 min P0,03 De-oxidised acid-free copper for general use such as roofing, interiors, pipes, pressure vessels, etc.

Comparison with previous Swedish and foreign standards

EN numerical
Europanorm Iso
EN Chemical symbols
Sverige SS
CW004A Cu-ETP 5010 Cu-ETP
CW008A Cu-OF 5011 Cu-OF
CW024A Cu-DHP 5015 Cu-DHP

Physical properties – heat treatment

EN Numerical Density g/cm3 Melting temperature °C Length-expansion coefficient 20–300°C (25-100°C) Thermal capacity at 20 °C kJ (kg °C) Resistivity at 20°C for annealed material n Ωm Thermal conductivity at 20°C W/(m•°C) Modulus of elasticity for annealed material N/mm2 Heat forming °C Soft annealing °C Stretch annealing °C
CW004A 8,9 1083 17,7×10-6

16,8×10-6

0,385 17,24 395 118 000 750-900 300-650 150-200
CW008A 8,9 1083 17,7×10-6

16,8×10-6

0,385 17,24 395 118 000 750-900 300-650 150-200
CW024A 8,9 1083 17,7×10-6

16,8×10-6

0,385 25,19 295-365 118 000 750-900 350-650 200-250

Strength

Sheet products

Round bar and round wire

EN Numerical
Grade Thickness

  

Tension limit Rp0,2 Yield point Rm A50 mm HV Grades Dia-
meter
Rp0,2 Rm A HV
CW004A -02 (0,5)-1,5 40-120 220-250 30-45 40-65 -02 (1)-2,5 40-120 210-250 25-50
-04 (0,5)-1,5 180-250 250-290 10-30 75-95 -04 (5)-10 250-350 290-370 8-30 95-110
CW008A -02 (0,5)-1,5 40-120 220-250 30-45 40-65 -02 (1)-2,5 40-120 210-250 25-50
-04 (0,5)-1,5 180-250 250-290 10-30 75-95 -04 (5)-10 250-350 290-370 8-30 95-110
CW024A -02 (0,2)-1,5 40-120 220-250 25-45 40-65
-04 (0,2)-1,5 180-250 250-290 5-30 75-95
-80 (0,2)-1,5 40-120 220-250 40-55 max 55

Round pipe

EN Numerical
Grade Thickness

  

Rp0,2 Rm A5 HV Grades Thickness Rp0,2 Rm A5 HV
CW004A -00 ca 60 ca 230 ca 45 ca 60
-10 120 230- 10- 65-
CW008A -00 ca 60 ca 230 ca 45 ca 60
-04 -5 280-420 310-440 5-20 110-125 -10 120 230- 10- 65-
CW024A -02 40-120 210-250 40-60 40-65
-04 (0,7)-5 280-420 310-460 5-20 100-125

Explanation
Rp 0.2 = 0.2 limit N/mm 2
Rm = tensile strength N/mm2
HV = Vickers hardness
A5 = Elongation % gauge length 5.65 area
A50 mm ≈ Elongation %
A100 mm gauge length 50, each 100 mm