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Cu-ETP (CW004A)

Copper with a high conductivity for the manufacturing of coil, bar, wire and other electrical components. The oxygen content will create a embrittlement if the copper is heated at a reducing atmosphere. NB : coppers with a specific conductivity are included in the special standards about materials intended for electrical processes. The mechanical properties are identical to the standards' ones suitable to mechanics processes.

Used for the manufacturing of wires, bars, sheets, plates and coils for electrical using, it is the most usual quality. Sometimes it is called "electrolytic" copper.

It is sensitive to heat in reducing atmosphere, that implies some limitations in case of heat treatments and welding, especially with a welding torch.

Chemical compound %

Agent Cu Bi O P Pb Others Mass-volume g/cm3
total not included
Mini:

99,9

-

-

-

-

-

Ag, O

8,9

Maxi:

-

0,0005

0,040

-

0,005

0,03

Mechanical properties of forging parts (EN 12420):
State Hardness HB min. Tensile strength Rm N/mm² min. Conventional elastic limit at 0,2Rp0,2 N/mm² min. Stretching A % min.

M

-

-

-

-

H045

45

(200)

(40)

(35)

Mechanical properties of plates, sheets and coils for general usings (EN1652):
State Thickness Tensile strength Rm N/mm² Conventional elastic limit at 0,2Rp0,2 N/mm² . Stretching Hardness HV
From to min. max. A50mm ep < or = 2,5 A ep > 2,5 min. max.

R200

more than 5

200

250

(max. 100)

-

42

-

-

H040

-

-

-

-

-

40

65

R220

0,2

5

220

260

(max 140)

33

42

-

-

H040

0,2

5

-

-

-

-

-

40

65

R240

0,2

15

240

300

(min. 180)

8

15

-

-

H065

0,2

15

-

-

-

-

-

65

95

R290

0,2

15

290

360

(min. 250)

4

6

-

-

H090

0,2

15

-

-

-

-

-

90

110

R360

0,2

2

360

-

(min. 320)

2

-

-

-

H110

0,2

2

-

-

-

-

-

110

-

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