The introduce of
oxygen free copper tube
Henan Chalco not only produces aluminum tubes of various alloys, but also produces
oxygen free copper tube.
oxygen free copper tube are divided into No. 1 and No. 2
oxygen free copper tube according to the oxygen content and impurity content. The purity of No. 1
oxygen free copper tube reaches 99.97%, the oxygen content is not more than 0.003%, and the total impurity content is not more than 0.03%; the purity of No. 2
oxygen free copper tube reaches 99.95%, the oxygen content is not more than 0.005%, and the total impurity content is not more than 0.05 %.
The
oxygen free copper tube has no hydrogen embrittlement, high conductivity, good processing performance, welding performance, corrosion resistance and low temperature performance. Different countries have different standards for oxygen content, and there are certain differences.
The Chemical composition of
Oxygen Free Copper Tube
according to GB/T 5231-2012
|
Alloy |
Chemical component(%) |
Cu
Ag |
P |
Ag |
Bi |
Sb |
As |
Fe |
Ni |
Pb |
Sn |
S |
Zn |
O |
|
TU1 |
99.97 |
0.002 |
－ |
0.001 |
0.002 |
0.002 |
0.004 |
0.002 |
0.003 |
0.002 |
0.004 |
0.003 |
0.002 |
The Mechanical Properties of
Oxygen Free Copper Tube
according to GBT 1527-2006
|
Alloy |
Temper |
Wall Thickness
(mm) |
Mechanical properties |
|
Tensile Strength（Rm/ Mpa） |
Elongation
A/(%) |
Hardness
HB |
|
standard value |
standard value |
|
|
TU1
|
M2 |
All |
≥220 |
≥40 |
40-70 |
The Surface of
Oxygen Free Copper Tube
The inner and outer surface of the
oxygen free copper tube should be smooth and clean, and there should be no layering, pinholes, cracks, peeling, bubbles, rough drawing and inclusions that affect the use of defects
