Îxygen-free electrotechnical ñopper rod
Copper half-finished products for wire-drawing (rod), marks KLMá À8, ÊLÌá Â8, ÊLÌá Ñ8 are produced according to TU U 27.5-22447150-007-2005-01-01 and meets requirements DSTU GOST 859-2003 (GOST 859-2001) for copper of marks Ì00á, Ì0á.
Nominal diameter of rod – 8 +- 0,4 mm. Rod of class A and B according to chemical composition corresponds to mark of copper not below Ì00á, a class With not lower Ì0á. The maintenance(contents) of oxygen and sulfur no more than 15 ppm. The degree of oxidation of surfaces < 0,01 %.
Specific electric resistance of rod of all classes not more than 0,01724 Om x mm2/m. Relative lengthening of rod not less than 35%.
Durability at stretching not less than 160 Í/ìì2.
Number of twistings in one side before destruction,
for class A – not less than 50,
for a class B – not less than 40,
for class C - not less 35.
The certificate of quality with indication of all parameters and chemical composition is issued on each coil. Average weight of a coil – 3,0 ò.
For preservation of consumer properties each coil is marked, pulled together with a steel tape and packed with a polyethylene stretch-film.