Composition of the material:Copper, 22 - 27% graphite, 3 - 7% solid lubricants.

Characteristics of the production
Electrical brushes of cars starters operating in following conditions: consumption current – 112 А, tension on clamps – 10,7 V.

Physical and mechanical properties of the material:

Characteristics of brushes consisting of the starter of the power 1,08 кWt:

• Porosity – 15 % maximum;
• Compression strength – 16 … 20 MPa
• Transition electrical resistivity – 0,05 … 0,07 mOhm;
• Wear – 0,05 … 0,075 mm;
• Power rating – 1,08 кWт;
• Speed of rotation at maximum value of power – 1 940 min^-1;
• Rotational moment, at maximum value of power – 5,3 Nm;
• Starting power – 0,69 kWt;
• Durability – 40 000 engagings.

An output mastery of developed products:A pilot batch of electrical brushes was produced and tested

Scientific and technical level, novelty: The level of the best domestic and foreign analogues. The patent is in force in CIS countries.