Patent ID: 8603366

Claim:
An electric contact material of a silver matrix capable of resisting arc erosion and containing no cadmium-composite, characterized in that the electrical contact material is comprised of an Ag—(SnO 2 +In 2 O 3 ) composite, the Ag—(SnO 2 +In 2 O 3 ) composite comprises 9-11% of (SnO 2 +In 2 O 3 ), the electrical contact material has a contact resistance of 5-60 milliohms (mohm) and an arc erosion resistance capability of 2*10 3 -10*10 3 times at the conditions of a Vickers hardness (Hv) of 100-150, a measured current of 1-5 amperes and a measured voltage of 10-20 volts, and two electrical contacts maintain an arc erosion resisting capability at the condition of a low contact resistance when the electrical contact material is formed on a surface of a metal substrate of an electric connector.