Miniature electrical contact of high thermal stability

A male electrical contact of twist-pin type, comprising:

• an electrical terminal formed by a bundle comprising three central strands made of copper and 7 peripheral strands made of Ni—Cr—Ti—Al alloy and a bulge in the central portion,
• the male electrical contact further including a cylinder and an electrical wire, an end of the electrical terminal being inserted into the cylinder, and the cylinder being provided with the electrical wire,
• wherein the Ni—Cr—Ti—Al alloy consists of, as a percentage by weight relative to a total weight of the alloy:
• chromium:
• 15%-25%;
• titanium:
• 1.5%-3.5%;
• cobalt:
• 0-25%;
• aluminum:
• 1%-2%;
• molybdenum:
• 0-11%;
• nickel:
• balance;
• and
• unavoidable impurities selected from the group consisting of Ag, B, Bi, C, Cu, Fe, Mn, P, Pb, S, Si, Zr and mixture thereof,
• wherein the three central strands made of copper are welded with the 7 peripheral strands made of Ni—Cr—Ti—Al alloy,
• wherein the three central strands are assembled with a pitch of between 1 and 5 mm left, and the 7 peripheral strands are assembled around with a pitch of between 1 and 5 mm right,
• wherein the bundle is coated with an electrolytic gold layer having a thickness of at least 2.6 μm, and
• wherein the male electrical contact is configured to transmit electric current.