COPPER ALLOYS
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COPPER ALLOYS
ELECTRODES FOR RESISTANCE WELDING
Edstraco supplies berylliumcopper (CCNB) and chromium-zirconium copper (CCZ) in round bars, flat bars, square bars, hexagonal bars and electrode rolls. We also offer L-profiles, discs and pre-machined details such as spot welding electrodes, sleeves, electrode holders and welding wheels. Larger forged plates and pre-machined details are supplied with short deliverytime. Accessories such as laminated shunts, wired shunts, water cooled conductor cables and welding tools. Several other copper alloys can be supplied.

CCNB (CuCoNiBe), DIN 2.1285 (Mallory 100, Ampcoloy 91, Hovadur CCB)
CCZ (CuCrZr), DIN 2.1293 (Mallory 328, Ampcoloy 972, Hovadur CCZ)
HIGH PRESSURE DIE CASTING
We supply finished pistons, or welded, hardened and turned round bars, if the customer prefers to make the pistons themselves. We offer beryllium copper or copperalloy CNCS, without beryllium. Round bars are supplied in 1000 mm lengths or according to customers requests. CNCS (CuNiCrSi) according to DIN 2.0855 is equavalent to Ampcoloy 940, Hovadur 4 and Cupropress. ELECTRICAL CONTACTS
Edstraco supplies various copper alloys for spark erosion and for electric contacts. It is very important to use the best possible electrode. Electrodes of tungsten-copper have many advantages and are available in five variants. We deliver round bars dia 1-50 mm and flat bars.