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Round copper bars
Copper bars are semi-finished products obtained by hot pressing and cold drawing, having:
- a)Cu-ETP – high electrical and thermal conductivity and excellent plastic deformation properties. For this type of copper special precautions are required when heat treating, welding or brazing in a hydrogen atmosphere to prevent hydrogen embrittlement.
- b)Cu-DHP – has excellent welding, bonding and plastic deformation properties both hot and cold.
COMMON AREAS OF USE FOR ROUND COPPER BARS:
- for the construction of electrical and mechanical equipment,
- raw material for pressure and resistance spot welding (contact electrode),
- in construction,
- art and architecture.
ALLOYS COMMONLY USED IN EXTRUDED COPPER BARS
- Execution Standard
EN 12163 Copper and copper alloys – round bars for general applications Cu-DHP Drawn bars EN 12165 Copper and copper alloys - forged bars Cu-ETP, Cu-DHP Extruded bars EN 13601 Copper and copper alloys - bars for electrotechnical applications Cu-ETP Drawn and extruded bars
- Chemical composition
ALLOY EURONORM NO Cu% Sn% P% Ag% O% Cu-ETP CW004A 99,90 - - 0,0025 0,040 Cu-DHP CW024A 99,90 - 0,015 - 0,040 0,0025 -
- Physical properties
ALLOY EURONORM NOE DENSITY, G/CM³ ELECTRICAL
CONDUCTIVITYTHERMAL CONDUCTIVITY MODULUS OF ELASTICITY MS/m %IACS W/mK kN/m² Cu-ETP CW004A 8,94 58 100 390 127 Cu-DHP CW024A 8,94 46 79 340 132
- Mechanical properties
DELIVERY CONDITION EN 12163 EN 12165 EN 13601 DIN 40500 DIN 17672 Cu-DHP Cu-ETP, Cu-DHP Cu-ETP E-Cu57 SF-Cu EXTRUDED - M - p - DRAWN (WITHOUT MEASUREMENT OF MECHANICAL PROPERTIES) M M M zh zh SOFT R200 H035 - R200 H035 F20 F20- F22 ½ HARD R230 - R250 H065 - R230 - R250 H065 F25 F24 HARD R260 H075 - R260 H075 F30 F29
- Dimensional specification
DIAMETER, MM STANDARD MANUFACTURING LENGTH, MM 8 - 150 mm Drawn bars 3000 38 - 230 mm Extruded bars 3000 NOTE: COPPER BARS OF CU-OF AND CU-HCP ALLOYS CAN BE SUPPLIED ON REQUEST
