C18700 Free-machining Copper Bar


Specifications:ASTM B301, B249

Size: 1.5-8000mm

Length: 2500-6000mm

Delivery condition: Heat treated and cold worked

C18700 copper is a low alloyed high conductivity lead-copper for free cutting applications. It has a moderately low melting temperature among wrought coppers and low tensile strength and ductility. The C18700 copper alloy has been widely used for where require high mechanical properties and deformation resistance at high temperature such as: electric connectors, motor and switch parts, screw machine parts requiring high conductivity.

C18700 Equivalent Material

Lead-Copper C18700 CuPb1P CW113C C1870 /


C18700 Chemical Composition

Cu Pb P
Balance 1.0 0.1


C18700 Physical Property

Hardness, Rockwell B ≥65
Melting Point 953°C
Electrical Conductivity (Annealed) 0.557 MS/cm @ 20°C
Thermal Conductivity 377 W/m·K @ 20 °C


C18700 Mechanical Property

Temper Temper code Tensile strength, Mpa Yield strength, Mpa Elongation, %
Half-hard H02 260 205 8-12
Hard H04 330 275 4
260 205 12

Wiho metals is a fully stocked and leading metal manufacturer, supplier, exporters, distributors of steel mill-product in the forms of plate, tubing, bar and rod. The steel products provide by us shall be fabricated from prime quality raw materials and is fully certifiable to industrial specifications like ASTM and ASME or other relevant standards. Wiho metals supply and stock a large inventory of low alloy Copper C18700 (CuPb1P /CW113C /C1870) copper round bar in accordance with ASTM B301 used for free-cutting applications. For more information on our extensive copper alloys inventory, please contact us or fill in the form below.

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