Copper Rods (UNS C18900) - Mechanical Properties

Copper UNS C18900 has a copper content of not less than 98.7%.

The following table shows the mechanical properties of UNS C18900 rods as a function of heat treatment and thickness.

Temper Thickness Tensile Str. Yield Str Elong.
O60 3.18mm (0.125in) 262MPa (38ksi) 62MPa (9ksi) 48%

An equivalent material to UNS C18700 copper alloy is MIL E-45829.

The chemical composition of UNS C18700 copper alloy is outlined in the following table.

Element Content (%)
Tin, Sn 0.6-0.9
Silicon, Si 0.15-0.40
Manganese, Mn 0.10-0.30
Zinc, Zn 0.10
Phosphorous, P 0.05
Lead, Pb 0.02
Aluminum, Al 0.01
Copper, Cu Remainder

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