Bronze (Copper-Tin and Copper-Aluminium Alloys)

Bronze differs from brass in its better mechanical properties and higher resistance to corrosion.A distinction is made between the listed wrought alloys (up to 8.5% tin content) and the cast alloys (see cast bronze). Not only copper-tin alloys are regarded as bronzes but also copper-aluminium alloys, e.g. CuAl10Ni5Fe4 are referred to as bronzes („Aluminium bronzes“).

Material code (as per DIN EN) CuSn6 CuSn8 CuAl10Ni5Fe4
Material number (as per DIN EN) CW452K CW453K CW307G
Material code (as per old DIN) CuSn6 CuSn8 CuAl10Ni5Fe4
Material number (as per old DIN) 2.1020 2.1030 2.0966
Other names Tin bronze, SnBz6 Tin bronze, SnBz8 Aluminium bronze, AlBz10Ni, CuAl10Ni, Aeterna WF26
Versions from stock Bleche Rund Vierkant Flach Rohr, Buchse Rund Vierkant Flach Rohr, Buchse
Properties Excellent corrosion resistance, wear resistant, good cold working properties, good spring qualities, good solderability  Higher strength and corrosion resistance than CuSn6, wear resistant, good cold working properties, excellent flexibility, good solderability, good sliding properties High strength even at high temperatures, high fatigue strength even when subject to corrosive stress, excellent wear resistance, corrosion resistant (sea water, neutral, acid and watery media), erosion resistant, cavitation resistant, scale resistant
Use Springs of all types, plug-in connectors, spring pipes, screen wires Bearings, sleeve bearings, sliding guides, suspended components, contact springs Shafts, screws, wear parts, control parts for hydraulic equipment, condenser base plates
Density
(g/cm³) approx.
8,80 8,80 7,60
Data sheet german copper institute CuSn6 CuSn8