UNS A 94145
Aerospace Material Specification 4184 is aluminum alloy 4145 in two forms of welding wire. Alloy 4145 is developed as a brazing alloy and typically used as a filler metal for gas-tungsten-arc and gas-metal-arc welding of aluminum of similar composition, heat treatment, and corrosion resistance; although, usage is not limited to such applications.
Si Cr Fe Mn Cu Zn Mg Al Other impurity Other Element
9.3-10.7 0.15 max 0.08 max 0.15 max 3.3-4.7 0.20 max 0.15 max Bal 0.05 max each 0.15 max each