AWS A5.10 ER4145

Filler Metal, Aluminum Brazing — Alloy ER4145

ER4145

Alloy ER4145 was originally developed as a brazing alloy because of its low melting temperature and high fluidity. It provides very low susceptibility to weld cracking when used with 2XXX series alloys or, aluminum-copper, or aluminum-copper-silicon castings. It can be used in elevated temperature service applications. The alloy is often preferred over alloy 2319 when MIG welding because it “wets” out better, provides a brighter looking weld, and produces less smut. It does, however, have lower weld tensile strengths than alloy 2319, and it is not suited for welding high magnesium containing alloys.

Specifications

• AMS 4184