Titanium need not be all that hard to weld! In industrial sectors the common opinion is that titanium alloys are difficult to weld. While it is true that titanium alloys can be embrittled by carless welding techniques, it is equally true that these materials are much more weldable than their reputation suggests.
This reference guide discusses the difficulties that originate from several basic sources when welding titanium and titanium alloys. The high reactivity of titanium with other materials, poor cleaning of parts before joining, and inadequate protection during welding can lead to contamination, porosity and embrittlement of the completed joints.