Class: ERTi-5
AWS: A5.16

C = 0.05 max
O = 0.18 max
H = 0.015 max
N = 0.03 max
Al = 5.5-6.7
Va = 3.5-4.5
Fe = 0.30 max
Y = 0.005 max

This alloy is commonly referred to as “6-4” titanium and is probably the most widely used titanium alloy. This alloy is excellent for industrial fans, pressure vessels, aircraft components, and automotive parts. All automatic weld processes can be used. Titanium is a reactive metal that is sensitive to embrittlement by oxygen, nitrogen and hydrogen at temperatures above 500F. This can be provided by shielding the metal with high purity inert gas or in a chamber. Cleanliness of the joint is a major factorin producing porosity free welds. Protection of the wire at all times is required to assure cleanliness. Can be fusion welded to Zirconium, Tantalum, Nobium and Vanadium. Should not be fusion welded to Copper, Iron, Nickel, and Aluminum, as it will produce extremely brittle welds.
Note: AWS previously classified this material as ERTi-6Al-4V