FONTARGEN A/AF 314

FONTARGEN A 850Titanium welding rodAWS A 5.16-90: ER Ti 2 / ER Ti 3Material-no.: 3.7036Composition, typical analysis (% w/w):C N Fe O H Ti Ti0,08 0,05 0,1 0,15 0,013 0,1 RemainderCharacteristics / Applications:Welding of pure titanium, e.g. 3.7035, titanium degree 2 and 3. At comparatively lowtemperatures titanium and titanium alloys are already reacting to atmospheric gases. It isnecessary to obtain absolute cleanliness while welding. By using suitable weldingequipment it has to be guaranteed that the whole welding spot, the seam up-side, as wellas the root side and the edge zones are protected from air; even during cooling down toless than 300°C. For argon welding choose conditions to ensure a metallic cleanwelding seam. Annealing colours like blue or yellow are also tolerable in some cases.Hardening and brittleness at the welding seam are a result of absorption of impurities.Thorough cleaning of the welding seam, edge zones as well as welding filler beforewelding is essential. Cut off brittled wire. The hardness of the welding seam has to bechecked after welding. The hardening should not exceed 50 Brinell compared to thebase material. Stress-relief annealing heat treatment after welding is not required, ifhigher residual welding stresses are to be expected due to material thickness orconstruction. Unalloyed titanium quality with medium hardness and good elongation.Mechanical properties of pure welding deposit(Min. values at room temperature):Tensile strength:390 N/mm²Elongation limit (0.2%):250 N/mm²Breaking elongation: 20 %Hardness (weld seam):120 HBWelding process:TIG and plasma welding with pure argon99,998 - 99,999 % dew-point under -50°CWelding current:Direct current (-pole)wire diameter: 1.5 mm 35 – 60 ampere*wire diameter: 1.5 mm 70 – 80 ampere**depends on thickness of plateGas consumption:For TIG arc: 12 – 14 l/min.Backing strip: 1 – 2 l/min.Availability: Diameter (mm): 1,0/1,6/2,0/2,4/3,0Length (mm): 1000Welding position: according to DIN EN 287PA PB PC PD PE PF PG06/08/Eb/0204