SAE AMS 4954G pdf download
SAE AMS 4954G pdf download.Titanium Alloy, Welding Wire 6Ai – 4v.
1.1 Form:
This specification covers a titanium alloy in the form of welding wire.
1.2 Application:
This wire has been used typically as filler metal for gas-metal-arc and gas-tungsten-arc welding of titanium alloys, but usage is not limited to such applications.
2. APPLICABLE DOCUMENTS:
The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.
AMS 2249 ChemIcal Check Analysis Limits. Titanium and Titanium Alloys
AMS 2813 Packaging and Marking of Packages of Welding Wire, Standard Method
AMS 2814 Packaging and Marking of Packages of Welding Wire. Premium Method
AMS 2816 Identification, Welding Wire, Tab Marking Method
AMS 2819 Identification, Welding Wire, Direct Color Code System
ARP1 876 Weldability Test for Weld Filler Metal Wire
ARP4926 Alloy Verification and Chemical Composition Inspection of Welding Wire
3.1.3 When ASTM E 1409 and ASTM E 1447 are used, sample sizes larger than those recommended may be used.
3.2 Melting Practice:
Alloy shall be multiple melted; melting cycle(s) prior to final melting cycle shall be made using consumable electrode, nonconsumable electrode, electron beam, or plasma arc melting practices. The final melting cycle shall be made under vacuum using consumable electrode practice with no alloy additions permitted.
3,2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be argon and/or helium at an absolute pressure not higher than 1000 mm of mercury.
3.2.2 The electrode tip for nonconsurnable electrode melting shall be water-cooled copper.
3.3 Condition:
Cold drawn, bright finish, in a temper and with a surface finish which will provide proper feeding of
the wire in machine welding equipment.
3.4 Fabrication:
3.4.1 Wire shall be formed from rod or bar descaled by a process that does not affect the composition of the wire. Surface irregularities inherent with a forming process that does not tear the wire surface are acceptable provided the wire conforms to the tolerances of 3.7.
3.4.2 In-process annealing, if required between rolling or drawing operations, shall be performed in a vacuum or in protective atmosphere to avoid surface oxidation and adsorption of other extraneous elements.
3.4.3 Butt welding is permissible provided both ends to be joined are either alloy verified using a method or methods capable of distinguishing the alloy from all other alloys processed within the facility, or the repair is made at the wire processing station. The butt weld shall not Interfere with the uniform, uninterrupted feeding of the wire in machine welding equipment.
3.4.4 Drawing compounds, oxides, dirt, oil, and other foreign materials shall be removed by cleaning processes which will neither result in pitting nor cause gas absorption by the wire or deposition of substances harmful to welding operations.
Residual elements and dissolved gasses picked up during wire processing that can adversely affect the welding characteristics, the operation of the equipment, or the properties of the weld metal, shall be removed.
3.5 Properties:
Wire shall conform to the following requirements:
3.5.1 Weldability: Melted wire shall flow smoothly and evenly during welding and shall produce acceptable welds. ARP1876 may be used to resolve disputes.
3.5.2 Spooled Wire: Shall conform to 3.5.2.1 and 35.2.2.
3.5.2.1 Cast: Wire, wound on standard 12-inch (305-mm) diameter spools, shall have imparted to it a curvature such that a specimen sufficient in length to form one loop with a 1-inch (25-mm) overlap, when cut from the spool and laid on a fiat surface, shalt form a circle 15 to 50 inches (381 to 1270 mm) in diameter.
3.5.2.2 Helix: The specimen on which cast was determined, when laid on a flat surface and measured between adjacent turns, shall show a vertical separation not greater than 1 inch (25 mm).
3.6 Quality:
Wire, as received by purchaser, shall be uniform in quality and condibon, sound, and free from foreign materials and from imperfections detrimental to welding operations, operation of welding equipment, or properties of the deposited weld metal.
