MIL-STD-2219 Fusion Welding for Aerospace Applications S/S by AWS-D17.1The scope of this document is to provide minimum requirements for weld filler materials, workmanship, inspection and record requirements for fusion welding of alloys applicable to aircraft, missiles, other aerospace equipment, their parts and accessories.

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MIL-STD-2219A

w/CHANGE 1

TABLE lll. Shielding gas and material combinations.

Material	Gas 1/
	Argon	Helium	Argon Helium	Argon 2/ Oxygen	Argon Hydrogen	Nitrogen	Carbon Dioxide
Aluminum	A	A	A
Cobalt	A	A	A		A
Copper	A	A	A
Magnesium	A	A	A
Nickel	A	A	A
CRES Steels	A	A	A	A		Backing only
Plain Carbon Steels	A	A	A	A			3/
Low alloy Steels	A	A	A	A
Titanium	A	A	A

Notes:

A = Allowed

1/ Gas compositions and mixtures shall comply with TABLE I.

2/ 8 percent oxygen maximum.

3/ Only permitted on plain carbon steel with a maximum of 0.25 percent nominal carbon.

5.3.5.8 Post weld cleaning

Except as noted in 5.4.4.3 and 5.4.4.4, completed weldments shall be free of visible oxides, flux, spatter, scale, slag, or other foreign matter. Cleaning, if required, shall be in accordance with 5.2.2.2. Welding flux shall be completely removed by appropriate methods. Removal of material during the cleaning operation shall not exceed the allowed tolerances of the end product specification.

5.3.6 Stress relief

When required, stress relief of weldments shall be specified in the welding procedure or the drawing.