INTRODUCTION

Aufhauser Aluminum 5556 was first utilized in 1956. It develops the highest as-welded strengths in fillet welds, which is nearly double that of AL4043. The 5XXX series of alloys offer an excellent combination of corrosion resistance, strength, toughness, workability, and weldability. As a result, they are used in a wide variety of applications. A characteristic of this series of alloys, however, is its susceptibility to stress corrosion cracking when the weld pool chemistry is greater than 3% magnesium and there is exposure to prolonged temperatures in excess of 150°F. Special alloys and tempers are often required to overcome this problem.

 

APPLICATIONS

• Welding filler wire

 

GENERAL INFORMATION

• Non-Heat treatable
• Principle alloying elements: Magnesium, Manganese, Chromium, Titanium
• ISO designation: AlMg3Mn (A)

 

Chemical Composition

Silicon	Iron	Copper	Beryllium	Manganese	Magnesium	Zinc	Titanium	Chromium	Each	Total Other	Aluminum
0.25	0.40	0.10	0.0008	0.50-1.0	4.7-5.5	0.25	0.05-0.20	0.05-0.20	0.05	0.15	Remainder

 

TYPICAL MECHANICAL PROPERTIES OF GMAW GROOVE JOINT WELDS

	BASE ALLOY			AS WELDED
BASE ALLOY	UTS (KSI)	UYS (KSI)	ELONG (%)	UTS (KSI)	UYS (KSI)	ELONG (%)
5456-H112	46	24	22	45	23	14

 

TYPICAL GMAW PARAMETERS

Wire diameter	Range		Base material thickness	Suggested		Wire feed	Gas flow	Consumption 100 ft of weld
INCHES	AMPS	VOLTS	INCHES	AMPS	VOLTS	IPM	CFH	POUNDS
0.030	60-170	13-24	0.062	90	21	350	35	1.5
			0.094	100	22	560		1.8
			0.125	120	22	670		2
			0.187	140	23	670		4
0.035	70-180	15-26	0.062	100	21	350	35	1.5
			0.125	130	22	420		2
			0.250	170	23	640		6
0.047	140-260	20-29	0.094	100	22	150	45	1.8
			0.125	150	23	220		2
			0.250	190	24	320		6
			0.375	220	25	400		16
0.062	190-350	25-30	0.250	200	23	200	55	6
			0.375	230	24	220		16
			0.500	260	26	270		30
			0.750	280	27	300		50
			1.000	300	28	320		105
0.094	280-400	26-31	>1.000	350	30	180	60	105+

NOTE: Parameters based on flat position, groove joint, backing strip, and 100% argon gas.