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Aluminium Welding Alloy 4043

Technical Data Sheet

Chemical Composition Limits
Weight%	Al	Si	Fe	Cu	Ti	Zn	Mn	Mg	Others	Others
Alloy 4043	Bal	4.5-6.0	0.60 max	0.30 max	0.15 max	0.10 max	0.15 max	0.20 max	0.05 max each	0.15 max total

Alloy 4043 is one of the oldest and most widely used welding and brazing alloys. AL4043 can be classed as a general purpose type filler alloy. Due to the addition to silicon alloy 4043 results in improved fluidity (wetting action) to make alloy 4043 the preferred choice by welders. Alloy 4043 is less sensitive to weld cracking and brighter and almost smut free welds.

Aluminium MIG and TIG Welding wire and Rods

Used on	1xxx, 3xxx, 6xxx series alloys. 2014, 2219, 5005, 5050, 5052, 7005, 7039, N21. Al-Si, Al-Si-Mg casting alloys and combinations of above materials. Al - Lithium alloys. DTD372B, LM4, LM2, LM6, LM9, LM20, LM25, LM2 .
Cross-Reference of Specifications	MSRR 9500/32 AMS 4190D Aluminium Alloy, Welding Wire N21 (NG21) MSRR 8065 UNS A 9 4043 OMAT 310A Fed-QQ-R-556 Class 4043 Alloy 4043 A (BS 2901 PT4) ER4043, R4043 (AWS A5.10.92)
Availability Ex stock MIG spools and TIG rods	Spools 0.5kg, 2.5kg and 15kg European manufacture Spools 1 lb, 5 lb and 25 lb American manufacture Rods 1 kg, 2.5kg, 5kg and 10kg packs European manuf. 1000mm lengths, Flag tagged for traceability Rods 5 lb American manufacture Flag tagged for traceability For all stock availability contact Sales.
Weld Properties	Melting range 573°- 625°C Density 2.68gm/cc ALLOY 4043 is an Al-5% Si alloy, non-heat treatable. ALLOY 4043 has a lower melting range than the base metals for which it is commonly used and relieves contraction during weld cooling.

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.