Aufhauser
Corporation
39 West Mall
Plainview, NY 11803
Telephone:
516-694-8696
Aluminum 4043 800-645-9486
Fax:
516-694-8690
¨ INTRODUCTION
Aufhauser Aluminum 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. The silicon additions result in improved fluidity
(wetting action) to make the alloy a preferred choice by welders. The alloy is less sensitive to weld cracking and
produces brighter, almost smut free welds.
¨ APPLICATIONS ¨ GENERAL INFORMATION
- Welding filler wire - Non-Heat treatable
- Spray and flame metallizing wire - Principle alloying elements: Silicon
- ISO designation: AlSi5
¨ CHEMICAL COMPOSITION
Others
Silicon Iron Copper Beryllium Manganese Magnesium Zinc Titanium Each Total Aluminum
4.5-6.0 0.8 0.30 0.0008 0.05 0.05 0.10 0.20 0.05 0.15 Remainder
Note: All values are maximum percentage, unless shown in range.
¨ PHYSICAL PROPERTIES
Melting Range: 1065-1170°F
Density, at 68°F: 0.097 lb/in3
Conductivity: 42% IACS (-O)
Resistance to Corrosion: B (Gen) A (SCC)
Anodize Color: Gray
¨ SPECIFICATIONS MEET or EXCEED ¨ STANDARD SIZES AND DIAMETERS
- ANSI/AWS A5.10 (ER & R 4043) Diameters Package Form
- AMS 4190 .030, .035, 3/64, 1/16, 3/32, 1/8 4 & 12 in. Spools
1/16, 3/32, 1/8, 5/32, 3/16, 1/4 Straight lengths
¨ TYPICAL MECHANICAL PROPERTIES OF GTAW GROOVE JOINT WELDS
BASE ALLOY AS WELDED POST WELD HEAT TREAT AND AGE1
BASE UTS (KSI) UYS (KSI) ELONG (%) UTS UYS ELONG (%) UTS (KSI) UYS (KSI) ELONG (%)
ALLOY (KSI) (KSI)
2014-T6 70 60 13 34 28 4 50 - 2
2
6061-T4 35 21 22 27 18 8 35 - 82
6061-T6 45 40 12 27 18 8 44 40 5
6063-T4 25 22 22 20 10 12 30 - 13
1) Requires sufficient dilution of base metal into weld pool for heat treat and/or age response. Refer to alloy 4643 data sheet for additional
information.
(2) postweld aged only.
AL4043: Aluminum 4043 www.brazing.com
Aufhauser
Corporation
39 West Mall
Plainview, NY 11803
Telephone:
516-694-8696
Aluminum 4043 800-645-9486
Fax:
516-694-8690
¨ TYPICAL GMAW PARAMETERS
Base
Wire Consumption
Range material Suggested Wire feed Gas flow
diameter 100 ft of weld
thickness
Inches Amps Volts Inches Amps Volts Ipm Cfh pounds
0.030 60-170 13-24 0.062 90 22 260 25 1.5
0.094 110 23 320 1.8
0.125 130 23 380 2
0.187 150 24 430 4
0.250 175 24 510 6
0.035 70-180 15-26 0.062 90 23 250 35 1.5
0.125 130 24 360 2
0.250 170 25 470 6
0.047 140-260 20-29 0.094 110 25 215 45 1.8
0.125 150 26 290 2
0.250 190 26 370 6
0.375 220 27 430 16
0.062 190-350 25-30 0.250 200 26 190 55 6
0.375 230 27 215 16
0.500 260 28 240 30
0.750 280 29 261 50
1.000 300 30 280 105
0.094 280-400 26-31 0.500 280 28 170 65 30
0.750 290 29 175 50
>1.000 300 30 180 150+
NOTE: Parameters based on flat position, groove joint, backing strip, and 100% argon gas.
AL4043: Aluminum 4043 www.brazing.com
