Aluminum 4043
Nominal Chemical
Composition
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
- Welding filler wire
- Spray and flame metallizing wire
- Recommended for welding 3003, 3004, 5052, 6061, 6063, and casting alloys 43, 355, 356, and 214
GENERAL INFORMATION
- Non-Heat treatable
- Principle alloying elements: Silicon
- Bright finish
- ISO designation: AlSi5
Chemical Composition
| Silicon | Iron | Copper | Beryllium | Manganese | Magnesium | Zinc | Titanium | Each | Total Other |
Aluminum |
|---|---|---|---|---|---|---|---|---|---|---|
| 4.5-6.0 | 0.8 | 0.3 | 0.0008 | 0.05 | 0.05 | 0.10 | 0.20 | 0.05 | 0.15 | Remainder |
PHYSICAL and MECHANICAL PROPERTIES
| Melting Range | 1065-1170°F (574-632°C) |
| Density at 68°F | 0.097 lbs./in³ |
| Conductivity | 42 %IACS (-O) |
| Resistance to Corrosion | B (Gen) A (SCC) |
| Anodize Color | Gray |
SPECIFICATIONS MEET OR EXCEED
| ANSI/AWS A5.10 (ER & R 4043) |
| AMS 4190 |
STANDARD SIZES AND DIAMETERS
| Diameters (inches) | Package Form |
|---|---|
| 0.030, 0.035, 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 ALLOY
|
UTS (KSI)
|
UYS (KSI)
|
ELONG (%)
|
UTS (KSI)
|
UYS (KSI)
|
ELONG (%)
|
UTS (KSI)
|
UYS (KSI)
|
ELONG (%)
|
| 2014-T6 | 70 | 60 | 13 | 34 | 28 | 4 | 50 | - | 2 |
| 6061-T4 | 35 | 21 | 22 | 27 | 18 | 8 | 35² | - | 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.
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 | 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.