Nexalloy ER4043

ER4043 is a 5% Silicon aluminum filler metal that is one of the most widely used aluminum welding alloys for fabrication and general repair in the aluminum welding industry. The smooth running ER4043 is often preferred because of its flowing characteristics and its reduced crack sensitivity over other aluminum welding wires.

ER4043 is available in spools and cut lengths for both MIG and TIG welding and is recommended for base metals 3003, 3004,5052, 6061, 6063 and casting alloys 43, 355, 356 and 214. ER4043 has a melting range of 1065-1170 Fand a density of .097 lbs/ci. Its post anodizing color is gray

  • MIG / TIG
  • Available in all standard diameters and packaging
  • Nexalloy ER4043conforms to: AWS A5.10, CWB

NEXALLOY ER4043A/4943

Nexalloy 4043A/4943 is an alternative alloy to 4043 with 25% higher Ultimate Tensile Strength (UTS) and 50% higher yield strength in the as welded condition. Similar to 4043 it possesses moderate to high strength (35 ksi typical), low melting temperature and high fluidity, low ductility, formability and lower toughness as well as moderate electrical and thermal conductivity. 4043A/4943 may be used to weld 1XXX, 3XXX, 5XXX with less than 3.0% Mg. Common applications include automotive frames, aerospace hardware, bicycles, concrete forms and furniture

  • MIG / TIG
  • Available in all standard diameters and packaging
  • Nexalloy ER4043A/4943 conforms to: AWS A5.10

Diameter Plastic Spool Wire
Baskets
Spool size Basket size
1 lb*
0.4 kg		 5 lbs
2.2 kg		 16 lbs
7.2 kg		 20 lbs
9 kg		 15 lbs
6.8 kg		 18 lbs
8.2 kg
Inches mm
0.030 0.8 * * *
0.035 0.9 * * * * *
0.040 1.0 * * * * *
3/64 1.2 * * * * * *
1/16 1.6 * * * * * *

*1lb spools come in 20lb boxes (20 spools per box)

TIG Rod
Diameter 10 lb box
4.5 kg		 5 lb box
2.3 kg
Inches mm
3/64 1.2 * *
1/16 1.6 * *
3/32 2.4 * *
1/8 3.2 * *
5/32 4.0 * *
3/16 4.8 * *

*10lb boxes come in 50lb master box (5 boxes per master box)
*5lb boxes come in 40lb master box (8 boxes per master box)

Drums
Diameter 50 lbs
22.7 kg		 150 lbs
68 kg		 300 lbs
136 kg		 330 lbs
149kg
Inches mm
0.035 0.9 * * * *
0.040 1.0 * * * *
3/64 1.2 * * * *
1/16 1.6 * * * *