HYW ER4047 TIG welding rod is a high-silicon aluminum-silicon (Al-12%Si) filler supplied as 36" straight cut lengths for GTAW (TIG) and torch brazing. Its low melting range and excellent fluidity make it the preferred filler for aluminum brazing and for repairing cast aluminum components. Select your diameter and bundle size from the dropdown.
› Aluminum brazing and cladding on 1100 / 3003 aluminum
› 6xxx-series extrusions where a free-flowing, low-melt filler is an advantage
Technical Specifications
AWS Classification
ER4047 (AWS A5.10)
Alloy
Aluminum-Silicon (~12% Si)
Process
GTAW (TIG) / Torch Brazing
Form
36" straight cut length
Shielding Gas
100% Argon (Ar/He for thicker sections)
Diameters
1/16", 3/32", 1/8"
Store rod in a dry location and keep tubes sealed to avoid surface oxidation.
Typical Chemical Composition
Typical filler analysis (wt %) per AWS A5.10. Single values are maximums; aluminum is the balance.
Element
Typical Wire (wt %)
Silicon (Si)
11.0 – 13.0 (typ. 12.0)
Iron (Fe)
0.80 max
Copper (Cu)
0.30 max
Manganese (Mn)
0.15 max
Magnesium (Mg)
0.10 max
Zinc (Zn)
0.20 max
Aluminum (Al)
Balance
Mechanical Properties
Typical as-welded all-weld-metal properties (4047 / Al-12%Si). Verify against mill cert for critical applications.
Tensile Strength
typ. 27,000 psi (186 MPa)
Elongation
typ. 5%
Brinell Hardness
typ. 50 HB
Melting Range
typ. 1070 – 1080 °F (577 – 582 °C)
WARNING
This product can expose you to chemicals including manganese, which is known to the State of California to cause birth defects or other reproductive harm. Welding fumes from this product can also expose you to chemicals known to cause cancer. For more information go to www.P65Warnings.ca.gov.
