ER4047 TIG Rod
COREWELD 4047 ER4047 TIG Rod is an aluminium-silicon filler metal built for suitable aluminium welding applications. The rod carries a high silicon content near 12%, which lowers its melting range and increases weld pool fluidity compared with standard aluminium fillers. Fabricators and repair shops reach for this ER4047 TIG rod when a joint requires smooth bead flow and reduced hot cracking risk on compatible base metals. COREWELD manufactures the rod for GTAW (TIG) processes across workshop and field repair settings, with technical guidance available for alloy-specific selection.
COREWELD 4047 Product Datasheet
Understanding ER4047 TIG Rod
ER4047 is an AWS classified aluminium-silicon filler metal containing approximately 12% silicon, among the highest silicon levels in the 4xxx filler series. This composition lowers the melting range and improves fluidity during TIG welding, letting the weld pool wet out evenly across the joint. Compared with ER4043, the extra silicon in ER4047 welding wire gives it a narrower solidification range, which can reduce susceptibility to hot cracking on suitable alloys. Some fabricators also use it for selected brazing related or joining applications, subject to the applicable product guidance. Filler metal selection always depends on the base alloy, joint design, and service requirements.
Technical Specifications of COREWELD 4047
The table below summarises the core specifications of the COREWELD 4047 ER4047 TIG Rod. Confirm every data point against the official datasheet before use in a procurement document or welding procedure specification, since dimensional and packaging details are order specific.
Brand
COREWELD 4047
Product Name
ER4047 TIG Rod
AWS Classification
ER4047
Material Type
Aluminium-Silicon Filler Metal
Nominal Silicon Content
Approximately 12%
Welding Process
TIG (GTAW)
Applicable Standard
AWS A5.10 / ASME SFA-5.10, subject to certification
Base Material Compatibility
Aluminium-silicon casting alloys and select wrought alloys, per base metal guidance
Reach out to Metracore Alloys Private Limited for reliable ER4047 TIG Rod Solutions
Chemical Composition and Mechanical Properties of ER4047
Chemical composition and mechanical properties both shape how a filler metal performs in service. Silicon content controls fluidity and melting range, while trace elements such as iron and copper influence weldability. Mechanical properties like tensile strength and elongation depend heavily on the base alloy, joint design, and welding procedure, so weld metal performance can vary between two joints made with the same filler. The tables below are a starting reference point only.
Chemical Composition of ER4047
ER4047 draws its performance from a silicon rich aluminium base, with limits set under AWS A5.10.
| Element | Composition |
| Silicon (Si) | 11.0% – 13.0% |
| Iron (Fe) | 0.8% max |
| Copper (Cu) | 0.30% max |
| Manganese (Mn) | 0.15% max |
| Magnesium (Mg) | 0.10% max |
| Zinc (Zn) | 0.20% max |
| Aluminium (Al) | Remainder |
Confirm the exact limits against the applicable AWS specification and COREWELD 4047 datasheet before publication.
Mechanical Properties of ER4047 Weld Metal
Weld metal properties shift with base alloy, filler dilution, and welding technique, so the figures below serve as a reference point.
| Property | Value |
| Tensile Strength | 190 MPa (27.5 ksi) typical; commonly 145–225 MPa (21–33 ksi) depending on procedure and dilution |
| Yield Strength | 90 MPa (13 ksi) typical; broad reference range 69–190 MPa (10–27.5 ksi) |
| Elongation | 5–6% on a 2 in / 50 mm gauge length; reference range 5–12% |
| Hardness | About 50 HB (Brinell) typical |
Weld metal properties depend on the base alloy, welding procedure, joint design, and testing conditions used for a specific application. Treat the figures above as indicative only, and do not rely on unverified values as guaranteed product properties.
ER4047 TIG Rod vs. ER4043 TIG Rod
ER4047 and ER4043 both belong to the aluminium-silicon filler family, yet they suit different jobs on the shop floor. ER4047 carries roughly 12% silicon against ER4043’s 5%, which gives it a lower melting range and noticeably better fluidity in the weld pool. That extra flow helps on joints prone to hot cracking or on castings with uneven section thickness. ER4043, by contrast, sees wider use for general welding of compatible aluminium alloys, where moderate strength and standard bead control are enough. Neither filler metal suits every aluminium grade on its own. Match the choice to the base material, design requirements, and manufacturer guidance before welding.
ER4047 TIG Rod Applications
Workshops reach for the ER4047 TIG Rod whenever a joint calls for extra fluidity or a lower melting range than standard aluminium fillers allow. Typical applications include:
- TIG welding of compatible cast aluminium-silicon alloys
- Repair welding on castings with thin or uneven sections
- Joints where reduced hot cracking tendency is a priority
- Selected brazing related or joining tasks, where supported by applicable product guidance
- General aluminium fabrication work involving compatible base alloys
Manufacturing Process of ER4047 TIG Rod
- Raw aluminium and silicon alloying to reach the target composition
- Melting and casting into rod or wire feedstock
- Hot or cold working to draw the material to size
- Straightening and precision cutting to standard rod lengths
- Surface cleaning and inspection before packaging
Reference: Confirm the exact in-house manufacturing steps with the COREWELD production team before publishing this as a company-specific process claim.
Key Benefits of COREWELD 4047 Aluminium Filler Metal
- High silicon content near 12% improves weld pool fluidity, helping the filler flow smoothly into tight or uneven joints.
- A lower melting range than ER4043 reduces heat input requirements on suitable base alloys.
- Good fluidity supports cleaner bead profiles on compatible aluminium-silicon castings.
- The composition can help limit hot cracking tendency on applications where this risk is documented for the base alloy.
- Technical datasheet support from COREWELD gives fabricators a documented reference for classification and composition before use.
Why Choose COREWELD 4047 TIG Rod?
COREWELD 4047 gives buyers a documented ER4047 aluminum filler rod backed by its AWS ER4047 classification and published technical specifications. Before selecting it for a project, review the available diameters, packaging options, and technical support that COREWELD confirms for each order. The team can discuss alloy compatibility and joint requirements so the filler matches the base metal and service conditions. Buyers should check product data sheet for specific technical specifications before making a purchase. This maintains the selection of filler metal on tested data.
ER4047 TIG Rod Supply and Technical Support
COREWELD supplies the ER4047 TIG Rod with technical support to help fabricators match the filler metal to their welding requirements. We confirm the available diameters, lengths and packaging for rods upon inquiry and also provide guidance on bulk order requirements. If you request product information, please provide the base alloy, welding process and dimensions required so that the technical team can recommend the most suitable size and pack format. This keeps the response specific to your application. Reach out to COREWELD to discuss your ER4047 welding wire requirements.
Frequently Asked Questions About ER4047 TIG Rod
What is ER4047 TIG rod used for?
It welds compatible aluminium-silicon alloys and castings using the TIG (GTAW) process, particularly on joints needing high fluidity, a lower melting range, and reduced hot cracking tendency on suitable base metals.
What is the silicon content of ER4047 filler metal?
ER4047 contains approximately 12% silicon under AWS A5.10, among the highest silicon levels in the 4xxx filler series, giving it strong fluidity and a comparatively low melting range.
What is the difference between ER4047 and ER4043 TIG rods?
ER4047 carries roughly 12% silicon against ER4043’s near 5%, giving ER4047 better fluidity and a lower melting range, while ER4043 remains common for general-purpose welding of compatible aluminium alloys.
Which aluminium alloys are compatible with ER4047 filler metal?
Compatibility depends on the base alloy, joint design, and service conditions. Consult the COREWELD 4047 datasheet and your welding engineer to confirm suitable base alloys before selecting this filler metal.
What sizes are available for COREWELD 4047 TIG rods?
Upon request COREWELD will confirm available diameters, lengths and packaging formats. Please send your required dimensions and welding process to technical team so that they can size as per order.
What is the difference between ER4047 TIG rod and ER4047 welding wire?
Both share the same ER4047 classification and composition. The difference is form: TIG rod comes in straight-cut lengths for manual feeding, while er4047 welding wire is typically spooled for automated feeding.
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