ERTi-5 TIG / GTAW filler metal is used as a starting point for titanium welding work where the base metal and service requirements must be confirmed before filler selection. For Weld Support Parts users, the critical step is not just identifying the rod classification. It is verifying that the WPS, base metal grade, and service conditions support the choice before any weld is made.
This matters because titanium filler metal selection is not a guess-and-go task. A rod labeled for one titanium alloy family may not be suitable for another joint design, service environment, or code requirement. If the work is repair, production, or maintenance on a controlled part, treat the filler metal page as a selection aid and not as final approval.
Key Takeaways
- Use the filler metal page as a starting point only.
- Confirm the WPS and code requirements before welding.
- Verify the base metal grade, not just the material family.
- Check service conditions such as temperature exposure, contamination risk, and downstream cleaning needs.
- When a detail is not confirmed, mark it as Unknown (Verify) and stop until it is resolved.
Selection Checks Before You Pull Rod
Start with the job documents. Read the WPS, job traveler, repair instruction, or maintenance note before you touch the filler package. Then compare the filler classification against the base metal designation used on the part.
Check: Identify the actual base metal grade on the part, print, or material cert. For titanium work, “Grade 5” or “6Al-4V” is a common reference point on the source page, but the job record still needs confirmation.
Inspect: Look for mixed-material repairs, prior welds, discoloration, or surface contamination. Titanium is sensitive to contamination and heat-affected condition. If the part shows unknown prior repair history, treat the compatibility as Unknown (Verify).
Verify: Confirm that the process in the WPS is TIG / GTAW and that the filler callout matches the intended joint. If the WPS is missing, outdated, or unreadable, do not substitute from memory.
Compatibility Checks on the Shop Floor
Compatibility is more than classification. The rod must align with the base metal, the process, and the service conditions. The source page identifies ERTi-5 as a titanium alloy TIG rod for Grade 5 / 6Al-4V titanium, but that summary should still be checked against the actual job requirements.
Check: Match the filler designation to the base metal callout in the WPS. If the print says Grade 5, verify whether the weld procedure allows the selected filler. If the print says something else, do not assume ERTi-5 is acceptable.
Inspect: Confirm storage condition and packaging integrity. Keep filler clean and dry, and keep it isolated from carbon steel debris, grinding dust, grease, and fingerprints. If the rod has visible damage or contamination, segregate it.
Verify: Review any post-weld cleaning, purge, shielding, or inspection requirements tied to the job. Titanium weld quality depends heavily on shielding integrity. If gas coverage requirements are not clear, the correct status is Unknown (Verify).
Troubleshooting Common Selection Errors
Many filler metal errors are caught before the arc starts. Use a simple check-inspect-verify routine when the job is uncertain.
Problem: Base metal grade is unclear.
Check the part mark, heat number, traveler, or material cert. Inspect for rework marks or overwritten tags. Verify the exact grade before issuing the rod.
Problem: The WPS is generic or incomplete.
Check whether the procedure names the filler classification and process. Inspect for revision status and approval signatures. Verify with the welding engineer, supervisor, or responsible authority before use.
Problem: The job calls for titanium, but the service condition is not documented.
Check whether the part sees heat, corrosion exposure, or critical service. Inspect the repair history if available. Verify whether the filler choice remains acceptable under the service environment.
Problem: Rod identification is lost after repackaging.
Check the original label before opening. Inspect the remaining rod bundle for legible classification. Verify identity before issue; if not traceable, quarantine it.
Filler Metal Finder Use
The Weld Support Parts filler metal finder can help narrow a selection path, but it does not replace job documentation. Use it to cross-check the filler family and process, then compare that result with the WPS and base material record.
Open the finder here: Weld Support Parts Filler Metal Finder
Use the finder as follows:
- Enter the process: TIG / GTAW.
- Match the classification family: ERTi-5.
- Compare the base metal callout with the job record.
- Confirm any alternate recommendation against the WPS before release.
Filler Metal Page Review
The ERTi-5 filler metal page should be treated as a selection starting point, not as a blanket approval for all titanium welds. Use the listed information to orient the job, then verify the details that matter most: exact base metal grade, procedure compliance, and service condition.
Open the filler metal page here: ERTi-5 TIG / GTAW Filler Metal
Review the page against the job in this order:
- Check the classification and process.
- Compare the base material reference to the part.
- Inspect the WPS for matching filler requirements.
- Verify that any uncertain data remains marked Unknown (Verify) until confirmed.
Safety Notes
Titanium welding requires clean handling and disciplined shielding practices. Do not weld on unverified material, contaminated rod, or an incomplete procedure. Keep surfaces free of oil, moisture, and shop debris. If the filler identity, base metal grade, or gas coverage requirement is unclear, stop and verify before arc initiation.
Also review contamination-related TIG issues when the job is sensitive. The following support articles may help with setup and troubleshooting:
FAQ
Is ERTi-5 automatically correct for every titanium joint?
No. Confirm the WPS, base metal grade, and service conditions first. If those items are not documented, the correct answer is Unknown (Verify).
Can I use the filler metal page instead of the WPS?
No. The page is a selection starting point. The WPS and responsible authority control final use.
What should I do if the base metal grade is not marked?
Stop the job, inspect available records, and verify the material identity before issuing filler metal. Do not assume compatibility from the alloy family alone.
What if the rod label is missing after repackaging?
Quarantine it until the classification can be verified from traceable documentation. If it cannot be verified, do not use it.
Sources Checked
- ERTi-5 TIG / GTAW Filler Metal
- Weld Support Parts Filler Metal Finder
- TIG Tungsten Contamination Troubleshooting
- Square Wave 205 TIG Cup Size Selection Guide
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