Titanium ERTi-5
GB ERTi5 · ISO 24034 Ti5
ERTi-5 is Ti-6Al-4V alpha-beta alloy filler wire, UNS R56400, used to weld Grade 5 and Grade 23 structural titanium where matching strength is required.
Reference datasheet — ERTi-5 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the AW condition
ERTi-5 tempers and conditions
ERTi-5 is supplied in 3 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Pick for pressure vessels and fatigue-critical weldments where residual stress and as-welded α′ must be tempered. | 880 | 950 | 10 | 33 HRC | — |
AWDefault As-welded deposit | Default condition for a GTAW/GMAW deposit made with ERTi-5 and left in the as-welded state. | 895 | 965 | 8 | 34 HRC | — |
Solution treated and aged | Only for thin, fully machinable aerospace weldments where maximum weld strength is required; sacrifices ductility and toughness. | 1,000 | 1,100 | 6 | 40 HRC | — |
Supply forms, finishes and certifications
Ways ERTi-5 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
WIRE | Filler wire as supplied | Supply form |
What is ERTi-5?
ERTi-5 is Ti-6Al-4V alpha-beta alloy filler wire, UNS R56400, used to weld Grade 5 and Grade 23 structural titanium where matching strength is required. It is supplied as straightened cut lengths or spooled wire and is reported as-welded, stress-relieved and in the STA condition, with typical deposit values of 895 MPa yield, 965 MPa tensile, 8% elongation and 330 HB (34 HRC). Ductility is low compared with CP fillers, service is limited to about 350 °C, and deposits are sensitive to interstitial pickup; where matching strength is not needed, ERTi-2 gives a more forgiving weld. ERTi-5 has a density of 4.43 g/cm³ (0.16 lb/in³), lighter than 89% of titanium grades. It melts at 1,604°C (2,919 °F). ERTi-5 has a yield strength of 895 MPa (130 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 80% of titanium grades. Elongation at break is 8% and the elastic modulus is 113 GPa (16.4 Msi).
What is ERTi-5 used for?
- Aerospace airframe titanium welds
- High-strength structural titanium joints
- Landing gear and engine components
- Medical implant fabrication
Advantages
- High strength — 895 MPa (130 ksi), better than 80% of titanium grades
Limitations
- Limited ductility — 8%, worse than 99% of titanium grades
- Poor heat conductor — 6.7 W/m·K (3.87 BTU/hr·ft·°F), worse than 92% of titanium grades
- Low electrical conductivity — 1 % IACS, worse than 89% of titanium grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 83% of titanium grades
ERTi-5 properties
Typical room-temperature values for ERTi-5-AW; bars are the position among titanium grades.
Physical3
ERTi-5 has a density of 4.43 g/cm³ (0.16 lb/in³), lighter than 89% of titanium grades. It melts at 1,604°C (2,919 °F).
Mechanical16
ERTi-5 has a yield strength of 895 MPa (130 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 80% of titanium grades. Elongation at break is 8% and the elastic modulus is 113 GPa (16.4 Msi).
Thermal6
ERTi-5 is rated for continuous service to 350°C (662 °F). It conducts heat at 6.7 W/m·K (3.87 BTU/hr·ft·°F), worse than 92% of titanium grades. Thermal expansion is 8.7 µm/m·K (4.83 µin/in·°F).
Electrical3
ERTi-5 conducts electricity at 1 % IACS, worse than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), worse than 77% of titanium grades.
Sustainability4
Producing a kilogram of ERTi-5 takes about 650 MJ of energy and emits 40 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 15%.
Manufacturability8
ERTi-5's machinability is poor (20/100, worse than 68% of titanium grades); weldability very good (70/100); formability poor (30/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. ERTi-5 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ERTi-5
Is ERTi-5 easy to machine?
Weld deposits machine like Ti-6Al-4V: low speed, high feed, rigid setup, flood coolant, sharp carbide — burr and work-harden readily and never dry-grind (fire risk).
Can ERTi-5 be welded?
GTAW/GMAW/PAW/EB/laser with high-purity argon or helium, trailing shield and back purge to keep the bead silver; keep interstitials low, clean wire and joint with acetone, and stress relieve 540–650 °C for thick or fatigue-loaded joints.
Can ERTi-5 be formed, bent or molded?
Wire is supplied straightened or spooled; cold bending of the deposit is limited — hot form base metal above 600 °C rather than cold working the weld.
ERTi-5 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Alα stabilizer | 5.5 – 6.75 | 6.1 |
| Vβ stabilizer | 3.5 – 4.5 | 4 |
| Fe | ≤ 0.22 | 0.15 |
| Ocontrolled range per AWS A5.16 | 0.12 – 0.2 | 0.16 |
| C | ≤ 0.05 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| Hhydrogen embrittlement control | ≤ 0.02 | 0.01 |
| Yyttrium limit | ≤ 0.01 | |
| Other, each | ≤ 0.1 | |
| Other, total | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on ERTi-5?
Pickle in HNO₃/HF or bead blast to remove alpha case and heat tint, then anodize (AMS 2488) or leave passive; avoid iron contamination from steel tooling and brushes.
Surface treatments FabDigit runs on titanium parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Titanium ERTi-5 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ISO
- 24034 Ti5
- GB (China)
- ERTi5
- Also called
- Ti-6Al-4V filler
- Similar grades
- R56400
How much does ERTi-5 cost?
ERTi-5 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
ERTi-5 — frequently asked
What is ERTi-5 used for?
ERTi-5 is typically used for aerospace airframe titanium welds, high-strength structural titanium joints, landing gear and engine components and medical implant fabrication. In short: highest-strength titanium filler; matches Grade 5 base metal; aerospace structural welds.
What is the yield strength of ERTi-5?
ERTi-5 has a typical yield strength of 895 MPa (130 ksi) and a tensile strength of 965 MPa (140 ksi) — stronger than 80% of titanium grades. Strength varies by condition: see the 3 listed tempers.
Is ERTi-5 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 68% of titanium grades). Weld deposits machine like Ti-6Al-4V: low speed, high feed, rigid setup, flood coolant, sharp carbide — burr and work-harden readily and never dry-grind (fire risk).
Can ERTi-5 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/PAW/EB/laser with high-purity argon or helium, trailing shield and back purge to keep the bead silver; keep interstitials low, clean wire and joint with acetone, and stress relieve 540–650 °C for thick or fatigue-loaded joints.
What surface finishes work on ERTi-5?
Pickle in HNO₃/HF or bead blast to remove alpha case and heat tint, then anodize (AMS 2488) or leave passive; avoid iron contamination from steel tooling and brushes.
Can ERTi-5 be formed, bent or molded?
Wire is supplied straightened or spooled; cold bending of the deposit is limited — hot form base metal above 600 °C rather than cold working the weld.
What is the maximum service temperature of ERTi-5?
ERTi-5 is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERTi-5-AW and ERTi-5-STA?
AW is the default condition — default condition for a GTAW/GMAW deposit made with ERTi-5 and left in the as-welded state. STA: only for thin, fully machinable aerospace weldments where maximum weld strength is required; sacrifices ductility and toughness. Yield strength is 895 MPa in AW versus 1,000 MPa in STA.
How much does ERTi-5 cost?
ERTi-5 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- AWS A5.16/A5.16M — Specification for Titanium and Titanium-Alloy Welding Electrodes and Rods — AWS (2013)
- ISO 24034 — Welding consumables, solid wires and rods for fusion welding of titanium and titanium alloys — ISO (2020)
- ASTM B348 / ASTM F1472 (Grade 5 Ti-6Al-4V chemistry and properties) — ASTM (2021)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (Ti-6Al-4V) — ASM International (1990)
- Welding Handbook Vol. 4 — Titanium and Titanium Alloys — AWS (2011)
- MMPDS — Ti-6Al-4V design allowables — Battelle/FAA (2023)
- Titanium filler wire ERTi-5 datasheets — Perryman / Sandvik / (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.