Titanium Ti Grade 29
UNS R56407, R56404 · ASTM B348 Grade 29
Ti Grade 29 (UNS R56407/R56404, ASTM B265 and B348) is Ti-6Al-4V ELI with a ruthenium addition, combining ELI-level toughness with improved corrosion resistance for oil and gas and marine service.
Reference datasheet — Ti Grade 29 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 Annealed condition
Ti Grade 29 tempers and conditions
Ti Grade 29 is supplied in 4 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault mill/α-β annealed (704–790 °C, air cool) | Standard stocked condition for bar, plate, tube and forgings; best balance of strength, ductility and NACE MR0175/ISO 15156 compliance. | 830 | 900 | 15 | 33 HRC | — |
Transformed Beta | Solution-treated above the beta transus and cooled to give a lamellar/Widmanstätten transformed-beta microstructure — higher fracture toughness, creep and crack-growth resistance at the cost of ductility and smooth-bar fatigue, favoured for thick subsea forgings in Grade 29. | 830 | 910 | 11 | 34 HRC | 1 % IACS |
Stress relieved | Applied to welded assemblies, cold-drawn tube and machined parts to remove residual stress without changing microstructure appreciably. | 845 | 910 | 14 | 33 HRC | 1 % IACS |
Solution treated and aged | Used where higher strength is needed in sections under ~25 mm; hardness may exceed sour-service (NACE) limits, so verify service requirements. | 930 | 1,000 | 11 | 36 HRC | — |
Supply forms, finishes and certifications
Ways Ti Grade 29 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
BA | Transformed Beta | Surface finish |
What is Ti Grade 29?
Ti Grade 29 (UNS R56407/R56404, ASTM B265 and B348) is Ti-6Al-4V ELI with a ruthenium addition, combining ELI-level toughness with improved corrosion resistance for oil and gas and marine service. Annealed material provides about 830 MPa yield, 900 MPa tensile, 15% elongation and 330 HB (33 HRC) to roughly 315 °C, and it welds well (weldability score 80) as plate, bar, forgings and fasteners. Machinability is poor and cold forming limited; Grade 23 ELI is cheaper where crevice corrosion is not a concern, and Grade 24 is the palladium-modified alternative. Ti Grade 29 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). Ti Grade 29 has a yield strength of 830 MPa (120 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 62% of titanium grades. Elongation at break is 15% and the elastic modulus is 114 GPa (16.5 Msi).
What is Ti Grade 29 used for?
- subsea components
- oil & gas fasteners
- chemical processing parts
Advantages
- Tough — resists crack growth — 85 MPa·√m (77.4 ksi·√in), better than 91% of titanium grades
Limitations
- 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
Ti Grade 29 properties
Typical room-temperature values for Ti Grade 29-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 29 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
Ti Grade 29 has a yield strength of 830 MPa (120 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 62% of titanium grades. Elongation at break is 15% and the elastic modulus is 114 GPa (16.5 Msi).
Thermal6
Ti Grade 29 is rated for continuous service to 315°C (599 °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
Ti Grade 29 conducts electricity at 1 % IACS, worse than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (96/100), better than 92% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 29 takes about 650 MJ of energy and emits 45 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Ti Grade 29's machinability is poor (20/100, worse than 68% of titanium grades); weldability very good (80/100); formability fair (35/100).
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. Ti Grade 29 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 29
Is Ti Grade 29 easy to machine?
Machine like Ti-6Al-4V ELI: rigid setup, sharp uncoated-carbide or PVD tools, low surface speed (25–45 m/min), heavy positive-pressure flood coolant, and never dwell in the cut.
Can Ti Grade 29 be welded?
Excellent GTAW/EBW/laser weldability with matching Gr.29 filler, but weld and heat-affected zone must be fully shielded/trailed with argon below 425 °C to avoid oxygen and hydrogen pickup.
Can Ti Grade 29 be formed, bent or molded?
Cold formability is limited (large bend radii, high springback); hot form or size at 590–760 °C, then stress relieve.
Ti Grade 29 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 |
|---|---|---|
| Al | 5.5 – 6.5 | 6 |
| V | 3.5 – 4.5 | 4 |
| Rucorrosion-enhancing addition | 0.08 – 0.14 | 0.1 |
| Fe | ≤ 0.25 | 0.15 |
| OELI oxygen limit | ≤ 0.13 | 0.11 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| H0.0125 % bar/billet; 0.015 % sheet per product form | ≤ 0.01 | 0.01 |
| Ywhen specified | ≤ 0.01 | |
| Other, eachresiduals; total max 0.4 | ≤ 0.1 | |
| Ti | balance |
What surface finishes work on Ti Grade 29?
Pickle in HNO₃/HF to remove alpha case after hot work; colour anodising or a nitride/DLC coat is used for identification and anti-galling — do not plate with cadmium or expose to hot chlorides during cleaning.
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 Ti Grade 29 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R56407R56404
- ASTM
- B348 Grade 29
- Also called
- Ti-6Al-4V-0.1Ru ELI
How much does Ti Grade 29 cost?
Ti Grade 29 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.
Ti Grade 29 — frequently asked
What is Ti Grade 29 used for?
Ti Grade 29 is typically used for subsea components, oil & gas fasteners and chemical processing parts. In short: best-welding alpha-beta titanium; ruthenium-modified Ti-6Al-4V ELI; subsea corrosion grade.
What is the yield strength of Ti Grade 29?
Ti Grade 29 has a typical yield strength of 830 MPa (120 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 62% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Ti Grade 29 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 68% of titanium grades). Machine like Ti-6Al-4V ELI: rigid setup, sharp uncoated-carbide or PVD tools, low surface speed (25–45 m/min), heavy positive-pressure flood coolant, and never dwell in the cut.
Can Ti Grade 29 be welded?
Yes — weldability is rated very good (80/100). Excellent GTAW/EBW/laser weldability with matching Gr.29 filler, but weld and heat-affected zone must be fully shielded/trailed with argon below 425 °C to avoid oxygen and hydrogen pickup.
What surface finishes work on Ti Grade 29?
Pickle in HNO₃/HF to remove alpha case after hot work; colour anodising or a nitride/DLC coat is used for identification and anti-galling — do not plate with cadmium or expose to hot chlorides during cleaning.
Can Ti Grade 29 be formed, bent or molded?
Cold formability is limited (large bend radii, high springback); hot form or size at 590–760 °C, then stress relieve.
What is the maximum service temperature of Ti Grade 29?
Ti Grade 29 is rated for continuous use to about 315°C (599 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti Grade 29 Annealed and Ti Grade 29-STA?
Annealed is the default condition — standard stocked condition for bar, plate, tube and forgings; best balance of strength, ductility and NACE MR0175/ISO 15156 compliance. STA: used where higher strength is needed in sections under ~25 mm; hardness may exceed sour-service (NACE) limits, so verify service requirements. Yield strength is 830 MPa in Annealed versus 930 MPa in STA.
How much does Ti Grade 29 cost?
Ti Grade 29 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
- ASTM B348 / B348M — Titanium and Titanium Alloy Bars and Billets (Grade 29) — ASTM International (2021)
- ASTM B265 — Titanium and Titanium Alloy Strip, Sheet and Plate (Grade 29) — ASTM International (2020)
- ASTM B861 / B862 — Titanium Alloy Seamless and Welded Pipe — ASTM International (2019)
- ANSI/NACE MR0175 / ISO 15156-3 — Materials for H₂S-containing environments — NACE/ISO (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- Ru-enhanced Ti-6Al-4V (Grade 29) alloy data — TIMET / ATI (2022)
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.