Titanium Ti Grade 24
UNS R56404, R56405 · ASTM B265 Grade 24
Ti Grade 24 (UNS R56404/R56405, ASTM B265 and B348) is Ti-6Al-4V with a small palladium addition that keeps Grade 5 mechanical properties while improving crevice-corrosion resistance in reducing acids.
Reference datasheet — Ti Grade 24 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 24 tempers and conditions
Ti Grade 24 is supplied in 6 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Recrystallization Annealed | Choose when damage tolerance / fracture toughness matters more than peak strength. | 855 | 925 | 13 | 34 HRC | 1 % IACS |
AnnealedDefault mill annealed (704–790 °C, air cool) | Standard stocked condition for plate, sheet, bar and tube; best balance of strength, ductility and weldability. | 880 | 950 | 14 | 36 HRC | — |
Stress relieved | Applied to formed sheet, machined parts and weldments to remove residual stress without changing strength much. | 890 | 960 | 13 | 36 HRC | 1 % IACS |
925 °C air cool + 705 °C/2 h | Sheet/plate condition giving more uniform microstructure and slightly higher strength than mill anneal. | 895 | 965 | 13 | 36 HRC | 1 % IACS |
Cold Worked & Stress Relieved | Wire and fastener stock supplied cold drawn then stress relieved for higher strength and straightness. | 980 | 1,050 | 10 | 38 HRC | 1 % IACS |
Solution treated and aged | Highest strength condition for bar/forgings up to ~25 mm section; toughness and weldability drop. | 1,035 | 1,105 | 10 | 40 HRC | — |
Supply forms, finishes and certifications
Ways Ti Grade 24 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
AsForged | As-Forged / Hot Worked | Surface finish |
BA | Beta Annealed | Surface finish |
What is Ti Grade 24?
Ti Grade 24 (UNS R56404/R56405, ASTM B265 and B348) is Ti-6Al-4V with a small palladium addition that keeps Grade 5 mechanical properties while improving crevice-corrosion resistance in reducing acids. Annealed product gives about 880 MPa yield, 950 MPa tensile, 14% elongation and 334 HB (36 HRC) with a service ceiling near 400 °C, and it is used as sheet, plate, bar and forgings. Machinability is poor and cold formability limited (bend radii 4–5t or larger); Grade 5 is cheaper where crevice attack is not a risk, and Grade 29 is the option when ELI toughness is also required. Ti Grade 24 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 24 has a yield strength of 880 MPa (128 ksi) and a tensile strength of 950 MPa (138 ksi) — stronger than 78% of titanium grades. Elongation at break is 14% and the elastic modulus is 114 GPa (16.5 Msi).
What is Ti Grade 24 used for?
- chemical processing equipment
- marine hardware
- offshore fasteners
Advantages
- High strength — 880 MPa (128 ksi), better than 78% of titanium grades
- High service temperature — 400°C (752 °F), better than 78% 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 24 properties
Typical room-temperature values for Ti Grade 24-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 24 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 24 has a yield strength of 880 MPa (128 ksi) and a tensile strength of 950 MPa (138 ksi) — stronger than 78% of titanium grades. Elongation at break is 14% and the elastic modulus is 114 GPa (16.5 Msi).
Thermal6
Ti Grade 24 is rated for continuous service to 400°C (752 °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 24 conducts electricity at 1 % IACS, worse than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (93/100), better than 72% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 24 takes about 700 MJ of energy and emits 45 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Ti Grade 24's machinability is poor (20/100, worse than 68% of titanium grades); weldability very good (70/100); formability poor (25/100).
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 24 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 24
Is Ti Grade 24 easy to machine?
Machine like Ti-6Al-4V: rigid setup, low surface speed (25–50 m/min carbide), heavy positive-rake sharp tools, generous high-pressure flood coolant, never dwell in cut.
Can Ti Grade 24 be welded?
GTAW/plasma/EBW with full argon shielding and trailing/back purge; use matching Gr.24 or Gr.5 filler, keep interstitial pickup low, stress relieve 540–650 °C after welding.
Can Ti Grade 24 be formed, bent or molded?
Cold formability is limited (bend radii ≥4–5t); hot form or size at 700–900 °C, then descale and pickle to remove alpha case.
Ti Grade 24 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 – 6.75 | 6.2 |
| V | 3.5 – 4.5 | 4 |
| Pdcorrosion-enhancing addition that defines Grade 24 | 0.04 – 0.08 | 0.05 |
| Fe | ≤ 0.4 | 0.2 |
| Ostandard interstitial level | ≤ 0.2 | 0.16 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.05 | 0.01 |
| H0.0125% max for bar/billet per B348 | ≤ 0.02 | 0.01 |
| Residuals eachtotal residuals 0.40 max | ≤ 0.1 | |
| Ti | balance |
What surface finishes work on Ti Grade 24?
Pickle in HNO₃/HF after hot work; color or hard anodize per AMS 2488, or shot-peen/glass-bead for fatigue-critical parts — avoid iron contamination on the surface.
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 24 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R56404R56405
- ASTM
- B265 Grade 24
- Also called
- Ti-6Al-4V-0.05Pd
How much does Ti Grade 24 cost?
Ti Grade 24 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 24 — frequently asked
What is Ti Grade 24 used for?
Ti Grade 24 is typically used for chemical processing equipment, marine hardware and offshore fasteners. In short: crevice-resistant Ti-6Al-4V; palladium-modified Grade 5; grade 5 strength, better corrosion.
What is the yield strength of Ti Grade 24?
Ti Grade 24 has a typical yield strength of 880 MPa (128 ksi) and a tensile strength of 950 MPa (138 ksi) — stronger than 78% of titanium grades. Strength varies by condition: see the 6 listed tempers.
Is Ti Grade 24 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 68% of titanium grades). Machine like Ti-6Al-4V: rigid setup, low surface speed (25–50 m/min carbide), heavy positive-rake sharp tools, generous high-pressure flood coolant, never dwell in cut.
Can Ti Grade 24 be welded?
Yes — weldability is rated very good (70/100). GTAW/plasma/EBW with full argon shielding and trailing/back purge; use matching Gr.24 or Gr.5 filler, keep interstitial pickup low, stress relieve 540–650 °C after welding.
What surface finishes work on Ti Grade 24?
Pickle in HNO₃/HF after hot work; color or hard anodize per AMS 2488, or shot-peen/glass-bead for fatigue-critical parts — avoid iron contamination on the surface.
Can Ti Grade 24 be formed, bent or molded?
Cold formability is limited (bend radii ≥4–5t); hot form or size at 700–900 °C, then descale and pickle to remove alpha case.
What is the maximum service temperature of Ti Grade 24?
Ti Grade 24 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti Grade 24 Annealed and Ti Grade 24-STA?
Annealed is the default condition — standard stocked condition for plate, sheet, bar and tube; best balance of strength, ductility and weldability. STA: highest strength condition for bar/forgings up to ~25 mm section; toughness and weldability drop. Yield strength is 880 MPa in Annealed versus 1,035 MPa in STA.
How much does Ti Grade 24 cost?
Ti Grade 24 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 B265 — Titanium and Titanium Alloy Strip, Sheet and Plate — ASTM International (2020)
- ASTM B348 — Titanium and Titanium Alloy Bars and Billets — ASTM International (2021)
- ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (Titanium) — ASM International (2005)
- MMPDS-17 Ti-6Al-4V allowables — Battelle/FAA (2022)
- TIMET / ATI Ti-6Al-4V and Pd-modified alloy datasheets — TIMET, ATI (2021)
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.