Titanium Ti Grade 34
UNS R53445 · ASTM Grade 34
Ti Grade 34 (UNS R53445) is the lower-interstitial, more formable counterpart to Grade 33 within the commercially pure and lean-alloy titanium family.
Reference datasheet — Ti Grade 34 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 34 tempers and conditions
Ti Grade 34 is supplied in 5 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Cold rolled + annealed sheet/strip | Pick for pressed heat-exchanger plates, explosion-clad liners and deep-drawn vessel heads. | 310 | 430 | 31 | 150 HB | 3.1 % IACS |
AnnealedDefault mill annealed sheet, plate, bar and tube | Standard stocked condition for corrosion service: best combination of formability, weldability and ductility. | 330 | 450 | 28 | 160 HB | — |
Hot rolled + mill annealed plate | Heavier plate for clad or solid vessel shells, tubesheets and reactor internals. | 340 | 460 | 25 | 165 HB | 3.1 % IACS |
As-welded deposit | Property basis for welded pipe and fabricated vessels where no post-weld anneal is applied. | 350 | 460 | 16 | 180 HB | 3.1 % IACS |
Cold worked + stress relieved bar/tube | Choose when higher yield strength and straightness are needed in fasteners, shafts and instrument tubing. | 470 | 560 | 18 | 14 HRC | 3 % IACS |
What is Ti Grade 34?
Ti Grade 34 (UNS R53445) is the lower-interstitial, more formable counterpart to Grade 33 within the commercially pure and lean-alloy titanium family. It is chosen where deep forming and enhanced crevice-corrosion resistance are both required, and is stocked as cold-rolled annealed sheet, hot-rolled annealed plate, cold-worked stress-relieved product and as-welded tube. Annealed properties are 330 MPa yield, 450 MPa tensile, 28 % elongation and about 160 HB (82 HRB), with service to 300 °C. Machinability is low (rating 35); Grade 33 is the direct alternative when formability is less critical. Ti Grade 34 has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,650°C (3,002 °F). Ti Grade 34 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 83% of titanium grades. Elongation at break is 28% and the elastic modulus is 105 GPa (15.2 Msi).
What is Ti Grade 34 used for?
- Formed corrosion-resistant components
- Chemical process piping and fittings
- Deep-drawn vessel heads and covers
- Welded tube for brine and seawater service
- Heat-exchanger plates
- Scrubber ducting and liners
Advantages
- Conducts heat well — 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades
- Ductile — tolerates forming and impact — 28%, better than 89% of titanium grades
- Tough — resists crack growth — 80 MPa·√m (72.8 ksi·√in), better than 81% of titanium grades
- Easy to machine — 35/100, better than 78% of titanium grades
- Forms and bends easily — 72/100, better than 78% of titanium grades
Limitations
- Low strength — 330 MPa (47.9 ksi), worse than 83% of titanium grades
Ti Grade 34 properties
Typical room-temperature values for Ti Grade 34-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 34 has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,650°C (3,002 °F).
Mechanical16
Ti Grade 34 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 83% of titanium grades. Elongation at break is 28% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 34 is rated for continuous service to 300°C (572 °F). It conducts heat at 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades. Thermal expansion is 9.5 µm/m·K (5.28 µin/in·°F).
Electrical3
Ti Grade 34 conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (96/100), better than 92% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 34 takes about 680 MJ of energy and emits 42 kg of CO₂ — more than 51% of titanium grades. Typical recycled content is 20%.
Manufacturability7
Ti Grade 34's machinability is fair (35/100, better than 78% of titanium grades); weldability excellent (88/100); formability very good (72/100).
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 34 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 34
Is Ti Grade 34 easy to machine?
Machine like CP Ti: rigid setups, sharp uncoated-carbide or PVD tools, 30–60 m/min, heavy flood coolant and generous feed to avoid work-hardened glazing and fire risk from fine chips.
Can Ti Grade 34 be welded?
Excellent GTAW/GMAW/plasma/EB weldability with matching or Grade 2 Ru-bearing filler; requires full argon/helium shielding of weld, root and cooling metal below 400 °C to prevent embrittlement.
Can Ti Grade 34 be formed, bent or molded?
Low-interstitial chemistry gives good cold bending and deep drawing (typ. 2–3 t bend radius); hot form 600–750 °C, then descale by pickling to remove alpha case.
Ti Grade 34 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 |
|---|---|---|
| Ni | 0.35 – 0.55 | 0.45 |
| Cr | 0.1 – 0.2 | 0.15 |
| Ru | 0.02 – 0.04 | 0.03 |
| Pd | 0.01 – 0.02 | 0.02 |
| Fe | ≤ 0.3 | 0.1 |
| Olower interstitial than Grade 33 | ≤ 0.18 | 0.12 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| Hmax; 0.0125 for bar/billet | ≤ 0.02 | 0.01 |
| Other, eachresidual | ≤ 0.1 | |
| Other, totalresidual | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on Ti Grade 34?
Pickle in HNO3/HF after hot work; anodize (AMS 2488) or thermally oxidize for anti-galling; plating is rarely used and demands special activation, paint requires abrasion or conversion pretreatment.
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 34 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R53445
- ASTM
- Grade 34
How much does Ti Grade 34 cost?
Ti Grade 34 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 34 — frequently asked
What is Ti Grade 34 used for?
Ti Grade 34 is typically used for formed corrosion-resistant components, chemical process piping and fittings, deep-drawn vessel heads and covers, welded tube for brine and seawater service, heat-exchanger plates and scrubber ducting and liners. In short: most formable Ru-bearing grade; low-interstitial Grade 33; deep-draw corrosion titanium.
What is the yield strength of Ti Grade 34?
Ti Grade 34 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 83% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 34 easy to machine?
Not especially — machinability is rated fair (35/100, better than 78% of titanium grades). Machine like CP Ti: rigid setups, sharp uncoated-carbide or PVD tools, 30–60 m/min, heavy flood coolant and generous feed to avoid work-hardened glazing and fire risk from fine chips.
Can Ti Grade 34 be welded?
Yes — weldability is rated excellent (88/100). Excellent GTAW/GMAW/plasma/EB weldability with matching or Grade 2 Ru-bearing filler; requires full argon/helium shielding of weld, root and cooling metal below 400 °C to prevent embrittlement.
What surface finishes work on Ti Grade 34?
Pickle in HNO3/HF after hot work; anodize (AMS 2488) or thermally oxidize for anti-galling; plating is rarely used and demands special activation, paint requires abrasion or conversion pretreatment.
Can Ti Grade 34 be formed, bent or molded?
Low-interstitial chemistry gives good cold bending and deep drawing (typ. 2–3 t bend radius); hot form 600–750 °C, then descale by pickling to remove alpha case.
What is the maximum service temperature of Ti Grade 34?
Ti Grade 34 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti Grade 34 Annealed and Ti Grade 34 CW-SR?
Annealed is the default condition — standard stocked condition for corrosion service: best combination of formability, weldability and ductility. CW-SR: choose when higher yield strength and straightness are needed in fasteners, shafts and instrument tubing. Yield strength is 330 MPa in Annealed versus 470 MPa in CW-SR.
How much does Ti Grade 34 cost?
Ti Grade 34 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 B338 – Seamless and Welded Titanium Tubes for Condensers and Heat Exchangers — ASTM International (2022)
- ASM Handbook Vol.2 – Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Corrosion Resistance of Titanium (Ru/Pd-enhanced alloys) — ASM International / producer corrosion guides (2013)
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.