Titanium Ti Grade 34 CW-SR
Supply condition
UNS R53445 · ASTM Grade 34
CW-SR = cold worked + stress relieved bar/tube
Choose when higher yield strength and straightness are needed in fasteners, shafts and instrument tubing.
Values for the CW-SR condition
Other Ti Grade 34 tempers and conditions
Ti Grade 34 is listed in 5 conditions; see the grade overview at Ti Grade 34.
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 |
CW-SRThis page 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 CW-SR?
Ti Grade 34 CW-SR is Ti Grade 34 supplied in the CW-SR condition — choose when higher yield strength and straightness are needed in fasteners, shafts and instrument tubing. Ti Grade 34 CW-SR has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi). Ti Grade 34 CW-SR 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). Annealed is the default condition FabDigit quotes; CW-SR is available on request or by drawing note.
Advantages
- Easy to machine — 40/100, better than 93% of titanium grades
- Conducts heat well — 18.5 W/m·K (10.7 BTU/hr·ft·°F), better than 92% of titanium grades
Ti Grade 34 CW-SR properties
Typical room-temperature values for Ti Grade 34 CW-SR; 23 are specific to this condition. Other listed values are Ti Grade 34 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti Grade 34 CW-SR 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 CW-SR has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 34 CW-SR is rated for continuous service to 300°C (572 °F). It conducts heat at 18.5 W/m·K (10.7 BTU/hr·ft·°F), better than 92% of titanium grades. Thermal expansion is 9.5 µm/m·K (5.28 µin/in·°F).
Electrical3
Ti Grade 34 CW-SR conducts electricity at 3 % IACS, better than 60% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (95/100), better than 83% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 34 CW-SR 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 CW-SR's machinability is fair (40/100, better than 93% of titanium grades); weldability very good (84/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti Grade 34 CW-SR
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.
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.
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 | — |
Ti Grade 34 CW-SR — frequently asked
What is Ti Grade 34 CW-SR used for?
Ti Grade 34 CW-SR 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 CW-SR?
Ti Grade 34 CW-SR has a typical yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 62% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 34 CW-SR easy to machine?
Not especially — machinability is rated fair (40/100, better than 93% 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 CW-SR be welded?
Yes — weldability is rated very good (84/100). 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 CW-SR?
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 CW-SR 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 CW-SR?
Ti Grade 34 CW-SR 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.