Titanium Ti Grade 13 CW-SR
Supply condition
UNS R53413
CW-SR = cold Worked and Stress Relieved
Choose when higher yield strength and springback control are needed in thin sheet, wire or tubing; ductility drops markedly.
Values for the CW-SR condition
Other Ti Grade 13 tempers and conditions
Ti Grade 13 is listed in 4 conditions; see the grade overview at Ti Grade 13.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault mill annealed sheet, plate, bar and tube | Default stocked condition: maximum ductility and toughness for forming, welding and corrosion service. | 210 | 320 | 30 | 120 HB | — |
Hot rolled | Heavy plate, billet and forging stock supplied as hot-worked; similar strength to annealed with coarser surface and mild property scatter. | 220 | 330 | 28 | 125 HB | 3.1 % IACS |
As-welded deposit | Reference condition for welded pipe and fabricated vessels; joint strength matches base metal, ductility slightly lower. | 220 | 330 | 22 | 135 HB | 3 % IACS |
CW-SRThis page Cold Worked and Stress Relieved | Choose when higher yield strength and springback control are needed in thin sheet, wire or tubing; ductility drops markedly. | 400 | 480 | 15 | 10 HRC | 3 % IACS |
What is Ti Grade 13 CW-SR?
Ti Grade 13 CW-SR is Ti Grade 13 supplied in the CW-SR condition — choose when higher yield strength and springback control are needed in thin sheet, wire or tubing; ductility drops markedly. Ti Grade 13 CW-SR has a yield strength of 400 MPa (58 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of titanium grades. Elongation at break is 15% and the elastic modulus is 105 GPa (15.2 Msi). Ti Grade 13 CW-SR has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,660°C (3,020 °F). Annealed is the default condition FabDigit quotes; CW-SR is available on request or by drawing note.
Advantages
- Easy to machine — 45/100, better than 100% of titanium grades
- Conducts heat well — 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades
Limitations
- Limited service temperature — 250°C (482 °F), worse than 99% of titanium grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 83% of titanium grades
Ti Grade 13 CW-SR properties
Typical room-temperature values for Ti Grade 13 CW-SR; 23 are specific to this condition. Other listed values are Ti Grade 13 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti Grade 13 CW-SR has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,660°C (3,020 °F).
Mechanical16
Ti Grade 13 CW-SR has a yield strength of 400 MPa (58 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of titanium grades. Elongation at break is 15% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 13 CW-SR is rated for continuous service to 250°C (482 °F). It conducts heat at 19 W/m·K (11 BTU/hr·ft·°F), better than 93% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Ti Grade 13 CW-SR conducts electricity at 3 % IACS, better than 60% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 13 CW-SR takes about 650 MJ of energy and emits 40 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 25%.
Manufacturability7
Ti Grade 13 CW-SR's machinability is fair (45/100, better than 100% of titanium grades); weldability very good (80/100); 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 13 CW-SR
Is Ti Grade 13 easy to machine?
Machine like CP Ti: rigid setups, sharp uncoated-carbide or coated inserts, low surface speed (~30–50 m/min), heavy positive feed and copious flood coolant to avoid work hardening, galling and chip fires.
Can Ti Grade 13 be welded?
Excellent GTAW/PAW/EBW weldability with matching or CP Ti filler, but requires full inert-gas shielding of the pool, trailing gas and back purge; keep oxygen/nitrogen pickup low and clean surfaces to bright metal.
Can Ti Grade 13 be formed, bent or molded?
Low interstitial content gives good cold formability — bend radii around 2–3 t for annealed sheet; use generous radii, slow strain rates, and warm forming (200–400 °C) for severe draws, allowing for high springback.
What surface finishes work on Ti Grade 13?
Pickle in HNO3/HF after hot work to remove alpha case, then descale, bead-blast or polish; colour anodising and Ti-nitride/oxide treatments help against galling since Ti is prone to seizing on itself.
Ti Grade 13 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 |
|---|---|---|
| Niprimary alloying addition; forms Ti2Ni for improved reducing-acid resistance | 0.4 – 0.6 | 0.5 |
| Rucathodic modifier replacing Pd; check governing revision, some listings give 0.02–0.04 | 0.04 – 0.06 | 0.05 |
| Olow-interstitial limit — source of the high-ductility grade | ≤ 0.1 | 0.07 |
| N | ≤ 0.03 | 0.01 |
| C | ≤ 0.08 | 0.02 |
| H | ≤ 0.02 | 0.01 |
| Fe | ≤ 0.2 | 0.08 |
| Residuals, each0.4 max total | ≤ 0.1 | — |
| Ti | balance | — |
Ti Grade 13 CW-SR — frequently asked
What is Ti Grade 13 CW-SR used for?
Ti Grade 13 CW-SR is typically used for offshore and subsea components, seawater piping and chemical process equipment requiring high toughness. In short: toughest of the Ti-Ni-Ru alloys; low-interstitial, high ductility; better crevice resistance than CP Ti.
What is the yield strength of Ti Grade 13 CW-SR?
Ti Grade 13 CW-SR has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 68% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Ti Grade 13 CW-SR easy to machine?
Reasonably — machinability is rated fair (45/100, better than 100% of titanium grades). Machine like CP Ti: rigid setups, sharp uncoated-carbide or coated inserts, low surface speed (~30–50 m/min), heavy positive feed and copious flood coolant to avoid work hardening, galling and chip fires.
Can Ti Grade 13 CW-SR be welded?
Yes — weldability is rated very good (80/100). Excellent GTAW/PAW/EBW weldability with matching or CP Ti filler, but requires full inert-gas shielding of the pool, trailing gas and back purge; keep oxygen/nitrogen pickup low and clean surfaces to bright metal.
What surface finishes work on Ti Grade 13 CW-SR?
Pickle in HNO3/HF after hot work to remove alpha case, then descale, bead-blast or polish; colour anodising and Ti-nitride/oxide treatments help against galling since Ti is prone to seizing on itself.
Can Ti Grade 13 CW-SR be formed, bent or molded?
Low interstitial content gives good cold formability — bend radii around 2–3 t for annealed sheet; use generous radii, slow strain rates, and warm forming (200–400 °C) for severe draws, allowing for high springback.
What is the maximum service temperature of Ti Grade 13 CW-SR?
Ti Grade 13 CW-SR is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti Grade 13 Annealed and Ti Grade 13 CW-SR?
Annealed is the default condition — default stocked condition: maximum ductility and toughness for forming, welding and corrosion service. CW-SR: choose when higher yield strength and springback control are needed in thin sheet, wire or tubing; ductility drops markedly. Yield strength is 210 MPa in Annealed versus 400 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 / B862 — Titanium Tube and Welded Pipe — ASTM International (2022)
- ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASM Handbook, Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- Corrosion-resistant titanium grades (Ru/Pd-modified) technical bulletin — TIMET / RMI Titanium (2018)
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.