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Titanium Grade 11 CW-SR

Supply condition

ASTM Grade 11 · UNS R52250

CW-SR = cold worked + stress relieved

Choose when higher strength and straightness are needed and forming is already complete.

High cost $$$$
Request a quote in Grade 11 CW-SRGrade 11 overview

Values for the CW-SR condition

Other Grade 11 tempers and conditions

Grade 11 is listed in 4 conditions; see the grade overview at Grade 11.

Compare all 4 conditionsHide
Condition · open for datasheetBest forYield MPaTensile MPaElong. %HardnessConductivity
AnnealedDefault
mill annealed sheet, plate, bar and tube
Standard stocked condition for all product forms; maximum ductility and corrosion performance.22033030120 HB—
FORGED-ANN
Forged and annealed (flanges, fittings, valve bodies)
Near-net forged corrosion hardware per ASTM B381 F11, annealed after forging.22533528125 HB3.5 % IACS
AW
As-welded deposit
Property set for welded tube (ASTM B338/B337) and autogenous joints; weld slightly stronger, less ductile than base.24034522135 HB3.5 % IACS
CW-SRThis page
Cold worked + stress relieved
Choose when higher strength and straightness are needed and forming is already complete.37045018160 HB3.4 % IACS

What is Grade 11 CW-SR?

Grade 11 CW-SR is Grade 11 supplied in the CW-SR condition — choose when higher strength and straightness are needed and forming is already complete. Grade 11 CW-SR has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 76% of titanium grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi). Grade 11 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 — 55/100, better than 101% of titanium grades
  • High electrical conductivity — 3.4 % IACS, better than 96% of titanium grades
  • Conducts heat well — 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 80% of titanium grades

Limitations

  • Limited service temperature — 250°C (482 °F), worse than 99% of titanium grades
  • Low strength — 370 MPa (53.7 ksi), worse than 76% of titanium grades

Grade 11 CW-SR properties

Typical room-temperature values for Grade 11 CW-SR; 22 are specific to this condition. Other listed values are Grade 11 reference data and may not represent this condition. Bars are the position among titanium grades.

Physical3

Grade 11 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).

Density4.51 g/cm³0.16 lb/in³
Melting Point (Solidus)1,660°C3,020 °F
Liquidus Temperature1,670°C3,038 °F

Mechanical16

Grade 11 CW-SR has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 76% of titanium grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi).

Elastic (Young's) Modulus103 GPa14.9 Msi
Shear Modulus45 GPa6.5 Msi
Bulk Modulus110 GPa16 Msi
Poisson's Ratio0.34
Tensile Strength (Ultimate)450 MPa65.3 ksi
Yield Strength (0.2% offset)370 MPa53.7 ksi
Elongation at Break18%
Reduction in Area40%
Compressive Strength400 MPa58 ksi
Shear Strength300 MPa43.5 ksi
Fatigue Strength (Endurance Limit)250 MPa36.3 ksi
Fracture Toughness (K_IC)70 MPa·√m63.7 ksi·√in
Charpy V-Notch Impact (RT)30 J22.1 ft·lbf
Hardness, Brinell160 HB
Hardness, Rockwell B84 HRB
Hardness, Vickers168 HV

Thermal6

Grade 11 CW-SR is rated for continuous service to 250°C (482 °F). It conducts heat at 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 80% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).

Thermal Conductivity16.5 W/m·K9.5 BTU/hr·ft·°F
Specific Heat Capacity523 J/kg·K0.12 BTU/lb·°F
Thermal Expansion (CTE, 20–100 °C)8.6 µm/m·K4.8 µin/in·°F
Latent Heat of Fusion320 J/g138 BTU/lb
Max Service Temperature (continuous)250°C482 °F
Min Service Temperature-196°C-321 °F

Electrical3

Grade 11 CW-SR conducts electricity at 3.4 % IACS, better than 96% of titanium grades.

Electrical Conductivity3.4 % IACS
Electrical Resistivity5.1×10⁻⁷ Ω·m20.1 µΩ·in
Magnetic Responsenon-magnetic

Chemical & Environmental3

Corrosion resistance is excellent (96/100), better than 92% of titanium grades.

Galvanic Potential (seawater, vs SCE)-0.05 V
Corrosion ResistanceExcellent96/100
Chemical Resistance SummaryOutstanding in seawater, wet chlorine, chlorides, hypochlorite, oxidizing acids; the 0.15 % Pd extends passivity into hot dilute HCl, H2SO4, H3PO4 and hot brine crevices well beyond Gr1/Gr2. Attacked by HF, fluoride-bearing media, anhydrous chlorine/methanol, and concentrated reducing acids at high temperature.

Sustainability4

Producing a kilogram of Grade 11 CW-SR takes about 700 MJ of energy and emits 40 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 20%.

Embodied Energy (primary production)700 MJ/kg300,946 BTU/lb
Embodied Carbon (primary production)40 kg CO₂/kg
Embodied Water500 L/kg59.9 gal/lb
Typical Recycled Content20%

Manufacturability7

Grade 11 CW-SR's machinability is good (55/100, better than 101% of titanium grades); weldability excellent (85/100); formability good (60/100).

MachinabilityGood55/100
Machinability Rating (AISI 1212 = 100 %)48%
WeldabilityExcellent85/100
Formability (cold)Good60/100
Brazeability / SolderabilityFair40/100
PolishabilityVery good70/100
Anodizing Responseexcellent — anodizes readily to stable interference colours; also commonly given thermal/anodic oxide or pickle-passivate finishes

Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.

Working with Grade 11 CW-SR

Is Grade 11 easy to machine?

Machine like CP titanium: sharp, positive-rake carbide, low speed (20–45 m/min), heavy rigid feed, flood coolant; avoid dwelling to prevent work hardening and smearing.

Can Grade 11 be welded?

Excellent GTAW/plasma/EB weldability with matching Gr11 or Gr1 filler, provided full argon shielding of the puddle, trailing shield and back purge to below ~430 °C; no post-weld heat treatment normally required.

Can Grade 11 be formed, bent or molded?

Best cold formability of the CP grades — deep drawing, spinning and tight bend radii (about 2–3 t) are practical; allow for springback and warm form at 150–300 °C for severe shapes.

What surface finishes work on Grade 11?

Pickle in HNO3/HF to remove alpha case and iron pick-up, then passivate or colour-anodize; avoid steel tooling contamination and never use chlorinated or fluoride-bearing cleaners.

Grade 11 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.

ElementSpec limit (wt %)Nominal
Pdpalladium addition that stabilises the passive film0.12 – 0.250.15
Olow-oxygen (Grade 1 base) for maximum ductility≤ 0.180.1
Fe≤ 0.20.08
C≤ 0.080.02
N≤ 0.030.01
H0.0125 % max for bar/billet per ASTM B348≤ 0.020
Residuals, eachtotal residuals 0.4 % max≤ 0.1—
Tibalance—

Grade 11 CW-SR — frequently asked

What is Grade 11 CW-SR used for?

Grade 11 CW-SR is typically used for deep-drawn corrosion-resistant vessels, chemical process piping and anode substrates. In short: most formable CP titanium; palladium crevice resistance; lowest strength CP grade.

What is the yield strength of Grade 11 CW-SR?

Grade 11 CW-SR has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 76% of titanium grades. Strength varies by condition: see the 4 listed tempers.

Is Grade 11 CW-SR easy to machine?

Reasonably — machinability is rated good (55/100, better than 101% of titanium grades). Machine like CP titanium: sharp, positive-rake carbide, low speed (20–45 m/min), heavy rigid feed, flood coolant; avoid dwelling to prevent work hardening and smearing.

Can Grade 11 CW-SR be welded?

Yes — weldability is rated excellent (85/100). Excellent GTAW/plasma/EB weldability with matching Gr11 or Gr1 filler, provided full argon shielding of the puddle, trailing shield and back purge to below ~430 °C; no post-weld heat treatment normally required.

What surface finishes work on Grade 11 CW-SR?

Pickle in HNO3/HF to remove alpha case and iron pick-up, then passivate or colour-anodize; avoid steel tooling contamination and never use chlorinated or fluoride-bearing cleaners.

Can Grade 11 CW-SR be formed, bent or molded?

Best cold formability of the CP grades — deep drawing, spinning and tight bend radii (about 2–3 t) are practical; allow for springback and warm form at 150–300 °C for severe shapes.

What is the maximum service temperature of Grade 11 CW-SR?

Grade 11 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 Grade 11 Annealed and Grade 11 CW-SR?

Annealed is the default condition — standard stocked condition for all product forms; maximum ductility and corrosion performance. CW-SR: choose when higher strength and straightness are needed and forming is already complete. Yield strength is 220 MPa in Annealed versus 370 MPa in CW-SR.

Sources

  1. ASTM B265 — Titanium and Titanium Alloy Strip, Sheet, and Plate — ASTM International (2020)
  2. ASTM B348 — Titanium and Titanium Alloy Bars and Billets — ASTM International (2021)
  3. ASTM B338/B337 — Titanium Tube for Condensers and Heat Exchangers — ASTM International (2019)
  4. ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
  5. ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
  6. Ti-Pd corrosion-resistant grade datasheets (Gr7/Gr11) — titanium mill producers (2023)

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.