Titanium Grade 2H-ANN (Annealed)
Heat-treated state · default condition
UNS R50425 · AISI/SAE 4941 · ASTM B265 Grade 2H, B348 Grade 2H
Default stocked condition for Grade 2H sheet/plate/bar/tube; best combination of formability and the guaranteed 400 MPa minimum UTS.
Values for the ANN condition
Other Grade 2H tempers and conditions
Grade 2H is listed in 4 conditions; see the grade overview at Grade 2H.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Forged and annealed | For flanges, valve bodies and rings supplied as forgings to ASTM B381 F-2H with the 400 MPa minimum UTS. | 345 | 455 | 22 | 160 HB | 3.1 % IACS |
ANNDefaultThis page Annealed | Default stocked condition for Grade 2H sheet/plate/bar/tube; best combination of formability and the guaranteed 400 MPa minimum UTS. | 350 | 460 | 25 | 160 HB | — |
Hot rolled | Pick for thick plate and large hot-finished bar where a separate anneal is not applied; slightly higher strength, marginally lower ductility than mill annealed. | 385 | 490 | 22 | 175 HB | 3.1 % IACS |
Cold worked and stress relieved | Choose for cold drawn bar, wire or tubing needing higher strength and better straightness/surface than annealed, with reduced ductility. | 470 | 560 | 15 | 205 HB | — |
What is Grade 2H-ANN?
Grade 2H-ANN is Grade 2H heat treated to ANN — default stocked condition for Grade 2H sheet/plate/bar/tube; best combination of formability and the guaranteed 400 MPa minimum UTS. Grade 2H-ANN has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 79% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi). Grade 2H-ANN has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,665°C (3,029 °F).
Advantages
- Easy to machine — 40/100, better than 93% of titanium grades
- Forms and bends easily — 78/100, better than 87% of titanium grades
- Ductile — tolerates forming and impact — 25%, better than 82% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 350 MPa (50.8 ksi), worse than 79% of titanium grades
Grade 2H-ANN properties
Typical room-temperature values for Grade 2H-ANN; 14 are specific to this condition. Other listed values are Grade 2H reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Grade 2H-ANN has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,665°C (3,029 °F).
Mechanical16
Grade 2H-ANN has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 79% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Grade 2H-ANN is rated for continuous service to 300°C (572 °F). It conducts heat at 16.4 W/m·K (9.48 BTU/hr·ft·°F), better than 71% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade 2H-ANN conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of Grade 2H-ANN takes about 675 MJ of energy and emits 44 kg of CO₂ — less than 55% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Grade 2H-ANN's machinability is fair (40/100, better than 93% of titanium grades); weldability excellent (85/100); formability very good (78/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Grade 2H-ANN
Is Grade 2H easy to machine?
Machine at low surface speed (25–50 m/min) with sharp, positive-rake carbide, heavy rigid setup and flood coolant; never dwell, and keep depth of cut constant to avoid work-hardened skins and chip fires.
Can Grade 2H be welded?
Excellent GTAW/plasma/EBW weldability with clean surfaces and full argon shielding of the pool, trailing shield and backside; keep interpass area bright silver — straw/blue/grey tints mean contaminated, embrittled welds.
Can Grade 2H be formed, bent or molded?
Cold forms well but with high springback and a 2t–3t minimum bend radius; warm forming at 200–400 °C reduces springback, and hot sizing must be followed by descaling and pickling.
What surface finishes work on Grade 2H?
Pickle in HNO3/HF to remove alpha case and scale; anodize (AMS 2488) or use colour anodizing for anti-gall/decorative films, and avoid steel contamination during grinding or polishing to prevent rust staining.
Grade 2H 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 |
|---|---|---|
| Nnitrogen max | ≤ 0.03 | 0.02 |
| Ccarbon max | ≤ 0.08 | 0.02 |
| Hhydrogen max | ≤ 0.02 | 0.01 |
| Feiron max | ≤ 0.3 | 0.15 |
| Ooxygen max; mills aim high in range to guarantee the 400 MPa minimum UTS | ≤ 0.25 | 0.16 |
| residual elements (each)other elements, each | ≤ 0.1 | — |
| residual elements (total)other elements, total | ≤ 0.4 | — |
| Tibalance, ~99.2 % nominal | balance | — |
Grade 2H-ANN — frequently asked
What is Grade 2H-ANN used for?
Grade 2H-ANN is typically used for aerospace fasteners, marine hardware, structural brackets and medical instrument components. In short: higher-strength Grade 2; guaranteed 58 ksi minimum; weldable CP titanium.
What is the yield strength of Grade 2H-ANN?
Grade 2H-ANN has a typical yield strength of 350 MPa (50.8 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 79% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Grade 2H-ANN easy to machine?
Not especially — machinability is rated fair (40/100, better than 93% of titanium grades). Machine at low surface speed (25–50 m/min) with sharp, positive-rake carbide, heavy rigid setup and flood coolant; never dwell, and keep depth of cut constant to avoid work-hardened skins and chip fires.
Can Grade 2H-ANN be welded?
Yes — weldability is rated excellent (85/100). Excellent GTAW/plasma/EBW weldability with clean surfaces and full argon shielding of the pool, trailing shield and backside; keep interpass area bright silver — straw/blue/grey tints mean contaminated, embrittled welds.
What surface finishes work on Grade 2H-ANN?
Pickle in HNO3/HF to remove alpha case and scale; anodize (AMS 2488) or use colour anodizing for anti-gall/decorative films, and avoid steel contamination during grinding or polishing to prevent rust staining.
Can Grade 2H-ANN be formed, bent or molded?
Cold forms well but with high springback and a 2t–3t minimum bend radius; warm forming at 200–400 °C reduces springback, and hot sizing must be followed by descaling and pickling.
What is the maximum service temperature of Grade 2H-ANN?
Grade 2H-ANN 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 Grade 2H-ANN and Grade 2H CW-SR?
ANN is the default condition — default stocked condition for Grade 2H sheet/plate/bar/tube; best combination of formability and the guaranteed 400 MPa minimum UTS. CW-SR: choose for cold drawn bar, wire or tubing needing higher strength and better straightness/surface than annealed, with reduced ductility. Yield strength is 350 MPa in ANN 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 B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASTM B338 / B862 — Titanium Seamless and Welded Tube and Pipe — ASTM International (2021)
- ASME BPVC Section II Part B — SB-265 Grade 2H allowable stresses — ASME (2023)
- AMS 4941 — Titanium Tubing, Seamless or Welded, Commercially Pure, Annealed — SAE International (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (Titanium) — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (Titanium) — ASM International (2005)
- Commercially Pure Titanium Grade 2/2H mill product data — TIMET / Baoti (2022)
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.