Cryogenic TI · Alpha Titanium
Titanium Grade 6
Titanium Grade 6 is a cryogenic titanium — weldable aerospace titanium. Typical values: 825 MPa yield, 4.46 g/cm³, rated to 350 °C. Available for CNC machining, Sheet metal at FabDigit.
Properties
Typical room-temperature values in the O (annealed) condition. Metric first, imperial in gray. The bars show where Grade 6 sits against the other 14 titanium grades in the catalog.
Datasheet
| Yield strength | 825 MPa120 ksi |
|---|---|
| Tensile strength | 900 MPa131 ksi |
| Hardness | 34 HRC≈ 319 HB |
| Density | 4.46 g/cm³0.161 lb/in³ |
| Specific strength (yield ÷ density) | 185 |
| Min service temp | -250 °C-418 °F |
| Max service temp | 350 °C662 °F |
| Electrical conductivity | 1 % IACS0.6 MS/m |
| Machinability | Fair40 / 100 |
| Weldability | Good60 / 100 |
| Formability | Fair40 / 100 |
| ISO 513 machining group | S |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other titanium grades
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. Grade 6 is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to Grade 6. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Fair40 / 100 |
|---|---|
| ISO material group | S.3 |
| Cutting speed (rough / finish) | 60 / 75 m/min |
| Minimum wall | 1 mm |
| Minimum internal radius | 1.5 mm |
| Drill depth limit | 4× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Fair40 / 100 |
|---|---|
| Weldability | Good60 / 100 |
| Bendable | Yes |
Conditions and tempers
How Grade 6 is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
ODefault Annealed (O) | Softest — parts you will bend or deep-form; not for carrying load | — | — | — | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on Grade 6, ranked by how often they make sense for this grade.
Heat treatment
| Solution Treat + Age (Ti) | Ti-6Al-4V to peak strength |
|---|---|
| Full Anneal | Restore ductility; relieve residual stress; coarsen grain |
| Stress Relief | Reduce residual stress without changing structure |
| Hot Isostatic Press (HIP) | Eliminate porosity in cast / 3DP parts |
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| Passivate (Citric) | Passivation |
| Shot Peen | Blast |
| Electropolish | Polish |
| Glass Bead Blast | Blast |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for Grade 6
Coatings and treatments compatible with titanium on the processes Grade 6 runs on. Pick them in the quote configurator or call them out on the drawing.
Passivation
- Electropolishing
Conversion Coating
- Anodizing Type II
PVD Coating
- AlCrN
- AlTiN
- CrN
- DLC
- MoS2
- TiAlN
- TiB2
- TiCN
- TiN
- WC/C
- ZrN
Organic Coating
- Cerakote
CVD Coating
- CVD Al2O3
- CVD TiCN
- CVD TiN
- Multilayer CVD
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Steel Stamping
- Vibro Engraving / Scribing
Thermal Spray
- HVOF Coating
- Plasma Spray
Equivalent designations
Standards and trade names that resolve to Titanium Grade 6 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R54520
- Other
- Ti-5Al-2.5Sn
Stock forms
Raw-material forms FabDigit sources Grade 6 in.
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.