Titanium Ti Grade 1
UNS R50250 · EN 3.7025 · GB TA1
Ti Grade 1 (UNS R50250, 3.7025, ASTM B265/B348, TA1) is the softest and most ductile commercially pure titanium, with the lowest oxygen and iron content of the CP family.
Reference datasheet — Ti Grade 1 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the Annealed condition
Ti Grade 1 tempers and conditions
Ti Grade 1 is supplied in 7 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Recrystallization annealed | Pick for the most severe deep drawing, spinning or hydroforming where every point of elongation counts. | 190 | 295 | 38 | 110 HB | 3.1 % IACS |
AnnealedDefault mill annealed sheet, plate, bar and tube (ASTM B265/B348/B338 Grade 1) | Default stocked condition: maximum ductility for forming, cladding and corrosion service. | 225 | 310 | 32 | 120 HB | — |
Forged and annealed | Annealed forgings and flanges for corrosion-service valve/pump bodies. | 225 | 310 | 30 | 120 HB | 3.1 % IACS |
Hot rolled | Economical heavy plate and bar where the mill-scale surface and slightly higher strength are acceptable. | 250 | 340 | 27 | 128 HB | 3.1 % IACS |
Stress relieved | Use to remove forming/welding residual stress and improve dimensional stability while keeping most cold-work strength. | 320 | 400 | 20 | 150 HB | 3.1 % IACS |
Cold drawn | Choose for straight, close-tolerance small-diameter bar/wire with moderately raised strength. | 340 | 420 | 18 | 160 HB | 3 % IACS |
Cold rolled | Thin strip, foil and spring-like parts where cold-work strength and flatness matter more than ductility. | 400 | 480 | 10 | 180 HB | 3 % IACS |
Supply forms, finishes and certifications
Ways Ti Grade 1 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
ERTi-1 | Welding filler wire, as-welded deposit | Certification |
What is Ti Grade 1?
Ti Grade 1 (UNS R50250, 3.7025, ASTM B265/B348, TA1) is the softest and most ductile commercially pure titanium, with the lowest oxygen and iron content of the CP family. Typical annealed properties are 225 MPa yield, 310 MPa tensile, 32% elongation and 120 HB (70 HRB), with a formability score of 88, so it is chosen for deep-drawn sheet, tube, cladding and corrosion-service fabrications. Strength is the lowest of the CP grades and service is capped near 300 °C; machinability is moderate at 42 but the soft matrix smears and galls. Grade 2 is the usual step up when more strength is needed. Ti Grade 1 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). Ti Grade 1 has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 95% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi).
What is Ti Grade 1 used for?
- chemical process equipment
- deep-drawn sheet parts
- medical implants (low-load)
- desalination components
- architectural cladding
Advantages
- Ductile — tolerates forming and impact — 32%, better than 98% of titanium grades
- Easy to machine — 42/100, better than 98% of titanium grades
- Forms and bends easily — 88/100, better than 94% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 225 MPa (32.6 ksi), worse than 95% of titanium grades
Ti Grade 1 properties
Typical room-temperature values for Ti Grade 1-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 1 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
Ti Grade 1 has a yield strength of 225 MPa (32.6 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 95% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Ti Grade 1 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
Ti Grade 1 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 Ti Grade 1 takes about 650 MJ of energy and emits 38 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 30%.
Manufacturability8
Ti Grade 1's machinability is fair (42/100, better than 98% of titanium grades); weldability excellent (88/100); formability excellent (88/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. Ti Grade 1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 1
Is Ti Grade 1 easy to machine?
Slow speeds, heavy positive-rake sharp tools, high-pressure flood coolant and rigid setups; the soft low-oxygen matrix smears and work-hardens, so avoid dwelling and never let chips ignite in dry cuts.
Can Ti Grade 1 be welded?
Excellent by GTAW/GMAW/PAW/EB/resistance with ERTi-1 filler, but requires clean surfaces plus trailing-shield or chamber argon protection below ~430 °C to prevent oxygen/nitrogen pickup and weld embrittlement.
Can Ti Grade 1 be formed, bent or molded?
The best-forming titanium grade: cold deep drawing, spinning, roll forming and explosive/roll cladding are all practical, allow generous springback and use 1.5–2 t bend radii or warm forming at 200–300 °C for tight bends.
Ti Grade 1 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 |
|---|---|---|
| N | ≤ 0.03 | 0.01 |
| C | ≤ 0.08 | 0.02 |
| H | ≤ 0.02 | 0.01 |
| Fe | ≤ 0.2 | 0.08 |
| Omax; controls strength | ≤ 0.18 | 0.1 |
| Others (each)residual, each | ≤ 0.1 | |
| Others (total)residual, total | ≤ 0.4 | |
| Tibalance, ≈99.5 % | balance |
What surface finishes work on Ti Grade 1?
Pickle in HNO3/HF to remove alpha case and scale, then bead blast, polish, or anodize (colour interference or AMS 2488 hard anodize) to fight the alloy's natural galling tendency; paint adheres well after abrasion or anodizing.
Surface treatments FabDigit runs on titanium parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Titanium Ti Grade 1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R50250
- EN / DIN / Werkstoff-Nr.
- 3.7025
- GB (China)
- TA1
How much does Ti Grade 1 cost?
Ti Grade 1 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Ti Grade 1 — frequently asked
What is Ti Grade 1 used for?
Ti Grade 1 is typically used for chemical process equipment, deep-drawn sheet parts, medical implants (low-load), desalination components and architectural cladding. In short: most formable CP titanium; lowest-strength CP grade; best deep-drawing titanium sheet.
What is the yield strength of Ti Grade 1?
Ti Grade 1 has a typical yield strength of 225 MPa (32.6 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 95% of titanium grades. Strength varies by condition: see the 7 listed tempers.
Is Ti Grade 1 easy to machine?
Not especially — machinability is rated fair (42/100, better than 98% of titanium grades). Slow speeds, heavy positive-rake sharp tools, high-pressure flood coolant and rigid setups; the soft low-oxygen matrix smears and work-hardens, so avoid dwelling and never let chips ignite in dry cuts.
Can Ti Grade 1 be welded?
Yes — weldability is rated excellent (88/100). Excellent by GTAW/GMAW/PAW/EB/resistance with ERTi-1 filler, but requires clean surfaces plus trailing-shield or chamber argon protection below ~430 °C to prevent oxygen/nitrogen pickup and weld embrittlement.
What surface finishes work on Ti Grade 1?
Pickle in HNO3/HF to remove alpha case and scale, then bead blast, polish, or anodize (colour interference or AMS 2488 hard anodize) to fight the alloy's natural galling tendency; paint adheres well after abrasion or anodizing.
Can Ti Grade 1 be formed, bent or molded?
The best-forming titanium grade: cold deep drawing, spinning, roll forming and explosive/roll cladding are all practical, allow generous springback and use 1.5–2 t bend radii or warm forming at 200–300 °C for tight bends.
What is the maximum service temperature of Ti Grade 1?
Ti Grade 1 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 1 Annealed and Ti Grade 1-CR?
Annealed is the default condition — default stocked condition: maximum ductility for forming, cladding and corrosion service. CR: thin strip, foil and spring-like parts where cold-work strength and flatness matter more than ductility. Yield strength is 225 MPa in Annealed versus 400 MPa in CR.
How much does Ti Grade 1 cost?
Ti Grade 1 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
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 / B381 — Ti tube and forgings — ASTM International (2019)
- GB/T 3621 / GB/T 2965 — (TA1) — SAC (2022)
- ASM Handbook Vol.2 — Properties of Nonferrous Alloys (Titanium) — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- Commercially Pure Titanium Grade 1 technical data — titanium mill datasheets (TIMET/ATI-class) (2022)
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.