Titanium Ti Grade 38
UNS R54250 · ASTM Grade 38 · also TIMETAL 62S
Ti Grade 38 (UNS R54250, TIMETAL 62S) is a lower-oxygen, more ductile version of Grade 35 developed for cold-formed aerospace sheet parts that need superior bendability.
Reference datasheet — Ti Grade 38 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 38 tempers and conditions
Ti Grade 38 is supplied in 5 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Rolled + Annealed | Use for plate above ~6 mm and for machined structural blanks where toughness matters more than gauge control. | 790 | 880 | 16 | 29 HRC | 1 % IACS |
AnnealedDefault mill annealed sheet, plate and bar | Default stocked condition: best balance of strength, ductility and cold formability for sheet parts. | 810 | 900 | 15 | 30 HRC | — |
Cold Rolled + Annealed | Pick for thin, flat, cold-formable sheet (deep-draw/brake-form at room temperature) with tight thickness tolerance. | 850 | 930 | 14 | 31 HRC | 1 % IACS |
Cold worked | Strain-hardened strip, wire or fastener stock where strength is wanted straight from the mill without heat treatment. | 970 | 1,050 | 7 | 34 HRC | 1 % IACS |
Solution treated and aged | Choose when peak strength is needed in section thicknesses that can be through-hardened; ductility and formability drop sharply. | 1,010 | 1,100 | 10 | 36 HRC | — |
Supply forms, finishes and certifications
Ways Ti Grade 38 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
Armor | Armor plate | Certification |
What is Ti Grade 38?
Ti Grade 38 (UNS R54250, TIMETAL 62S) is a lower-oxygen, more ductile version of Grade 35 developed for cold-formed aerospace sheet parts that need superior bendability. It is stocked as annealed, cold-rolled annealed, hot-rolled annealed, solution-treated-and-aged, cold-worked and armor product. Typical values are 810 MPa yield, 900 MPa tensile, 15 % elongation, 290 HB / 30 HRC and service to 400 °C. Machinability is low (rating 24) and formability (55) sits well below CP grades, so severe shapes need hot forming; CP Grade 2 is the alternative where strength is not required. Ti Grade 38 has a density of 4.48 g/cm³ (0.162 lb/in³), lighter than 71% of titanium grades. It melts at 1,620°C (2,948 °F). Ti Grade 38 has a yield strength of 810 MPa (117 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 59% of titanium grades. Elongation at break is 15% and the elastic modulus is 105 GPa (15.2 Msi).
What is Ti Grade 38 used for?
- Aerospace sheet-metal parts
- Cold-formed brackets and clips
- Armor plate and vehicle protection panels
- Airframe stiffeners and channels
- Welded sheet assemblies for structural use
- Formed engine-bay shields
Advantages
- High service temperature — 400°C (752 °F), better than 78% of titanium grades
Limitations
- Low electrical conductivity — 1 % IACS, worse than 89% of titanium grades
Ti Grade 38 properties
Typical room-temperature values for Ti Grade 38-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 38 has a density of 4.48 g/cm³ (0.162 lb/in³), lighter than 71% of titanium grades. It melts at 1,620°C (2,948 °F).
Mechanical16
Ti Grade 38 has a yield strength of 810 MPa (117 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 59% of titanium grades. Elongation at break is 15% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
Ti Grade 38 is rated for continuous service to 400°C (752 °F). It conducts heat at 7 W/m·K (4.04 BTU/hr·ft·°F), worse than 76% of titanium grades. Thermal expansion is 9 µm/m·K (5 µin/in·°F).
Electrical3
Ti Grade 38 conducts electricity at 1 % IACS, worse than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), worse than 93% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 38 takes about 620 MJ of energy and emits 40 kg of CO₂ — less than 97% of titanium grades. Typical recycled content is 35%.
Manufacturability8
Ti Grade 38's machinability is poor (24/100, worse than 51% of titanium grades); weldability very good (70/100); formability good (55/100).
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 38 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 38
Is Ti Grade 38 easy to machine?
Machine like Ti-6Al-4V: rigid setup, sharp uncoated-carbide or AlTiN tools, low surface speed (25–45 m/min), heavy feed and flood coolant to avoid work hardening and chip fires.
Can Ti Grade 38 be welded?
Readily GTAW/plasma/EB/laser welded with full argon shielding and trailing/back purge; clean joints, keep hydrogen and oxygen pickup low, stress relieve 540–650 °C after welding.
Can Ti Grade 38 be formed, bent or molded?
Its main selling point — cold brake-forming and roll-forming at room temperature to bend radii near 2–3 t in annealed sheet; hot form 700–800 °C for severe shapes, allow ~15–20 % springback compensation.
Ti Grade 38 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 |
|---|---|---|
| Al | 3.5 – 4.5 | 4 |
| V | 2 – 3 | 2.5 |
| Febeta stabiliser replacing part of the V | 1.2 – 1.8 | 1.5 |
| Ointerstitial strengthener; lower O improves cold bendability | ≤ 0.25 | 0.2 |
| C | ≤ 0.08 | |
| N | ≤ 0.03 | |
| H0.0125 % max for some plate specs | ≤ 0.02 | |
| Y | ≤ 0.01 | |
| Other, each | ≤ 0.1 | |
| Other, total | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on Ti Grade 38?
Pickle in HNO₃/HF to remove alpha case after hot work; Type II colour anodise (AMS 2488) or anodise/lubricate for anti-galling; plating is rarely used and requires activation to avoid hydrogen embrittlement.
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 38 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R54250
- ASTM
- Grade 38
- Trade names
- TIMETAL 62S
How much does Ti Grade 38 cost?
Ti Grade 38 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 38 — frequently asked
What is Ti Grade 38 used for?
Ti Grade 38 is typically used for aerospace sheet-metal parts, cold-formed brackets and clips, armor plate and vehicle protection panels, airframe stiffeners and channels, welded sheet assemblies for structural use and formed engine-bay shields. In short: cold-formable high-strength titanium; armor-capable sheet grade; more ductile than Grade 35.
What is the yield strength of Ti Grade 38?
Ti Grade 38 has a typical yield strength of 810 MPa (117 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 59% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 38 easy to machine?
Not especially — machinability is rated poor (24/100, worse than 51% of titanium grades). Machine like Ti-6Al-4V: rigid setup, sharp uncoated-carbide or AlTiN tools, low surface speed (25–45 m/min), heavy feed and flood coolant to avoid work hardening and chip fires.
Can Ti Grade 38 be welded?
Yes — weldability is rated very good (70/100). Readily GTAW/plasma/EB/laser welded with full argon shielding and trailing/back purge; clean joints, keep hydrogen and oxygen pickup low, stress relieve 540–650 °C after welding.
What surface finishes work on Ti Grade 38?
Pickle in HNO₃/HF to remove alpha case after hot work; Type II colour anodise (AMS 2488) or anodise/lubricate for anti-galling; plating is rarely used and requires activation to avoid hydrogen embrittlement.
Can Ti Grade 38 be formed, bent or molded?
Its main selling point — cold brake-forming and roll-forming at room temperature to bend radii near 2–3 t in annealed sheet; hot form 700–800 °C for severe shapes, allow ~15–20 % springback compensation.
What is the maximum service temperature of Ti Grade 38?
Ti Grade 38 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti Grade 38 Annealed and Ti Grade 38-STA?
Annealed is the default condition — default stocked condition: best balance of strength, ductility and cold formability for sheet parts. STA: choose when peak strength is needed in section thicknesses that can be through-hardened; ductility and formability drop sharply. Yield strength is 810 MPa in Annealed versus 1,010 MPa in STA.
How much does Ti Grade 38 cost?
Ti Grade 38 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 (Grade 38) — ASTM International (2020)
- ASTM B348 — Titanium and Titanium Alloy Bars and Billets — ASTM International (2021)
- ATI 425 Alloy (Ti-4Al-2.5V-1.5Fe) technical data sheet — ATI Specialty Materials (2016)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (titanium) — ASM International (2005)
- MIL-DTL-46077 — Armor Plate, Titanium Alloy, Wrought — US DoD (2011)
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.