Titanium Ti Grade 36
UNS R58450 · ASTM Grade 36
Ti Grade 36 (UNS R58450) is a beta titanium-niobium alloy supplied as annealed, stress-relieved, cold-worked, cold-drawn wire and forged product.
Reference datasheet — Ti Grade 36 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 36 tempers and conditions
Ti Grade 36 is supplied in 4 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault recrystallization annealed (mill annealed) | Standard stock condition for bar, wire and strip; maximum ductility for cold heading, swaging and deep forming. | 340 | 420 | 25 | 78 HRB | — |
As-forged / hot worked | Hot-worked forgings and billet before final anneal; used for near-net medical and chemical-plant components. | 350 | 430 | 22 | 143 HB | 2.9 % IACS |
Stress relieved | Pick when dimensional stability after cold forming or machining matters but full softening is not wanted. | 400 | 470 | 20 | 157 HB | 2.9 % IACS |
Cold worked | Use where higher strength and spring-back are needed in bar or strip while retaining useful ductility. | 560 | 620 | 12 | 16 HRC | 2.8 % IACS |
Supply forms, finishes and certifications
Ways Ti Grade 36 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CD-WIRE | CD Wire | Supply form |
What is Ti Grade 36?
Ti Grade 36 (UNS R58450) is a beta titanium-niobium alloy supplied as annealed, stress-relieved, cold-worked, cold-drawn wire and forged product. Engineers choose it for its exceptional corrosion resistance in strongly reducing acid environments and for MRI compatibility, combined with a formability rating of 92 that supports deep drawing, swaging and heavy wire drawing. Typical annealed properties are 340 MPa yield, 420 MPa tensile, 25 % elongation and 78 HRB, with service to 300 °C. Strength is modest and machinability is poor (rating 25); where higher strength matters more than ductility, an alpha-beta grade is the nearer choice. Ti Grade 36 has a density of 5.7 g/cm³ (0.206 lb/in³), heavier than 100% of titanium grades. It melts at 1,720°C (3,128 °F). Ti Grade 36 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 81% of titanium grades. Elongation at break is 25% and the elastic modulus is 62 GPa (8.99 Msi).
What is Ti Grade 36 used for?
- MRI-compatible medical device components
- cold-drawn wire for medical assemblies
- chemical process equipment for strong acids
- acid-service piping and vessel internals
- deep-drawn corrosion-resistant housings
- cold-headed fasteners and swaged fittings
- forged components for aggressive chemical service
Advantages
- Forms and bends easily — 92/100, better than 99% of titanium grades
- Ductile — tolerates forming and impact — 25%, better than 82% of titanium grades
Limitations
- Low stiffness — 62 GPa (8.99 Msi), worse than 100% of titanium grades
- Heavy — 5.7 g/cm³ (0.206 lb/in³), worse than 100% of titanium grades
- Low strength — 340 MPa (49.3 ksi), worse than 81% of titanium grades
Ti Grade 36 properties
Typical room-temperature values for Ti Grade 36-Annealed; bars are the position among titanium grades.
Physical3
Ti Grade 36 has a density of 5.7 g/cm³ (0.206 lb/in³), heavier than 100% of titanium grades. It melts at 1,720°C (3,128 °F).
Mechanical15
Ti Grade 36 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 81% of titanium grades. Elongation at break is 25% and the elastic modulus is 62 GPa (8.99 Msi).
Thermal6
Ti Grade 36 is rated for continuous service to 300°C (572 °F). It conducts heat at 10 W/m·K (5.78 BTU/hr·ft·°F), better than 57% of titanium grades. Thermal expansion is 8 µm/m·K (4.44 µin/in·°F).
Electrical3
Ti Grade 36 conducts electricity at 2.9 % IACS, better than 58% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 36 takes about 720 MJ of energy and emits 46 kg of CO₂ — more than 92% of titanium grades. Typical recycled content is 20%.
Manufacturability8
Ti Grade 36's machinability is poor (25/100, better than 53% of titanium grades); weldability very good (80/100); formability excellent (92/100).
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 36 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti Grade 36
Is Ti Grade 36 easy to machine?
Gummy and low-conductivity: use sharp uncoated carbide, low surface speed (~20–35 m/min), heavy positive rake, high-pressure flood coolant and avoid dwelling to prevent work hardening and smearing.
Can Ti Grade 36 be welded?
Readily GTAW, plasma or EB welded with full argon/vacuum shielding and trailing gas; joints stay ductile, but any air pickup embrittles the weld.
Can Ti Grade 36 be formed, bent or molded?
Outstanding cold formability — deep drawing, swaging, cold heading and >80 % wire drawing are practical; use high spring-back allowance and Ti-safe lubricants, anneal at ~700–800 °C in vacuum between heavy passes.
Ti Grade 36 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 |
|---|---|---|
| Nbbeta stabilizer, defining addition | 42.5 – 47.5 | 45 |
| O | ≤ 0.16 | 0.1 |
| Fe | ≤ 0.1 | 0.03 |
| C | ≤ 0.04 | 0.01 |
| N | ≤ 0.02 | 0.01 |
| Hhigher limit may apply to wire/sheet product forms | ≤ 0 | 0 |
| Other, eachresidual elements | ≤ 0.1 | |
| Other, totalresidual elements | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on Ti Grade 36?
Pickle in HNO3/HF to remove alpha case, then polish or electropolish; anodizes to bright interference colors and accepts passivation per ASTM F86 for implants.
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 36 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R58450
- ASTM
- Grade 36
How much does Ti Grade 36 cost?
Ti Grade 36 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 36 — frequently asked
What is Ti Grade 36 used for?
Ti Grade 36 is typically used for MRI-compatible medical device components, cold-drawn wire for medical assemblies, chemical process equipment for strong acids, acid-service piping and vessel internals, deep-drawn corrosion-resistant housings and cold-headed fasteners and swaged fittings. In short: most formable titanium grade; MRI-compatible beta alloy; extreme acid corrosion resistance.
What is the yield strength of Ti Grade 36?
Ti Grade 36 has a typical yield strength of 340 MPa (49.3 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 81% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Ti Grade 36 easy to machine?
Not especially — machinability is rated poor (25/100, better than 53% of titanium grades). Gummy and low-conductivity: use sharp uncoated carbide, low surface speed (~20–35 m/min), heavy positive rake, high-pressure flood coolant and avoid dwelling to prevent work hardening and smearing.
Can Ti Grade 36 be welded?
Yes — weldability is rated very good (80/100). Readily GTAW, plasma or EB welded with full argon/vacuum shielding and trailing gas; joints stay ductile, but any air pickup embrittles the weld.
What surface finishes work on Ti Grade 36?
Pickle in HNO3/HF to remove alpha case, then polish or electropolish; anodizes to bright interference colors and accepts passivation per ASTM F86 for implants.
Can Ti Grade 36 be formed, bent or molded?
Outstanding cold formability — deep drawing, swaging, cold heading and >80 % wire drawing are practical; use high spring-back allowance and Ti-safe lubricants, anneal at ~700–800 °C in vacuum between heavy passes.
What is the maximum service temperature of Ti Grade 36?
Ti Grade 36 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 36 Annealed and Ti Grade 36-CW?
Annealed is the default condition — standard stock condition for bar, wire and strip; maximum ductility for cold heading, swaging and deep forming. CW: use where higher strength and spring-back are needed in bar or strip while retaining useful ductility. Yield strength is 340 MPa in Annealed versus 560 MPa in CW.
How much does Ti Grade 36 cost?
Ti Grade 36 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 B348 — Titanium and Titanium Alloy Bars and Billets (Grade 36) — ASTM International (2021)
- ASTM B863 — Titanium and Titanium Alloy Wire (Grade 36) — ASTM International (2020)
- ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASTM B265 — Titanium and Titanium Alloy Strip, Sheet and Plate — ASTM International (2020)
- AMS 4982 — Titanium Alloy 45Nb Bar and Wire, Annealed — SAE International (2018)
- ASM Handbook Vol. 2 — Properties of Nonferrous Alloys (Titanium) — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- Ti-45Nb wire and bar technical data — Titanium mill/wire producers (2023)
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.