Titanium Ti-6Al-4V ELI (AM, F3001)-SR (Stress relieved)
Heat-treated state · default condition
UNS R56401 · ASTM F3001
Default supplied condition for AM Ti-6Al-4V ELI: removes build residual stress and partially decomposes α′ while keeping high strength.
Values for the SR condition
Other Ti-6Al-4V ELI (AM, F3001) tempers and conditions
Ti-6Al-4V ELI (AM, F3001) is listed in 6 conditions; see the grade overview at Ti-6Al-4V ELI (AM, F3001).
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Beta annealed (~1020 °C) plus hot isostatic pressing | Damage-tolerant condition for fracture-critical airframe/spinal hardware: lamellar α colonies give the highest K_IC and lowest crack-growth rate at reduced strength. | 830 | 900 | 12 | 30 HRC | — |
Hot isostatic pressed | Standard for implants and fatigue-critical aerospace parts: closes gas/lack-of-fusion porosity, maximising ductility and fatigue life. | 870 | 960 | 17 | 31 HRC | — |
Annealed | Choose when ductility and dimensional stability matter more than peak strength; fully decomposes martensite to fine α+β. | 910 | 1,000 | 15 | 32 HRC | — |
SRDefaultThis page Stress relieved | Default supplied condition for AM Ti-6Al-4V ELI: removes build residual stress and partially decomposes α′ while keeping high strength. | 990 | 1,080 | 12 | 35 HRC | — |
Solution treated and aged | Use for thin, strength-driven AM parts where higher yield strength is worth reduced toughness and section-size limits. | 1,050 | 1,150 | 10 | 37 HRC | — |
As built (as printed) | Pick only for non-critical prototypes: highest strength but brittle α′ martensite, high residual stress and low ductility/toughness. | 1,120 | 1,250 | 8 | 38 HRC | — |
What is Ti-6Al-4V ELI (AM, F3001)-SR?
Ti-6Al-4V ELI (AM, F3001)-SR is Ti-6Al-4V ELI (AM, F3001) heat treated to SR — default supplied condition for AM Ti-6Al-4V ELI: removes build residual stress and partially decomposes α′ while keeping high strength. Ti-6Al-4V ELI (AM, F3001)-SR has a yield strength of 990 MPa (144 ksi) and a tensile strength of 1,080 MPa (157 ksi) — stronger than 92% of titanium grades. Elongation at break is 12% and the elastic modulus is 114 GPa (16.5 Msi). Ti-6Al-4V ELI (AM, F3001)-SR has a density of 4.43 g/cm³ (0.16 lb/in³), lighter than 89% of titanium grades. It melts at 1,604°C (2,919 °F).
Advantages
- High strength — 990 MPa (144 ksi), better than 92% of titanium grades
Limitations
- Low fracture toughness — 50 MPa·√m (45.5 ksi·√in), worse than 96% of titanium grades
- Poor heat conductor — 6.7 W/m·K (3.87 BTU/hr·ft·°F), worse than 92% of titanium grades
- Low electrical conductivity — 1 % IACS, worse than 89% of titanium grades
- Limited formability — 20/100, worse than 83% of titanium grades
- Limited ductility — 12%, worse than 78% of titanium grades
Ti-6Al-4V ELI (AM, F3001)-SR properties
Typical room-temperature values for Ti-6Al-4V ELI (AM, F3001)-SR; 11 are specific to this condition. Other listed values are Ti-6Al-4V ELI (AM, F3001) reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti-6Al-4V ELI (AM, F3001)-SR has a density of 4.43 g/cm³ (0.16 lb/in³), lighter than 89% of titanium grades. It melts at 1,604°C (2,919 °F).
Mechanical16
Ti-6Al-4V ELI (AM, F3001)-SR has a yield strength of 990 MPa (144 ksi) and a tensile strength of 1,080 MPa (157 ksi) — stronger than 92% of titanium grades. Elongation at break is 12% and the elastic modulus is 114 GPa (16.5 Msi).
Thermal6
Ti-6Al-4V ELI (AM, F3001)-SR is rated for continuous service to 350°C (662 °F). It conducts heat at 6.7 W/m·K (3.87 BTU/hr·ft·°F), worse than 92% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Ti-6Al-4V ELI (AM, F3001)-SR conducts electricity at 1 % IACS, worse than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of Ti-6Al-4V ELI (AM, F3001)-SR takes about 720 MJ of energy and emits 45 kg of CO₂ — more than 92% of titanium grades. Typical recycled content is 15%.
Manufacturability7
Ti-6Al-4V ELI (AM, F3001)-SR's machinability is poor (20/100, worse than 68% of titanium grades); weldability very good (75/100); formability poor (20/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti-6Al-4V ELI (AM, F3001)-SR
Is Ti-6Al-4V ELI (AM, F3001) easy to machine?
Machine like wrought Ti-6Al-4V: rigid setup, sharp uncoated-carbide or AlTiN tools, 30–60 m/min surface speed, heavy through-tool flood coolant, never dwell — low conductivity and chemical reactivity cause work hardening and tool cratering; stress relieve before finish machining to control distortion.
Can Ti-6Al-4V ELI (AM, F3001) be welded?
Excellent GTAW/EBW/LBW weldability with matching or ELI filler under high-purity argon or vacuum; full trailing/back purge to below ~150 ppm O₂ is mandatory, weld colour must be silver, and post-weld stress relief plus HIP restores ELI ductility.
Can Ti-6Al-4V ELI (AM, F3001) be formed, bent or molded?
Supplied as spherical powder for LPBF/EBM/DED — control powder O and H pickup, sieve and blend reused lots, use 30–60 µm layers with heated or preheated plate, and design self-supporting angles >40° to limit support removal on the hard alloy.
What surface finishes work on Ti-6Al-4V ELI (AM, F3001)?
Depowder, blast or chemically etch (HF/HNO₃) then abrasive-flow or electropolish internal channels; Type II colour anodising for implant coding, MAO/hydroxyapatite or plasma-sprayed Ti coatings for osseointegration; avoid chloride-bearing or mercury-containing marking media.
Ti-6Al-4V ELI (AM, F3001) 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 | 5.5 – 6.5 | 6 |
| V | 3.5 – 4.5 | 4 |
| FeELI limit | ≤ 0.25 | 0.18 |
| Oextra-low interstitial; rises on powder reuse | ≤ 0.13 | 0.1 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.05 | 0.01 |
| H0.0125 % max for some powder lots | ≤ 0.01 | 0 |
| Y | ≤ 0.01 | — |
| Other, eachresidual elements | ≤ 0.1 | — |
| Other, totalresidual elements | ≤ 0.4 | — |
| Ti | balance | — |
Ti-6Al-4V ELI (AM, F3001)-SR — frequently asked
What is Ti-6Al-4V ELI (AM, F3001)-SR used for?
Ti-6Al-4V ELI (AM, F3001)-SR is typically used for orthopedic and spinal implants, dental implant frameworks, surgical instruments, fatigue-critical aerospace parts and custom porous implant scaffolds. In short: toughest AM titanium alloy; implant-grade low interstitials; fatigue-critical printed parts.
What is the yield strength of Ti-6Al-4V ELI (AM, F3001)-SR?
Ti-6Al-4V ELI (AM, F3001)-SR has a typical yield strength of 990 MPa (144 ksi) and a tensile strength of 1,080 MPa (157 ksi) — stronger than 92% of titanium grades. Strength varies by condition: see the 6 listed tempers.
Is Ti-6Al-4V ELI (AM, F3001)-SR easy to machine?
Not especially — machinability is rated poor (20/100, worse than 68% of titanium grades). Machine like wrought Ti-6Al-4V: rigid setup, sharp uncoated-carbide or AlTiN tools, 30–60 m/min surface speed, heavy through-tool flood coolant, never dwell — low conductivity and chemical reactivity cause work hardening and tool cratering; stress relieve before finish machining to control distortion.
Can Ti-6Al-4V ELI (AM, F3001)-SR be welded?
Yes — weldability is rated very good (75/100). Excellent GTAW/EBW/LBW weldability with matching or ELI filler under high-purity argon or vacuum; full trailing/back purge to below ~150 ppm O₂ is mandatory, weld colour must be silver, and post-weld stress relief plus HIP restores ELI ductility.
What surface finishes work on Ti-6Al-4V ELI (AM, F3001)-SR?
Depowder, blast or chemically etch (HF/HNO₃) then abrasive-flow or electropolish internal channels; Type II colour anodising for implant coding, MAO/hydroxyapatite or plasma-sprayed Ti coatings for osseointegration; avoid chloride-bearing or mercury-containing marking media.
Can Ti-6Al-4V ELI (AM, F3001)-SR be formed, bent or molded?
Supplied as spherical powder for LPBF/EBM/DED — control powder O and H pickup, sieve and blend reused lots, use 30–60 µm layers with heated or preheated plate, and design self-supporting angles >40° to limit support removal on the hard alloy.
What is the maximum service temperature of Ti-6Al-4V ELI (AM, F3001)-SR?
Ti-6Al-4V ELI (AM, F3001)-SR is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Ti-6Al-4V ELI (AM, F3001)-SR and Ti-6Al-4V ELI (AM, F3001) BA-HIP?
SR is the default condition — default supplied condition for AM Ti-6Al-4V ELI: removes build residual stress and partially decomposes α′ while keeping high strength. BA-HIP: damage-tolerant condition for fracture-critical airframe/spinal hardware: lamellar α colonies give the highest K_IC and lowest crack-growth rate at reduced strength. Yield strength is 990 MPa in SR versus 830 MPa in BA-HIP.
Sources
- ASTM F3001 — Additive Manufacturing Ti-6Al-4V ELI (Extra Low Interstitial) with Powder Bed Fusion — ASTM International (2022)
- ASTM F136 — Wrought Ti-6Al-4V ELI Alloy for Surgical Implant Applications (UNS R56401) — ASTM International (2022)
- ASTM F3049 / F3122 — Characterizing Metal Powders and Evaluating Mechanical Properties of AM Metals — ASTM International (2022)
- AMS 4999 — Titanium Alloy Direct Deposited Products 6Al-4V, Annealed — SAE International (2016)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- MMPDS-18, Ti-6Al-4V chapter — Battelle / FAA (2023)
- EOS Titanium Ti64ELI material data sheet (LPBF) — EOS GmbH (2023)
- Arcam / Colibrium Additive Ti6Al4V ELI EBM material specification — GE Additive (2022)
- AP&C plasma atomised Ti-6Al-4V Grade 23 powder datasheet — AP&C (Colibrium Additive) (2023)
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.