Titanium powder for 3D printing is a feedstock made from commercially pure titanium or a titanium alloy. Start with the grade required by the drawing, then match particle size and lot acceptance to the printing process. Ti6Al4V Grade 5, Grade 23 ELI, Grade 2 and TA15 are different material choices, not interchangeable versions of one powder.
If the grade has not been fixed, use the component duty to shortlist candidates before requesting a sample. Compare the titanium powder product routes for candidate supply specifications; use this guide to define what the quotation and incoming inspection must establish.
How do I choose the right titanium powder grade?
Choose in this order: (1) the grade the drawing or governing specification requires, (2) the controlling service requirement, (3) the printing process, then (4) the PSD cut and lot evidence. If no grade is specified yet, use the duty to shortlist:
| If the controlling requirement is… | Start with | Typical datasheet basis to compare | Check before ordering |
|---|---|---|---|
| Strength-to-weight in structural parts | Ti6Al4V Grade 5 (TC4) | Heat treated LPBF bars: ≥950 MPa tensile, ≥900 MPa yield, ≥10% elongation | Fatigue basis, HIP, orientation |
| Tighter interstitials for implant or fracture-critical work | Ti6Al4V Grade 23 ELI | Lower O and Fe limits than Grade 5 per the governing specification | Specification edition, device route |
| Corrosion and ductility rather than strength | CP titanium (Grade 2 / TA1 basis) | Heat treated LPBF bars: ≥350 MPa tensile, ≥250 MPa yield, ≥30% elongation; O ≤0.15 wt.% | Exact CP designation, media, pressure |
| Strength retention around 500–600 °C | TA15 near-alpha | Heat treated LPBF bars: ≥750 MPa tensile at 500 °C, ≥600 MPa at 600 °C | Temperature-time profile, program approval |
Datasheet figures are typical partner-plant values for LPBF test bars shown on the Ti6Al4V, CP titanium and TA15 grade pages. They describe one machine-and-heat-treatment basis, not a guarantee for every build. For finished-part requirements across titanium alloys made by powder bed fusion, ASTM F3302-18 covers feedstock, processing, thermal post-processing, HIP, chemistry, mechanical properties and certification; the Ti-6Al-4V-specific routes are listed below.
Three common mistakes: choosing Grade 23 “to be safe” when the specification calls for Grade 5 (ELI control does not raise strength); treating TA1, Grade 1 and Grade 2 as interchangeable; and specifying an LPBF cut for EBM or DED.
Main titanium powder families
Ti64 denotes the Ti-6Al-4V alloy family, but an RFQ should state Grade 5 or Grade 23 and the governing specification. Grade 5 is a candidate for strength-led lightweight structures such as brackets, nodes and manifolds. Suitability still depends on the load case, fatigue evidence, manufacturing route and final condition.
Grade 23 is the extra-low-interstitial (ELI) Ti-6Al-4V route. It is considered where the specified chemistry and interstitial controls require it, including some implant programs. The label does not confer medical-device approval or prove the properties of a printed part. For the acceptance distinction, use the existing Grade 23 vs Grade 5 comparison.
Grade 2 is commercially pure titanium, considered when corrosion service and ductility are more important than Ti6Al4V-level strength. TA1 is a separate designation that requires its own standard and chemistry review; do not infer Grade 2 equivalence from a commercially pure titanium label. The Ti64 vs Grade 2 guide explains the strength-versus-corrosion selection boundary.
TA15 is a near-alpha titanium alloy considered for program-defined elevated-temperature structural duty. Service temperature alone is not enough to substitute it for another titanium alloy; the design specification, process qualification and mechanical evidence must support the choice.
Particle size and process fit
LPBF candidate powder cuts include ranges such as 15–45 µm or 15–53 µm, subject to the machine and agreed specification. These are screening examples, not universal acceptance limits. EBM and powder-fed DED can require different cuts and behavior; an LPBF lot should not be assumed compatible with either process.
Ask for measured PSD and its method, not just a nominal sieve range. Confirm fines/oversize limits, sampling, morphology and flow or spreading evidence against the intended equipment. ISO/ASTM 52907:2019 provides a framework for characterizing metal powders, including traceability, sampling, particle size and chemistry; it does not make a particular lot machine-qualified. The LPBF particle-size guide covers the detailed sizing questions.
Oxygen control is not optional
Specify the oxygen and other interstitial limits required by the governing material specification, together with the test method and sampling basis. Do not use one oxygen limit for every titanium grade, or assume the result on a virgin lot also describes powder after handling and reuse.
The NIST review of reused Ti-6Al-4V feedstock describes variation in oxidation behavior across reuse studies. A fixed reuse count is therefore not a substitute for a controlled powder history and acceptance plan. Request virgin/reused status, blending records where applicable, exposure controls and the agreed retest criteria. Use the titanium oxygen-limit guide to frame that discussion; storage and handling must also follow the applicable SDS and site safety procedures.
What ASTM F2924 and F3001 do, and do not, establish
ASTM F2924-14(2021) addresses Ti-6Al-4V components produced by full-melt powder bed fusion; ASTM F3001-14(2021) addresses the ELI route. Neither should be reduced to a generic stamp on a powder COA. Specify the applicable edition and purchaser requirements, and separate feedstock acceptance from build, heat-treatment, inspection and finished-part qualification. Neither reference alone establishes approval for a medical device.
Titanium grade screening matrix
| Search or sourcing intent | First grade family to investigate | Evidence that should control the decision |
|---|---|---|
| Lightweight structural AM | Ti64 Grade 5 / TC4 | Load case, heat treatment, fatigue basis, chemistry and lot traceability |
| Implant or tightly controlled Ti64 route | Ti64 Grade 23 | Governing specification, interstitial control, cleaning, surface and final-device qualification |
| Corrosion-led commercially pure titanium route | Exact specified CP grade, such as Grade 2 | Grade standard, chemistry, media, pressure status and fabrication route; verify any proposed TA1 substitution separately |
| Elevated-temperature structural titanium | TA15 or another program-defined alloy | Service temperature, material specification, process qualification and mechanical evidence |
This is a routing table, not an equivalency statement. The alloy must still be checked against the governing design and regulatory requirements.
What to specify in an inquiry
For a first inquiry, send the grade or application, process/machine, requested powder cut, sample or production quantity, and destination. Add a drawing or material specification if available. Unknown limits can remain open for technical review; there is no need to invent a complete specification before starting the conversation.
Before approving a lot, agree the chemistry and interstitial limits, measured PSD and method, powder history, packaging and required documents. Request the source-specific TDS/SDS and lot-linked COA; a typical data sheet is not a batch release certificate. State any final-part qualification needs separately from the powder purchase.
Start a grade-specific inquiry for Ti6Al4V Grade 5, Grade 23 ELI, Grade 2 or TA15. If the grade is undecided, send the application for review and identify the decision that still needs evidence.
Related titanium powder pages
For China-origin purchasing, the titanium powder sourcing and export guide separates grade-specific capacity, dual-use licensing, buyer documents and conditional delivery planning, with clearly labeled Saudi and US procurement scenarios.
For alloy-specific detail, continue with TC4 / Ti-6Al-4V powder, Grade 23 vs Grade 5 titanium powder, Ti64 Grade 23 surgical guide and instrument hardware, TA1 commercially pure titanium powder, and TA15 near-alpha titanium powder.