TA1 is commonly associated with commercially pure titanium rather than a strengthened alpha-beta alloy. In AM, that makes it relevant for projects that value corrosion resistance, ductility, and cleaner alloy chemistry more than maximum structural strength.
TA1 / CP titanium powder grade data
TA1 is a Chinese designation for commercially pure titanium; Chinese titanium designations and chemistry are defined in GB/T 3620.1-2016. ASTM grades (Grade 1, Grade 2) use their own chemistry tables, so do not assume TA1 equals Grade 2. The catalog lists CP titanium on the CP titanium Grade 2 page, where the partner datasheet chemistry is given on a TA1 basis.
Typical partner-plant datasheet limits, wt.% (the quoted lot COA governs):
| Element | Limit |
|---|---|
| Ti | Balance |
| Fe | ≤0.25 |
| C | ≤0.10 |
| O | ≤0.15 |
| N | ≤0.03 |
| H | ≤0.015 |
| LPBF test bars, heat treated, room temperature | Value |
|---|---|
| Tensile strength | ≥350 MPa |
| Yield strength | ≥250 MPa |
| Elongation | ≥30% |
| PSD cuts offered | 15–45 µm, 15–53 µm (LPBF); 45–105 µm (coarser feed) |
Oxygen and iron are the main chemistry differences between CP titanium grades, so a COA must be reported against the exact table you buy to. If your specification is ASTM Grade 1 or Grade 2, send that table and ask for results against it. ASTM F3302-18 covers finished-part requirements for titanium made by powder bed fusion; ISO/ASTM 52907:2019 covers how to characterize the powder itself.
Where CP titanium makes sense
Commercially pure titanium is often considered when the component will operate in corrosive environments, when material response needs to stay comparatively ductile, or when a project is evaluating biocompatibility-oriented titanium routes. That does not make TA1 a universal substitute for Ti-6Al-4V. It simply means the design priorities are different.
TA1 is usually worth reviewing when:
- corrosion resistance matters more than peak structural strength
- the project wants a cleaner titanium chemistry route
- the service environment is chemically demanding
- the part is not load-driven like a Ti64 aerospace-style bracket
That is why Grade 2 and Ti64 should be treated as different answers to different questions.
What controls performance
For CP titanium, interstitial control is critical because oxygen and nitrogen can move strength and ductility in opposite directions very quickly. Surface condition, contamination control, and final defect population are also central to how the part actually behaves after printing.
This is one of the easiest places to oversimplify the alloy. Commercially pure titanium is not “easy titanium.” It is still a reactive powder family, and chemistry discipline is still central to final performance.
Powder and process checks
The same process discipline used for other titanium powders still applies: PSD fit, morphology, chemistry, batch identity, and packaging quality all matter. Because CP titanium is often selected for corrosion- or application-specific reasons, the inspection plan should match the actual use case instead of relying on generic titanium assumptions.
For example, a corrosion-driven industrial part and a biocompatibility-related development program will not always ask for the same validation focus.
If the project is undecided between commercially pure titanium and Ti64, use the side-by-side guide to Ti64 vs Grade 2 titanium powder.
Corrosion-facing chemical hardware and biomedical TA1 concepts are covered on this consolidated grade page. State the exact CP titanium grade, media or biological context, pressure or device status, process, surface and cleaning requirements, and governing acceptance basis before requesting a quote.
CP titanium for chemical and biomedical requirements
TA1 and other commercially pure titanium grades are reviewed when corrosion behavior, biocompatibility-related material selection, ductility, or lower alloy content matters more than Ti64 strength. Chemical hardware and biomedical components share the alloy-family question but require different final acceptance.
| Application direction | Why CP titanium is reviewed | Evidence that remains application-specific |
|---|---|---|
| Chemical flow or corrosion-facing hardware | Titanium corrosion behavior and complex AM routing | Exact media, concentration, temperature, pressure, surface and joining basis |
| Biomedical or device component | CP titanium material route and controlled chemistry | Device specification, biocompatibility, cleaning, sterilization and regulatory acceptance |
| Lightweight industrial part | Titanium corrosion and low density without Ti64 alloying | Strength, fatigue, wear and economic comparison with Ti64 or stainless |
“TA1,” “Grade 1,” “Grade 2,” and “CP titanium” should not be treated as synonyms without the referenced chemistry. State the exact designation, controlled interstitials, units, specification edition, and final part requirements.
Powder and application boundary
Request lot chemistry, oxygen/nitrogen/hydrogen limits where applicable, powder route, PSD method, morphology, contamination controls, powder condition, packaging, and traceability. For chemical hardware, add media compatibility, pressure, leak testing, cleaning, and surface requirements. For biomedical work, add the responsible device manufacturer’s validation and regulatory route.
RFQ fields
Provide the exact CP titanium grade/specification, application, process and machine, target PSD, quantity, interstitial limits, powder condition, destination, and documents. Request the COA, PSD report, TDS/SDS, and available SEM or morphology evidence. If strength-to-weight is the main driver, compare Ti64 versus Grade 2 before fixing the alloy.