Short answer: Pick titanium by service, not just price. Grade 1/2 (commercially pure) give the best corrosion resistance and formability for chemical and marine use; Grade 5 (Ti-6Al-4V) adds strength for aerospace and structural parts; Grade 7 resists crevice corrosion; Grade 23 (ELI) is the surgical implant grade. Match the grade to environment, strength, and certification needs.
At a Glance
Start With the Environment
For corrosive or marine service where formability matters most, commercially pure Grade 1/2 are the safe, weldable choice. If you also need crevice-corrosion resistance in hot brine, step up to Grade 7 (palladium-added). Where strength-to-weight rules – airframes, engine parts, implants – Grade 5 dominates.
Strength vs Formability Trade-off
The chart maps grades to their priority. Pure grades are easy to form and weld but limited in strength; alpha-beta alloys like Grade 5 roughly double the strength at the cost of harder machining. Grade 23 keeps Grade 5’s strength with extra-low interstitial content for fracture-critical medical parts.
Certification and Traceability
Aerospace and medical jobs require full mill-test reports, heat traceability, and often AMS or ASTM specs. Tell your supplier the applicable standard (ASTM B265, AMS 4911, etc.) so the material arrives audit-ready.
Sourcing the Right Grade from HXSCO
See HXSCO’s titanium product page for the grades and forms we stock. Send the grade, form, dimensions, and certification you need and we will quote with mill-test documentation and lead time.
Часто задаваемые вопросы
Grade 5 (Ti-6Al-4V) is the most common alloy grade for aerospace and structural use; Grade 2 is the most common commercially pure grade.
Commercially pure Grade 1/2 offer the best general corrosion resistance; Grade 7 adds palladium for superior crevice corrosion resistance in hot chlorides.
Grade 23 (Ti-6Al-4V ELI) is the extra-low-interstitial implant grade used for surgical implants, screws, and critical medical devices.
Yes. Grade 5 roughly doubles the tensile strength of Grade 2 but is harder to machine and form.
Give the grade, form, dimensions, quantity, and any standard or certification (ASTM B265, AMS, mill-test report).
Ready to source Titanium Grades Guide from HXSCO?
Send us the grade, form, dimensions, quantity, and any certification or test requirements. HXSCO replies with a competitive quote, lead time, and mill-test options.
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