Grade 5 vs Grade 23 Titanium Sheet and Plate
Grade 5 and Grade 23 are both Ti-6Al-4V-family titanium alloys, but Grade 23 is the extra-low-interstitial form. A buyer should choose from the applicable specification, application and qualification route rather than assuming one is a universal upgrade.
Key Purchasing Differences
| Factor | Grade 5 | Grade 23 |
|---|---|---|
| Alloy family | Ti-6Al-4V | Ti-6Al-4V ELI |
| Interstitial control | Standard Grade 5 limits | Tighter ELI limits under the invoked specification |
| Common standards | ASTM B265 or AMS4911 where applicable | ASTM B265 or ASTM F136 where applicable |
| Common intent | Aerospace, industrial and high-strength components | Implant, fracture-toughness-sensitive and qualified medical components |
Standard Compliance Is More Than Chemistry
ASTM F136 and AMS4911 can include requirements beyond nominal alloy chemistry. Confirm melt practice, condition, dimensions, mechanical testing, microstructure, surface, inspection and documentation from the actual purchase specification.
Match the Material to the Finished Component
State forming, machining, fatigue, fracture toughness, biocompatibility and regulatory requirements. Final device approval and process validation remain the responsibility of the device or component manufacturer.
Request the Correct Ti-6Al-4V Plate
Compare AMS 4911 Grade 5 titanium sheet and plate with ASTM F136 Grade 23 titanium sheet and plate. Include standard revision, dimensions, quantity, tests and documentation in the RFQ.
RFQ Checklist
- Grade 5 or Grade 23 and exact specification
- Standard revision and approved-source requirements
- Dimensions, tolerance, condition and finish
- Melt route, microstructure and testing where required
- Quantity, cutting and documentation