What Is a Gr4 Titanium Rod and Its Application Areas?
- Gr4 Titanium Rod
What is Grade 4 titanium rod? Grade 4 / UNS R50700 is an unalloyed titanium bar grade. It is considered when a project needs the Grade 4 strength requirement in a rod or bar form, subject to the actual drawing, condition, corrosion environment and fabrication route.
Start with the bar specification
ASTM B348 covers titanium and titanium alloy bars and billets, including Grade 4. An RFQ should state the applicable edition, diameter and tolerance, length, straightness, delivery condition, surface finish, quantity and required certificate. A catalog diameter range or machining tolerance should not be presented as a current supplier guarantee without a written capability confirmation.
Application areas and boundaries
- Chemical equipment: evaluate the precise medium, concentration, temperature, loads and joining details before specifying a shaft or machined part.
- Precision components: verify machining allowance, surface requirement, heat or lot traceability and inspection plan.
- Medical-device manufacture: distinguish raw material conformity from finished-device safety and performance. Where required, ASTM F67 addresses unalloyed titanium material for implant manufacture; it does not approve a device or define MRI conditions.
Acceptance checklist
| Field | Buyer requirement |
|---|---|
| Identity | Grade 4 / UNS R50700 and contracted standard edition. |
| Geometry | Diameter, tolerance, length, straightness and surface. |
| Performance | Specified test results for the supplied lot and any component trials. |
| Documentation | Material certificate, heat/lot traceability and agreed supplementary reports. |
Read the Grade 4 overview, review the rod category and submit a technical RFQ. Sources: ASTM B348 scope and ASTM F67 scope.
Frequently asked questions
Is Grade 4 titanium rod a titanium alloy?
Grade 4 is an unalloyed titanium grade. Verify the exact designation and acceptance requirements in the contracted standard.
Can rod grade alone establish MRI safety?
No. MRI conditions are a finished-device question that requires specific evaluation.