Grade 2 vs Grade 5 Titanium Circular Blanks
Grade 2 circular blanks emphasize commercially pure titanium corrosion resistance and formability; Grade 5 Ti-6Al-4V blanks are selected when higher material strength is required. A cut blank is intermediate stock, not a qualified finished disc.
Grade Comparison
| Item | Grade 2 | Grade 5 |
|---|---|---|
| UNS/family | R50400, commercially pure | R56400, Ti-6Al-4V |
| Selection focus | Corrosion resistance and formability | Higher strength and performance-critical parts |
| Design review | Environment, allowable data, thickness, fatigue, joining and qualification | |
Source Plate and Blank Definition
State the plate standard and condition, blank OD, thickness, tolerances, cutting method, edge condition, flatness, machining allowance and quantity. Material certificates describe source plate; the finished component remains controlled by its drawing.
Machining and Inspection
Define whether the blank is as-cut, ground or finish-machined. Specify dimensional inspection, surface acceptance, edge cleanup, MTC, heat traceability and any ultrasonic or penetrant examination required by the project.
Compare Blank Options
Grade 2 Circular Blank, Grade 5 Circular Blank and Titanium Plate & Sheet.
RFQ Checklist
- Grade, plate standard/revision and condition
- OD, thickness, tolerance and quantity
- Cut route, edge condition and allowance
- Finished use and service environment
- Inspection, certificates and traceability
FAQ
Can Grade 5 replace Grade 2 because it is stronger?
No. Corrosion, design, fabrication and qualification must also be reviewed.
Is a circular blank a finished pressure component?
No. It is stock for further manufacturing unless a drawing and acceptance plan explicitly define otherwise.
Related Reading
Specify Circular Blanks · Cutting Route Comparison · Blank vs Forged Disc