ASTM F136 Grade23 Ti‑6Al‑4V ELI Titanium Bar φ5‑300mm Custom Size

Опубликовано Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd от 2026-10-25

1. Core Parameters

• Material: Ti‑6Al‑4V ELI (Extra Low Interstitial), Grade23, UNS R56401
• Product Forms: Forged & rolled titanium round bar
• Diameter Range: Custom φ5 mm ~ φ300 mm; Max length ≤6000 mm
• Delivery Condition: Annealed
• Target Industries: Orthopedic implant, surgical device, medical OEM, biomedical component processing
• Lead‑time: Small‑diameter stock 8‑15 working days; large‑diameter forged custom 25‑40 working days

2. Product Definition

Grade23 Ti‑6Al‑4V ELI bar is biomedical‑grade alpha‑beta titanium alloy, distinguished from commercial Grade5 by strict limitation on interstitial elements oxygen, nitrogen and hydrogen. It is dedicated for implant‑grade blanks rather than general‑purpose industrial alloy.

• By metallurgy process: Vacuum remelt forged bar, hot‑rolled bar, precision peeled bar
• By structural specification: Small‑diameter rolled bar, large‑size forged ingot‑derived bar for heavy implant blanks

3. Material Advantage: Material‑Medium‑Corrosion‑Cleanliness

The core value of ELI grade lies in controlled interstitial content, directly improving fracture toughness and fatigue performance under long‑term human‑body service environment.

• Body‑fluid medium: Resists corrosion in blood, interstitial fluid and saline; minimizes metal ion release under cyclic load.
• Corrosion behaviour: Avoids local pitting corrosion under long‑term implantation; superior fatigue resistance comparing to standard Grade5 alloy.
• Cleanliness control: Independent production batch segregation to prevent cross‑contamination with industrial‑grade titanium; surface free from iron and heavy‑metal pickup during forging and peeling process.

4. Technical Standards

• Primary medical specification: ASTM F136
• Harmonized international norm: ISO 5832‑3
• Raw metallurgy reference: ASTM B348
• Documentation requirement: EN10204 3.1B MTC; interstitial element test report; full batch traceability for biomedical orders.

5. Full Manufacturing Workflow: From Drawing To Finished Goods

1. Raw material control: ELI‑grade titanium‑aluminum‑vanadium sponge alloy feedstock incoming inspection for O/N/H content.
2. Double VAR vacuum arc remelting: Dual remelting reduces segregation and stabilizes interstitial indexes; strictly segregated production lot to avoid mixing with Grade5.
3. High‑temperature forging / hot rolling: Multi‑direction forging optimizes grain flow for fatigue‑critical medical parts.
4. Annealing heat treatment: Stress‑relief & annealed cycle under vacuum furnace to meet biomedical mechanical requirements.
5. Heavy peeling machining: Fully remove surface oxidized and contaminated layer, no residual for downstream medical CNC processing.
6. Dimension sorting & batch marking: Each lot uniquely coded for trace‑back.
7. Final lab testing, visual inspection, dust‑free packing for export.

6. Key Component Performance

• Ultrasonic testing: 100% UT inspection per ASTM F136 requirements to detect internal void, inclusion and lamination defects critical for implant safety.
• Welding performance: Suitable for medical‑component welding with high‑purity argon shielding; ELI grade lowers crack risk for thin implant structures.
• Mechanical verification: Tensile, yield, elongation and fracture toughness testing; interstitial elements O, N, H reported on MTC document.

7. Application Industry — Medium‑Equipment‑Process

• Orthopedic implant manufacturing
  • Medium: Human body fluid, long‑term physiological saline environment
  • Equipment & parts: Large bone segment implant blanks, joint component preforms, fracture‑fixation substrate
  • Process: Forging preform, multi‑axis CNC machining, surface passivation
• Medical device OEM industry
  • Medium: Sterilization agent, cleaning fluid
  • Equipment & parts: High‑load surgical instrument blanks, non‑implant biomedical fixtures
  • Process: Turning, milling, ultrasonic cleaning, sterilization readiness

8. Selection Reference Table

Selection Type	Scenario	Suggested Option
Metallurgy‑based selection	Fatigue‑sensitive implant parts, long‑term implantation	Double VAR remelted forged Grade23 bar
Metallurgy‑based selection	Medium‑size blanks with cost control priority	Hot‑rolled peeled Grade23 bar
Structure‑based selection	Small‑diameter screw & pin blanks	φ5‑50mm rolled bar
Structure‑based selection	Joint & large bone implant preform	φ50‑300mm custom forged bar

9. Customizable Items & Accessories

• Custom service: Non‑standard diameter, special length, strict grain‑size requirement per medical drawing.
• Surface options: Peeled / ground finish; special surface roughness for biomedical processing.
• Auxiliary service: Fixed‑length cutting, independent batch coding, dust‑free medical‑grade packaging.

10. Lead‑Time, Test Report & Warranty

• Small‑diameter stocked items: 8‑15 working‑days upon order confirmation.
• Large‑diameter forged custom bar: 25‑40 working‑days depending on forging complexity.
• Delivery documents: Complete MTC including interstitial element data, UT inspection report, batch traceability record.
• Quality warranty: Material strictly conforms ASTM F136; reject support for non‑compliant material within receiving inspection window.

Why Choose SXQYTD

SXQYTD supplies ASTM F136 Grade23 Ti‑6Al‑4V ELI custom titanium bar with isolated batch management for biomedical requirements. Our products are exported to USA, Europe, Southeast Asia and Middle East medical manufacturers. Please send your drawing and technical specification for quotation.

Website: www.sxqytd.com

Contact us for your titanium project inquiry.