Titanium Bar for Medical Implant Grade 23 \| Ti-6Al-4V ELI (R56401), ASTM F136, Heat-Traceable

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Проверено и поддерживается инженерной командой Shaanxi Qianyi Tuoda Technology Co., Ltd.

Titanium Bar for Medical Implant Grade 23 | Ti-6Al-4V ELI (R56401), ASTM F136, Traceable From Ingot to Bar

Meta Description: Titanium bar for medical implant Grade 23 (Ti-6Al-4V ELI, R56401) to ASTM F136. O≤0.13%, low interstitials, ingot-to-bar heat traceability, UT per PO, EN 10204 3.1 for DMR. Not industrial B348 passed as implant. Quote with standard edition.

Overview — "Grade 23" on Paper Is Not Implant Approval

Gr23 (UNS R56401, Ti-6Al-4V ELI, 国标 TC4ELI) is the low-interstitial version of Ti-6Al-4V. The whole point of ELI is not a cleaner label — it's lower oxygen/nitrogen/hydrogen so the bar resists brittle crack initiation under cyclic load. That's why permanent implants (bone screws, spinal rods, hip stems, dental abutments) spec F136, not B348.

We don't sell "medical-grade vibes". We supply bar against the standard your DMR names: ASTM F136 for implant wrought ELI; ASTM B348 Gr23 only where the PO explicitly accepts industrial bar basis. The cert carries real numbers — O, N, H, Fe — not "complies".

F136 vs B348 Gr23 — The Line Buyers Miss

Key sentence for QA: A heat that passes B348 can still fail F136 on oxygen/iron/UT alone. B348 is a supply-chain standard; F136 is an implant-acceptance standard. Don't let a trader swap them.

ELI Chemistry (Why Interstitials Matter)

ELI = Extra Low Interstitials. The alloy is "the same Ti-6Al-4V" only on the Al/V line — everywhere that controls crack growth, it is not the same material.

Mechanical Floor (Annealed, F136 Reference)

Values are standard-reference floors, not guaranteed for every section. Final acceptance = current standard edition + section size + PO acceptance matrix.

Melting & Traceability Route (The Part Auditors Open First)

• VAR (vacuum arc remelting) route — double/triple melt on PO
• Ingot heat No. → forged billet → rolled bar → finished cut, one heat chain
• Each finished bar tagged with heat No. + PO ref
• MTR lists: actual O/N/H/Fe/C numeric, tensile, RA, grain/micro per spec
• EN 10204 3.1 (mill-authorized IR); 3.2 (SGS/BV/TÜV) witness at buyer cost, PO-fronted
• Records support DMR / MDR file; cert does not replace the drawing-named standard

Stock & Supply Scope (Honest)

Honest note: implant ELI bar is not "click-buy commodity". We confirm melt route + lead + cert type before PI — because a wrong heat here is a recall, not a return.

UT & Inspection Matrix (Write Into PO)

• UT per ASTM E2375 / F136-level acceptance (FBH calibre per PO)
• Microstructure: alpha-beta equiaxed per applicable implant spec
• Surface contamination check (Cu/Fe residue) on request
• Grain-size / beta-fleck review where PO mandates
• Hardness + tensile coupon from representative section
• Clean-room pack / double-bag option for machined blanks

Where Gr23 ELI Bar Goes

• Ortho: bone screws, locking plates, intramedullary nails, spinal rods
• Joint: hip stem forgings feed, knee femoral components
• Dental: implant fixtures, abutments, CAD/CAM mill blanks
• Craniofacial: maxillofacial plates (contour-tolerant ELI)
• Surgical instruments (non-implant but sterile-cycle loaded)
• Cryogenic hardware (ELI toughness bonus, non-medical projects)

Gr23 vs Gr5 — The Procurement One-Liner

Enquiry Template (Copy-Paste for QA/Procurement)

Grade: Gr23 / TC4ELI / R56401 ___
Standard: ASTM F136 / F136+ISO 5832-3 / B348 Gr23 (state if industrial basis OK) ___
Melt route: VAR double / triple ___ 
Diameter: Φ___ mm (h9/h7/h6 or per drawing)
Length: ___ mm × ___ pcs
Condition: mill annealed / duplex annealed
Ends: sawn / faced / chamfer
UT: F136 level ___ / E2375 ___ / none
Micro: equiaxed alpha-beta report? Y/N
Cert: EN 10204 3.1 / 3.2 (TPI: ___)
DMR support docs: chemistry numeric / tensile / RA / grain ___ 
Clean pack: double-bag / cleanroom ___ 
Port: ___ (FOB Shanghai default)

FAQ — Medical Implant Grade 23 Bar

Q1: Can I use industrial Gr5 B348 for an implant?
A: No. F136 mandates ELI chemistry + implant acceptance. B348 Gr5 has higher O ceiling — disqualified on interstitials alone.

Q2: Is "Grade 23" on the cert enough?
A: Not unless the MTR shows actual O/N/H numbers and the named standard (F136 or B348 Ed.). "Grade 23 compliant" without values = reject.

Q3: B348 Gr23 vs F136 — same bar?
A: Same ELI chemistry window, different acceptance lineage. F136 adds implant UT/micro/traceability layers B348 doesn't mandate.

Q4: Oxygen really 0.13% max?
A: Yes for ELI. Above that it drifts toward standard Gr5 interstitial behavior — toughness loss under cyclic load.

Q5: Do you melt in-house?
A: We confirm the melt route (VAR) with the mill of record; heat chain ingot→bar documented. We don't relabel trader stock as "own-melt implant".

Q6: ISO 13485?
A: State your QMS evidence requirement in PO. We supply material certs + traceability for your DMR; the device master record stays with the license holder.

Q7: UT level for spinal rod?
A: F136-equivalent acceptance, FBH calibre per PO. Write the level — don't leave "supplier default".

Q8: h7 ground ELI blank?
A: Yes, common sizes to order; ground after anneal, straightness + Ra reported.

Q9: Dispatch?
A: Heat-confirmed ELI lead stated honest (not "same-day commodity"). Air for clinical trial line at buyer cost.

Q10: Sample for validation lot?
A: Small cutoff from same heat, courier cost, deductible from validated PO — with full MTR, never "visual OK".

Request a Quote

Email: sales@[yourdomain].com

Send standard edition + diameter × length × qty + cert type. Reply within 24h: confirmed melt route, lead, EXW/FOB, UT scope, DMR doc list.

About: Baoji Titanium Valley supplier. Gr23 (Ti-6Al-4V ELI, R56401) bar for medical implant applications — ASTM F136 route on PO, ingot-to-bar heat traceability, O≤0.13% ELI chemistry, UT/micro per spec, EN 10204 3.1 for your DMR. We don't pass industrial B348 as implant. The cert carries numbers, not adjectives.