Titanium Rod for Aerospace Fasteners Supplier \| Gr5(TC4)/Gr23 ELI, AMS4928/AMS4965, VAR, UT Per AMS2631, MTC 3.1

Обзор продукции

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

Titanium Rod for Aerospace Fasteners | Gr5 (TC4) & Gr23 ELI, AMS 4928 / AMS 4965, VAR, MTC 3.1

Meta Description: Aerospace fastener rod from Baoji — Gr5(TC4) per AMS4928/AMS4965 and Gr23 ELI per ASTM F136, VAR double/triple melt, UT per AMS2631, EN 10204 3.1 with measured values. Round/hex blank for bolts, studs, pins. Annealed default; STA PO-stated. Traceability from ingot to fastener.

Overview — An Aerospace Fastener Starts at the Ingot, Not the Lathe

A bolt that goes on an airframe is not "a Ti-6Al-4V rod with threads". It is a documented chain: melt route → forging stock → heat treat condition → UT level → head-formability → MTC numbers. Break one link, the fastener fails audit — even if it machines beautifully.

We supply aerospace fastener blank rod: Gr5/TC4 (AMS 4928 annealed / AMS 4965 STA) and Gr23 ELI (ASTM F136 chain for fracture-critical/implant-adjacent programs). VAR double/triple melt, annealed default, UT per PO, heat-traceable ingot-to-bar. We do not relabel industrial B348 as "aerospace" — the spec on the PO is the contract.

Two Grades, Two Jobs

Selection rule: static high-load + weight save → Gr5 STA. Fracture-critical / fatigue-dominated / implant-adjacent → Gr23 ELI. Don't buy ELI "just because it sounds better" if the program calls AMS 4928 — pay for the chain you need, not the label.

Annealed vs STA — Write It Into the PO

STA strength steps down with diameter (quench rate drops in big sections) — AMS 4965 sets lower minima for larger bars; that is correct, not a defect. STA is never shelf-default; it needs PO-stated heat treat + re-MTC + weld/PWHT review.

Melt & Traceability Chain (The Part Auditors Check)

• VAR double (or triple on request) melt — ingot pedigree on MTC
• Ingot → forge stock → bar → cut blank: one heat number, no break
• EN 10204 3.1, mill-authorized IR, with measured chemistry + tensile (not minima-only)
• UT per AMS 2631 / AMS 2154 Class A/AA on request; immersion UT for critical lots
• Grain size reported; beta-transus / alpha-case check on PO for forged heads
• 3.2 (SGS/BV/TÜV) witness PO-fronted — not back-signed after shipment
• AS9100D-documented process available on qualification; confirm scope before PO

Rod Forms for Fastener Production

Head-Forming Reality (Cold Heading vs Machining)

• Annealed Gr5 cold-heads with controlled lube + sharp dies; work-hardens fast — heading trial on same heat first
• STA is not for cold heading — head in annealed state, then heat-treat fastener after forming if STA required
• Thread rolling > single-point threading for fatigue: compressive surface layer
• Cleanliness matters: oxide/degreaser residue jams headers; rod delivered VCI-wrapped, no shop oil
• Diameter consistency ±0.025–0.05mm (h6/h9) keeps head volume repeatable

Stock Scope (Honest)

Honest line: aerospace-grade heats are qualified, not "click-buy". We confirm AMS clause + melt route + UT level before PI — no ghost "AMS-ready shelf".

Chemistry Ceiling (Reference)

Mechanical Floor (Annealed, Measured on MTC)

STA Gr5 per AMS 4965: ~1100+ MPa UTS (size-dependent). Values on MTC are lot-measured, not brochure minima.

UT & Inspection Menu (PO-Selectable)

• UT: AMS 2631 / AMS 2154 Class A or AA, immersion, FBH calibre stated
• PT/ET per PO; PMI on request
• Macro/micro grain, beta fleck, alpha-case on forged head stock
• Straightness ≤0.5–1mm/m ground bar; chamfer 30–45° for feeder
• Each blank tagged: heat No. + PO ref + condition (ANN/STA)

Export Packaging for Aerospace Lots

• VCI + PE sleeve, ends capped, no carbon-steel contact
• ISPM-15 plywood crate, desiccant, humidity card on long-sea
• Sealed cert pouch: 3.1 MTC + UT report + process route summary
• Pre-ship photos: bundle / crate / label / pouch

Enquiry Template (Copy-Paste for Fastener QEs)

Grade: Gr5(TC4) / Gr23 ELI ___
Spec: AMS4928(ann) / AMS4965(STA) / ASTM F136 ___
Diameter: Ø___ mm (or SW___ hex)
Length: ___ mm × ___ pcs (blank vs finish-machined?)
Tolerance: h9 / h6 / per drawing
Condition: annealed / STA (heat-treat PO?)
Melt: VAR double / triple ___
UT: AMS2631 Class A / AA, FBH ___ mm
Ends: chamfer ___° / sawn / faced
Surface: centerless ground Ra___ / peeled
Head route: cold-head / hot-forge / CNC turn
Cert: 3.1 / 3.2 (TPI: ___)
AS9100 / NADCAP scope needed? Y/N
Incoterm: EXW Baoji / FOB Shanghai / DAP ___

FAQ — Titanium Rod for Aerospace Fasteners

Q1: Is industrial B348 Gr5 acceptable for aerospace fasteners?
A: Only if the procurement doc accepts B348. Airframe programs usually require AMS 4928 (annealed) or AMS 4965 (STA) + VAR melt + UT level. We supply both routes; PO names the spec.

Q2: Can you ship STA from stock?
A: No. Annealed is default. STA = PO-stated solution treat + age, re-MTC, size-dependent strength. Quoted lead honest, not "shelf STA".

Q3: Gr23 vs Gr5 for my bolt?
A: Gr5 for high static load + weight. Gr23 ELI for fracture-critical / fatigue / cryogenic / implant-adjacent. ELI costs more and buys toughness, not raw strength.

Q4: Cold heading without cracking?
A: Annealed Gr5 + clean lube + same-heat trial. STA not headable. We support a pre-production header sample before full lot.

Q5: UT level guaranteed?
A: Per PO — AMS 2631 Class A/AA, immersion, FBH calibre written into order. "Zero defect" not contracted; acceptance threshold is.

Q6: MTC with real numbers?
A: Yes — measured chemistry + tensile + heat No. + melt route. Not minima-only.

Q7: Traceability depth?
A: Ingot heat → forge stock → bar → blank. One number crosses the cut. AS9100 process docs on qualification.

Q8: Hex blank for bolt head?
A: SW cold-drawn h11/h9, chamfered, feeder-ready. Skips hex-mill, keeps grain in head.

Q9: Welding STA fastener blanks?
A: Not without PWHT re-evaluation. Head attach by friction weld reviewed per procedure.

Q10: Lead time?
A: In-stock annealed Gr5 heat + PO → same-week cut/dispatch. STA/ELI/UT-class critical → forge+melt schedule quoted before PI.

Request a Quote

Email: sales@[yourdomain].com

Send spec (AMS clause) + grade + Ø + length + qty + UT/class. Reply in 24h: melt route, heat status, condition, MTC type, dispatch date.

About: Baoji Titanium Valley aerospace-blank supplier. Titanium rod for aerospace fasteners — Gr5(TC4) AMS4928/AMS4965 and Gr23 ELI F136 chain, VAR melt, UT per AMS2631, EN 10204 3.1 with measured values. Annealed default; STA PO-stated. No industrial B348 relabeled as "aero". Ingot-to-fastener traceability, or it didn't happen.