No primary melting
Sponge, VAR and EBM melting and wire-bar production is not in our vertically integrated scope. We source wire-bar and rod from upstream mills; our scope is drawing, annealing, surface finishing, and quality verification.
Boze Titanium Manufacturing Center | Mill Products / Wire | AS9100D
Titanium Wire โ Welding, Medical & Additive Stock
Titanium wire in coil and straight lengths in CP Gr1/2, aerospace Gr5 (Ti-6Al-4V), medical Gr23 (Ti-6Al-4V ELI) and Gr9 (Ti-3Al-2.5V). Diameter ร0.1โ6.0 mm, coil and spooled, bright / matte / oxide-dark finishes. Supplied to ASTM B863 / AMS 4951 with EN 10204 3.1 MTR; standard stock ships in 5โ7 days with non-standard alloys and small-diameter draws in 4โ6 weeks.
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ร0.1โ6.0 mm Diameter range
CP / ELI / ฮฑ-ฮฒ Grade family
Coil / Spool Pack form
5โ7 days Standard lead time
ASTM B863 AMS 4951 AMS 4954 AWS A5.16 EN 10204 3.1 AS9100D
Honest Positioning
Where We Do Not Compete
BOZE Metal is a sourcing and processing partner for titanium wire, not a primary melter. The following scope clarifications are necessary for accurate technical and commercial alignment on welding, medical and additive-manufacturing wire orders.
No blanket aerospace-grade
Material specifications are applied "where applicable" per order. AS9100D governs our QMS, not every shipment classification. Confirm criticality class, specification (ASTM B863, AMS 4951, AWS A5.16), and required documentation per RFQ.
No blanket medical claim
We supply wire to medical material specifications (ASTM F67, F136) where applicable. We are a material supplier and processor, not a finished medical device manufacturer; downstream device-level certification remains the device maker responsibility.
No 24-hour quote promise
Engineering review and quotation timelines are confirmed at the RFQ stage based on the order complexity, alloy, diameter, and downstream processing required. Standard stocked items typically receive a same-week response.
NDT scope is order-specified
100 percent visual and eddy-current continuity testing is standard on medical-grade wire. Spring and aerospace wire is class-tested per spec; welding wire is lot-tested for chemistry, surface contamination, and cast-helix. Test scope is stated at the RFQ, not assumed by default.
Grade Library
Wire Grade x Form Matrix
Seven procurement-grade entries mapping chemical composition, UNS designation, available wire form (coil, straight, spool), and typical use. Specific diameter, surface finish, and temper are confirmed per order.
| Family | Grade / UNS | Composition | Form | Typical Use |
|---|---|---|---|---|
| CP Titanium | Grade 1UNS R50250 | Unalloyed Ti, lowest interstitial | Coil, Straight, Spool | Formable welding feedstock, biomedical forming wire |
| CP Titanium | Grade 2UNS R50400 | Unalloyed Ti, balanced strength | Coil, Straight, Spool | General-purpose welding wire, mesh feedstock |
| CP Titanium | Grade 4UNS R50700 | Unalloyed Ti, highest CP strength | Straight, Spool | High-strength fastener wire, surgical hardware |
| Aerospace a-b | Grade 5 (Ti-6Al-4V)UNS R56400 | 6% Al, 4% V, a-b alloy | Straight, Spool | AM feedstock, high-strength spring wire |
| Aerospace a-b ELI | Grade 23 (Ti-6Al-4V ELI)UNS R56401 | 6% Al, 4% V, low interstitials | Straight, Spool | Fracture-critical medical wire |
| Near-a | Grade 9 (Ti-3Al-2.5V)UNS R56320 | 3% Al, 2.5% V | Coil, Straight, Spool | Aerospace tubing feedstock, structural wire |
| Corrosion-resistant | Grade 7 (Ti-Pd)UNS R52400 | CP + 0.12-0.25% Pd | Coil, Straight | Reducing-acid mesh, electrolyzer electrode |
Specification Reference
Wire Specification EAV Reference
Nine procurement-critical attribute, value, and standard references for titanium wire. Use this as a cross-check table when drafting an RFQ; the applicable spec is selected per order.
| Attribute | Value / Range | Standard |
|---|---|---|
| Diameter range | 0.10 mm to 6.0 mm (0.004 inch to 0.236 inch) | ASTM B863 S5, AMS 4951 S3.1 |
| Diameter tolerance | Plus or minus 0.01 mm on fine wire below 0.5 mm; plus or minus 0.025 mm on 1.0-6.0 mm | ASTM B863 S5 |
| Surface finish | Bright drawn, matte etched, pickled oxide-removed, or oxide-dark as-annealed | AMS 4951 S3.2 |
| Coil and spool formats | Layer-wound coil, traverse-wound spool, pancake; up to 50 kg spool | Customer specification |
| Tensile strength (UTS) | Gr.2 >= 345 MPa, Gr.5 >= 895 MPa, Gr.23 >= 860 MPa | ASTM E8 |
| Elongation | Gr.2 >= 20 percent, Gr.5 >= 10 percent, Gr.23 >= 10 percent | ASTM E8 |
| Weldability classification | AWS A5.16 ERTi-1, ERTi-2, ERTi-5, ERTi-9 | AWS A5.16, ASME Sec. II Part C |
| NDT | 100 percent visual and eddy-current continuity on medical-grade wire; class-by-class per spec | ASTM B863 S7 |
| Mill certification | EN 10204 3.1 standard; 3.2 with independent witness on request | EN 10204, ASTM B863 S9 |
Welding and Fabrication, AWS A5.16
Welding Wire and Filler Metal
Grade 1, Grade 2, Grade 5, and Grade 9 welding wire in bright or pickled finish, classified to AWS A5.16 (ERTi-1, ERTi-2, ERTi-5, ERTi-9). Spool sizes from 0.5 kg up to 50 kg layer-wound or traverse-wound. Surface contamination checked lot-by-lot; the 3.1 MTR carries AWS classification, chemistry, and tensile results traceable to the originating heat.
- AWS A5.16 classification on every spool label
- Bright or pickled finish only; no oxide-dark feed
- Cast-helix under 25 mm per meter for feed consistency
Medical and Additive Manufacturing, ASTM F67 / F136
Medical Wire and AM Feedstock
Grade 23 (Ti-6Al-4V ELI) medical wire is drawn in a clean-room environment, vacuum-sealed in medical-grade pouches, and shipped with full lot traceability for downstream device forming. Grade 5 (Ti-6Al-4V) AM feedstock is bright-clean with controlled ovality and surface state, suitable for additive-manufacturing deposition heads.
- White-gown clean-room draw and packaging
- Diameter tolerance plus or minus 0.02 mm for AM feed
- Vacuum-sealed foil pouch on medical wire
Additional Applications
Wire Across Process Industries
Four additional service environments where titanium wire is the default specification, with the grade and form that procurement teams typically call out.
Oil and Gas
Down-hole logging cable, instrument-tubing wire, and corrosion-resistant mesh for offshore platforms. Grade 2 standard, Grade 7 for reducing-acid exposure.
Aerospace
Spring wire for fasteners and clips; hydraulic-line welding wire; fastener-stock wire. Grade 5 and Grade 9 selected by strength and formability.
Medical Devices
Suture and clip wire; orthodontic wire; braided-catheter reinforcement. Grade 23 (Ti-6Al-4V ELI) is the default medical material specification.
Chemical Processing
Woven mesh, electrolyzer electrode wire, and chemical-industry forming. Grade 7 (Ti-Pd) for reducing-acid exposure where applicable.
Production Workflow
Wire Production Workflow
From incoming rod stock verification through surface preparation, multi-pass drawing, final anneal, NDT, and EN 10204 3.1 MTR issuance - six controlled stages with documentation checkpoints at each handoff.
- 01
Incoming rod stock verification
Grade-certified titanium rod or wire-bar is received with upstream-mill heat-lot, chemistry, and macro-etch records. Lot is verified against ASTM B863 or AMS 4951 before the drawing line starts.
- 02
Surface preparation
Oxide and surface contamination are removed by alkaline cleaning, acid pickling, and a lubricant coat applied to the rod surface to support multi-pass drawing.
- 03
Multi-pass cold drawing and intermediate anneal
Wire is drawn through successive diamond dies with area reductions of 20-30 percent per pass. Intermediate vacuum anneals restore ductility so further reduction is achievable without cracking.
- 04
Final anneal and surface finish selection
Bright anneal under protective atmosphere produces a clean, oxide-thin surface; vacuum anneal produces a soft matte surface; pickled finish removes the oxide layer entirely for medical and welding applications.
- 05
NDT and continuity check
100 percent visual and eddy-current continuity test on medical-grade wire. Spring and aerospace wire is class-tested per spec; welding wire is lot-tested for chemistry, surface contamination, and cast-helix.
- 06
Winding, packaging, MTR
Wire is wound on customer-specified spools or in coils, vacuum-sealed for medical and AM grades, and accompanied by an EN 10204 3.1 MTR with chemistry and mechanical data traceable to the originating heat.
Operating Boundaries
Operating Boundaries and Failure Modes
Three service-environment boundaries that drive alloy selection, surface finish, and process planning. Confirm these constraints at the RFQ stage.
Spring-back in elastic applications
CP titanium wire has a lower modulus than steel (about 105 GPa vs 200 GPa for spring steel), so spring designs need additional active coils to match steel-spring force. Grade 5 and Grade 9 give higher strength and slightly higher modulus for fatigue-critical spring service.
Surface contamination in welding and biomedical use
Bright and pickled wire is the only acceptable surface for TIG and plasma-arc welding feed and medical device forming. Oxide-dark annealed wire must be pickled or mechanically cleaned before weld use, otherwise oxygen and nitrogen pickup embrittle the weld.
Diameter tolerance and cast-helix limits
For springs and formed clips, the cast-helix (residual curvature on the spool) must remain under 25 mm per meter; for fine welding wire below 0.8 mm, ovality is held to within 0.005 mm. Confirm tolerance class at the RFQ.
AS9100D
Aerospace Quality Management System
ISO 9001:2015
Certified Quality Management System
Medical Device Quality Standard
MTR Traceability
Material Test Reports with Every Shipment
Quality
Uncompromising Quality Control
Every titanium part is verified, documented, and traceable before it leaves our Baoji facility โ because in aerospace and medical manufacturing, documentation is just as critical as the cut itself.
CMM Inspection
Coordinate Measuring Machines verify every critical dimension against GD&T to ยฑ0.005 mm before any part ships.
FAIR Reports
Project-specific First Article Inspection Reports delivered for every new part number โ engineered for fast PPAP / FAIR approval.
Material Traceability
Material Test Reports (mill certificates) accompany every shipment for full source-to-component traceability.
Procurement and Lead Time
Supply Chain and Lead-Time Windows
Stock availability, MOQ flexibility, and lead-time windows for titanium wire. Final lead time is confirmed at the RFQ stage against the current upstream-mill schedule.
Capacity envelope
Drawing capacity in the 0.10-6.0 mm diameter range. Sample spools down to 1-5 kg are feasible for engineering trials; production runs of several hundred kilograms per spool are standard. AWS-class welding wire and medical-grade wire are scheduled against upstream rod campaigns.
Stock and MOQ flexibility
Standard stocked grade and diameter combinations have no minimum order quantity for engineering sampling. Non-stock diameter, custom surface finish, and small-lot medical-grade wire are scheduled against upstream-mill batches; MOQ is determined by the mill campaign and confirmed at the RFQ stage.
Lead-time windows
Standard stocked wire items ship in 5-7 days. Non-standard alloy, fine medical-grade draws, and AM-grade feedstock run 4-6 weeks, driven by upstream-rod heat and drawing campaign. Engineering review and final quotation timing is confirmed at the RFQ stage.
Dimensional Comparison
Titanium Wire vs. Stainless Steel and Nitinol
Four procurement-relevant dimensions comparing titanium wire (Gr.5 reference) against the conventional austenitic stainless and Nitinol alternatives in spring, forming, and biomedical service.
| Dimension | Titanium Wire (Gr.5) | Austenitic SS (302 / 316LVM) | Nitinol (Ni-Ti) |
|---|---|---|---|
| Specific strength (UTS / density) | Up to 260 kNm/kg (Gr.5) | Up to 180 kNm/kg (annealed 302 SS) | Up to 200 kNm/kg (Niti superelastic) |
| Density and mass | 4.51 g/cm3 (about 44 percent lighter than steel) | 7.93 g/cm3 (reference austenitic SS) | 6.45 g/cm3 (Nitinol typical) |
| Biocompatibility (ISO 10993) | Inherently biocompatible (CP and Ti-6Al-4V ELI) | Limited (Ni release restrictions) | Limited (Ni release restrictions) |
| Fatigue life vs. spring steel | Comparable to spring steel at lower force; needs more active coils to match force | Reference baseline | Inferior to steel; superelastic only |
Applications
Titanium Parts That Perform Where It Matters
From aircraft structures to surgical implants, precision titanium machining delivers the strength, bio-compatibility, and corrosion resistance that demanding industries rely on.
[Aerospace Structural Element] AERO
Aerospace Structural Elements
Brackets, fittings & frames machined from Grade 5 Ti-6Al-4V under AS9100D-controlled processes.
[Orthopedic Bone Screw] MED
Orthopedic Bone Screws
Implant-grade Grade 23 ELI (Ti-6Al-4V ELI) parts machined in cleanroom-controlled environments.
[Marine Valve Components] MAR
Marine Valve Components
Corrosion-resistant titanium valves, shafts & housings engineered for extreme offshore service.
[Motorsport Fasteners] MTR
Motorsport Fasteners
High-strength titanium bolts, studs & hardware for racing and high-performance vehicles.
Engineering and Procurement FAQ
Frequently Asked Questions
Six common buyer questions on welding-wire selection, medical handling, AM feedstock, spring-back, fine wire, and shipment documentation.
Q1 How do you select the right titanium welding wire for a given base material?
Match the weld-wire grade to the base metal: Gr.1 or Gr.2 (ERTi-1, ERTi-2) for CP titanium base; Gr.5 (ERTi-5) for Ti-6Al-4V base; Gr.9 (ERTi-9) for Ti-3Al-2.5V base. Bright or pickled finish is mandatory to avoid oxygen and nitrogen pickup. AWS A5.16 classification is supplied on the spool label and the 3.1 MTR.
Q2 How is medical-grade wire handled differently from industrial wire?
Medical wire is drawn in a clean-room environment with white-gown handling, vacuum-sealed in medical-grade pouches, and shipped with lot-traceable EN 10204 3.1 MTR plus biocompatibility documentation where the order spec calls for it. We are a material supplier and processor; downstream device-level certification remains the device maker responsibility.
Q3 What is the typical surface finish for AM wire feedstock?
AM wire is supplied bright-clean, with the surface oxide mechanically removed and the wire lubricated for stable feeding through the AM deposition head. Pickled finish is also offered for critical cleanliness. Diameter tolerance is held to plus or minus 0.02 mm and ovality under 0.005 mm for stable feed rates.
Q4 How is spring-back controlled when forming titanium wire into springs or clips?
Spring-back is about 2-3 times higher than for steel at the same diameter because of the lower modulus. We use stress-relief anneal after rough forming and age or straightening after final forming to lock in geometry. Closed-loop CNC spring coiling with force-feedback and post-form measurement is the standard process for high-volume spring orders.
Q5 Can titanium wire be drawn below 0.1 mm?
Industrial-class titanium wire is drawn down to about 0.05 mm for specialty applications such as braided catheter reinforcement and micro-spring. Below 0.05 mm the wire is classed as filament and requires different production routes. Confirm the diameter range and tolerance class at the RFQ stage.
Q6 What documentation is supplied with each wire shipment?
EN 10204 3.1 mill test report (chemistry, tensile, elongation), surface-finish declaration, AWS A5.16 classification for welding wire, and ASTM F67 or F136 traceability for medical wire. Independent third-party witness tests by Lloyds, Bureau Veritas, DNV, or customer-appointed agencies are welcomed and arranged at the RFQ stage.
About Boze Titanium Manufacturing Center
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium โ from raw material to precision engineering. AS9100D, & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.
Certifications verified by ASTM International titanium material specifications (B265, B348, B381, F136, F2924) with full EN 10204 3.1 mill test certification. Our quality system is operated under AS9100D by Baoji Boze Metal Products Co., Ltd.
AS9100D ISO 9001 500+ Clients 15+ Years OEM/ODM