Titanium foil and coil stock in CP Gr1 / Gr2, with Pd-stabilized Gr7 for reducing-acid service. Thickness 0.025–0.5 mm (foil) and 0.5–3.0 mm (coil), width 50–610 mm, mill-annealed or hard-rolled temper. Supplied to ASTM B265 with EN 10204 3.1 MTR; standard stock ships in 5–7 days with non-standard dimensions and alloy in 4–6 weeks.
Honest Positioning
BOZE Metal is a sourcing and processing partner for titanium foil and coil, not a primary melter. The following scope clarifications are necessary for accurate technical and commercial alignment on thin-gauge foil orders.
Sponge, VAR and EBM melting and sheet-bar production is not in our vertically integrated scope. We source sheet-bar from upstream mills; our scope is cold-rolling, annealing, slitting, surface conditioning, and quality verification.
Material specifications are applied "where applicable" per order. AS9100D governs our QMS, not every shipment classification. Confirm criticality class, specification (ASTM B265, AMS 4900), and required documentation per RFQ.
We supply foil 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.
Engineering review and quotation timelines are confirmed at the RFQ stage based on the order complexity, alloy, thickness, and downstream processing required. Standard stocked items typically receive a same-week response.
Visual inspection at production speed and eddy-current continuity on Class A foil are standard. Laser-thickness gauge records and roughness metrology are available on request. NDT and metrology scope are stated at the RFQ, not assumed by default.
Grade Library
Six procurement-grade entries mapping chemical composition, UNS designation, available foil or coil form, and typical use. Specific thickness, width, and temper are confirmed per order.
| Family | Grade / UNS | Composition | Form | Typical Use |
|---|---|---|---|---|
| CP Titanium | Grade 1UNS R50250 | Unalloyed Ti, lowest interstitial | Foil, Coil | High-formability chemical, biomedical and battery service |
| CP Titanium | Grade 2UNS R50400 | Unalloyed Ti, balanced strength | Foil, Coil | Standard CP service, sound speaker and chemical processing |
| CP Titanium | Grade 4UNS R50700 | Unalloyed Ti, highest CP strength | Foil, Coil | High-strength thin-gauge service, deep-draw formed parts |
| Corrosion-resistant | Grade 7 (Ti-Pd)UNS R52400 | CP + 0.12-0.25% Pd | Foil, Coil | Reducing-acid service, HCl electrolyzer and bipolar plate |
| Corrosion-resistant | Grade 12 (Ti-0.3Mo-0.8Ni)UNS R53400 | CP + 0.3% Mo, 0.8% Ni | Foil, Coil | Hot-brine and seawater thin-gauge service |
| Aerospace a-b | Grade 5 (Ti-6Al-4V)UNS R56400 | 6% Al, 4% V, a-b alloy | Foil, Coil | High-strength foil and spring shim, aerospace honeycomb core |
Specification Reference
Ten procurement-critical attribute, value, and standard references for titanium foil and coil. Use this as a cross-check table when drafting an RFQ; the applicable spec is selected per order.
| Attribute | Value / Range | Standard |
|---|---|---|
| Foil thickness range | 0.025 mm to 0.5 mm (0.001 inch to 0.020 inch) | ASTM B265 S3, AMS 4900 |
| Coil thickness range | 0.5 mm to 3.0 mm (0.020 inch to 0.118 inch) | ASTM B265 S3 |
| Width range | 50 mm to 610 mm (2 inch to 24 inch) | ASTM B265 S3 |
| Thickness tolerance | Plus or minus 0.005 mm on foil below 0.1 mm; plus or minus 5 percent on coil above 0.5 mm | ASTM B265 S5 |
| Surface finish | Bright mill finish, descaled, or surface-conditioned per spec | AMS 4900 |
| Temper | Mill-annealed (M) or hard-rolled (H) per spec | ASTM B265 S7 |
| Tensile strength (UTS) | Gr.2 >= 345 MPa, Gr.4 >= 550 MPa, Gr.5 >= 895 MPa | ASTM E8 |
| Elongation | Gr.2 >= 20 percent, Gr.4 >= 15 percent, Gr.5 >= 10 percent | ASTM E8 |
| Coil form | Level-wound coil, traverse-wound spool, pancake, sheet-cut | Customer specification |
| Mill certification | EN 10204 3.1 standard; 3.2 with independent witness on request | EN 10204 |
Grade 7 (Ti-Pd) foil is the default specification for chlor-alkali membrane cells, HCl electrolyzers, and reducing-acid chemical-processing service where austenitic SS would pit or fail. Bright-annealed and descaled surface is the standard; surface-conditioned roughness Ra 0.2-0.8 micrometer is available for coating adhesion on bipolar-plate applications.
Grade 2 (CP) annealed foil is supplied for battery-current-collector and cell-pack applications where corrosion resistance in electrolyte and formability for deep-draw cases are required. Grade 5 (Ti-6Al-4V) hard-rolled foil is supplied for aerospace honeycomb core and high-strength shim stock. AMS 4900 reference is standard for aerospace lots.
Additional Applications
Four additional service environments where titanium foil and coil are the default specification, with the grade and form that procurement teams typically call out.
Bipolar plate and PTL current-collector foil. Grade 1 annealed, surface-conditioned to Ra 0.4-0.8 micrometer for catalyst coating.
Spacer and demister foil for HCl and chlor-alkali towers. Grade 7 standard for reducing-acid exposure.
Speaker-diaphragm foil and precision-stamping feedstock. Gr.1 annealed for ultra-low residual stress and consistent grain size.
Current-collector foil for advanced battery and capacitor cell designs. Gr.2 annealed is the workhorse specification.
Production Workflow
From incoming sheet-bar verification through cold rolling, bright anneal, slitting, NDT, and EN 10204 3.1 MTR issuance - six controlled stages with documentation checkpoints at each handoff.
Grade-certified titanium sheet-bar is received with upstream-mill heat-lot, chemistry, and macro-etch records. Lot is verified against ASTM B265 or AMS 4900 before the rolling line starts.
Sheet-bar is reduced to foil-gauge thickness through a multi-stand cold rolling mill with intermediate vacuum anneals to restore ductility between passes. Hard-rolled temper is achieved by skipping the final anneal.
Final anneal under protective atmosphere produces a clean, oxide-thin surface suitable for downstream forming. Descaling, brushing, and polishing are added where the order requires a specific surface finish.
Foil is slit to customer-specified width (50-610 mm) and either level-wound into coils, traverse-wound onto spools, or cut to sheet length. Tension and edge-burr control are critical for downstream stamping and forming.
100 percent visual inspection at production speed; eddy-current continuity check on Class A foil; mechanical-test sample per heat for UTS, elongation, and grain size per ASTM E8 and E112.
Foil is interleaved with neutral paper or laser-cut PET film, vacuum-sealed in foil pouches for medical and AM grades, and shipped with an EN 10204 3.1 MTR with chemistry, mechanical data, and dimensional report traceable to the originating heat.
Operating Boundaries
Three service-environment boundaries that drive alloy selection, surface finish, and tolerance class. Confirm these constraints at the RFQ stage.
Foil rolling produces anisotropic mechanical properties: tensile strength is highest along the rolling direction and lower transverse. Confirm whether the downstream forming operation requires equal-biaxial or uniaxial forming, and select the temper and grain-size class accordingly.
Bright annealed and descaled surfaces are required for chemical and biomedical service. Surface oxide residue from anneal will compromise corrosion performance in reducing-acid media; specify a descaled or pickled surface for these applications.
For foil below 0.1 mm, standard mill tolerance is plus or minus 10 percent of nominal. Tight-tolerance foil (plus or minus 0.005 mm or better) is available with a tooling surcharge; confirm tolerance class at the RFQ stage.
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
Every titanium part is verified, documented, and traceable before it leaves our Baoji facility — because in aerospace and medical manufacturing, documentation is just as critical as the cut itself.
Coordinate Measuring Machines verify every critical dimension against GD&T to ±0.005 mm before any part ships.
Project-specific First Article Inspection Reports delivered for every new part number — engineered for fast PPAP / FAIR approval.
Material Test Reports (mill certificates) accompany every shipment for full source-to-component traceability.
Procurement and Lead Time
Stock availability, MOQ flexibility, and lead-time windows for titanium foil and coil. Final lead time is confirmed at the RFQ stage against the current upstream-mill schedule.
Rolling capacity in the 0.025-3.0 mm thickness range and 50-610 mm width. Engineering samples of small coil lengths are feasible; production runs of several hundred kilograms per coil are standard. Specialty alloy pulls are scheduled against upstream-mill sheet-bar batches.
Standard stocked grade and thickness combinations have no minimum order quantity for engineering sampling. Non-stock thickness, custom width, and small-lot medical or energy foils are scheduled against upstream-mill batches; MOQ is determined by the mill campaign and confirmed at the RFQ stage.
Standard stocked foil and coil items ship in 5-7 days. Non-standard alloy, custom width, and tight-tolerance foil run 4-6 weeks, driven by upstream-mill rolling campaign. Engineering review and final quotation timing is confirmed at the RFQ stage.
Dimensional Comparison
Four procurement-relevant dimensions comparing titanium foil (Gr.2 annealed reference) against the conventional austenitic stainless, nickel, and copper foil alternatives in chemical, electrolyzer, and stamping service.
| Dimension | Titanium Foil (Gr.2) | Austenitic SS (302 / 316L) | Nickel / Copper Foil |
|---|---|---|---|
| Specific strength (UTS / density) | Up to 200 kNm/kg (Gr.2 annealed) | Up to 170 kNm/kg (annealed 302 SS) | Up to 150 kNm/kg (commercially pure nickel) |
| Density and mass | 4.51 g/cm3 (about 44 percent lighter than steel) | 7.93 g/cm3 (reference austenitic SS) | 8.9 g/cm3 (commercially pure copper) |
| Corrosion in chloride media | Effectively immune to pitting and crevice corrosion in seawater and brine | Susceptible to pitting and crevice corrosion in chloride media | Susceptible to ammonia and sulfide attack |
| Formability at thin gauge | Good at 0.025-0.1 mm annealed; deep-draw and stamping on Gr.1 / Gr.2 | Work-hardens rapidly; spring-back concerns | Softer but limited corrosion in chloride media |
Applications
From aircraft structures to surgical implants, precision titanium machining delivers the strength, bio-compatibility, and corrosion resistance that demanding industries rely on.
Brackets, fittings & frames machined from Grade 5 Ti-6Al-4V under AS9100D-controlled processes.
Implant-grade Grade 23 ELI (Ti-6Al-4V ELI) parts machined in cleanroom-controlled environments.
Corrosion-resistant titanium valves, shafts & housings engineered for extreme offshore service.
High-strength titanium bolts, studs & hardware for racing and high-performance vehicles.
Engineering and Procurement FAQ
Six common buyer questions on grade selection for chemical and energy service, thickness tolerance, surface finish for electrolyzer, grain structure, sheet-cut formats, and shipment documentation.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — 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.