Superelastic
Nickel Titanium Alloy Super Elastic & Nitinol Bar
- Alloy: NiTi / Nitinol 55/45
- Transformation Temp: -10°C to 100°C
- Surface: Black / Polished / Pickled
Engineered Metallurgy Showcase
Featured Titanium & Special Alloy Components
Explore our core precision-machined bar stock, superelastic memory rods, petrochemical flanges, and high-performance automotive hardware manufactured in Baoji, China.
Plating Grade
Anodizing Gr2 Titanium Shaft with Copper Hook
- Material: ASTM B348 Gr2 + Cu
- Application: Electroplating Anodizing
- Conductivity: High Current Efficiency
ASTM B363
Ti-Pure Seamless Concentric Reducer Fitting
- Standard: ASME B16.9 / ASTM B363
- Grade: Gr1, Gr2, WPT2
- Process: Cold Formed Seamless
Sport & Leisure
Thin Titanium Rods & Bars for Precision Gear
- Standard: ASTM B348 Gr5 / NiTi
- Diameter: 0.8mm to 8.0mm
- Feature: High Flexibility & Memory
ANSI 150# / 300#
Titanium Blind Flange 4" ANSI Class Gr2
- Specification: ASME B16.5 Blind (BL)
- Forging: ASTM B381 F2 / Gr2
- Surface: RF Concentric Serrated
Motorsport
M8-M12 Gr5 Titanium Exhaust Stud Bolt Sets
- Grade: Ti-6Al-4V Grade 5
- Tensile: ≥ 950 MPa (Thread Rolled)
- Finish: Burnt Blue / Polished
In Stock
Gr2 / Gr5 Ti-6Al-4V Polished Thin Sheet & Plate
- Standard: ASTM B265 / AMS 4911
- Thickness: 1.0mm - 25.4mm
- Tolerance: ISO Class H7 to H11
Chemical Process
Gr2 Titanium Anode Mesh Basket for Plating
- Material: Commercial Pure Gr2 Ti
- Mesh Opening: 5x10mm / 6x12mm
- Durability: High Acid Corrosion Proof
2006
Established in Baoji Valley
19+
Years International Export
100T
Annual Mill Production
100%
MTC EN 10204 3.1 Certified
Engineering Whitepaper · Material Selection
Industrial Metallurgy & Structural Grading of Titanium Round Bars
As modern engineering pushes structural components toward extreme operating envelopes, the procurement of titanium round bars has transitioned from a straightforward commodity purchase to a stringent metallurgical compliance process. Titanium bars manufactured in China, particularly within the world-renowned Baoji titanium industrial cluster, supply over 65% of the globe's titanium sponge-to-mill product inventory. However, matching industrial requirements with exact alloy microstructures determines whether a downhole drilling sub, an aerospace fastener, or a chemical reactor shaft meets its calculated fatigue lifecycle.
Industrial titanium round bars are governed primarily by international specifications including ASTM B348 (general engineering, chemical, and industrial bar stock), AMS 4928 / AMS 6931 (aerospace structural forgings and bars requiring vacuum arc remelting), ASTM F136 / F67 (surgical implant grades requiring strict biocompatibility and interstitial purity limits), and ASME SB348 (Boiler and Pressure Vessel Code compliance). Understanding the physical mechanisms across commercially pure (CP) grades and alpha-beta (α-β) dual-phase alloys is essential for global procurement engineers.
"Material integrity begins at the melting crucible. Commercially viable titanium bars must undergo double or triple Vacuum Arc Remelting (VAR) or Electron Beam Cold Hearth Melting (EBCHM) to eradicate High-Density Inclusions (HDI) and Low-Density Inclusions (LDI), preserving rotational fatigue resistance under cyclic multi-axial shear."
Standardized Titanium Bar Classifications & Microstructural Attributes
Titanium bars vary significantly in grain orientation, cold shear resistance, and fracture toughness based on their alloying elements:
| Alloy Grade | UNS / Standard | Nominal Chemistry | Tensile (min. MPa) | Yield (0.2%, MPa) | Primary Industrial Applications |
|---|---|---|---|---|---|
| Grade 1 | UNS R50250 / ASTM B348 | CP Ti, Low Interstitial O≤0.18% | 240 | 170 | Deep drawn chemical equipment, plate heat exchangers, explosive cladding |
| Grade 2 | UNS R50400 / ASTM B348 | CP Ti, Standard O≤0.25% | 345 | 275 | Petrochemical shafts, marine hardware, anodizing racks, electroplating tanks |
| Grade 5 | UNS R56400 / Ti-6Al-4V | 6% Al, 4% V, Balance Ti | 895 | 828 | Motorsport wheel bolts, aerospace landing gears, CNC precision turbine hubs |
| Grade 5 ELI | UNS R56401 / ASTM F136 | Ti-6Al-4V Extra Low Interstitial | 860 | 790 | Orthopedic surgical implants, cryogenic liquid storage systems, aerospace fittings |
| Grade 7 | UNS R52400 / ASTM B348 | CP Ti + 0.12-0.25% Palladium (Pd) | 345 | 275 | Severe hydrochloric/sulfuric acid autoclaves, sour gas downhole valves |
| Grade 9 | UNS R56320 / Ti-3Al-2.5V | 3% Al, 2.5% V | 620 | 483 | High-pressure hydraulic lines, cycling sports gear, offshore umbilical tubing |
| Grade 12 | UNS R53400 / ASTM B348 | 0.3% Mo, 0.8% Ni, Balance Ti | 483 | 345 | High-temperature brine processing, marine propulsion shafts, nitric acid piping |
The Jovzi Manufacturing Moat
Why Global Tier-1 Buyers Source From Jovzi Titanium
Founded in 2006 in Baoji (Shaanxi, China), Jovzi Titanium combines nineteen years of metallurgical forging, high-precision multi-axis CNC machining, and comprehensive international testing infrastructure.
Epicenter of Titanium Valley
Operating inside Baoji allows Jovzi immediate mill access to prime 0-grade sponge titanium, eliminating multi-tier supply broker markups and ensuring short billet production lead times.
BaoTi Certified Lab Reports
Beyond internal ISO 9001 quality gates, every batch is verified by the nationally accredited BaoTi Test Center, delivering verifiable EN 10204 3.1 Mill Test Certificates with full heat-number traceability.
Senior Engineering Rigor
Staffed by 4 senior and 5 intermediate metallurgical engineers, we perform ultrasonic flaw detection (AMS 2631 Class A/AA) to eliminate internal voids, inclusions, and centerline shrinkage.
Global Turnkey Logistics
Supplying North America, the EU, and Southeast Asia under FOB, CIF, DDP, and door-to-door express terms. Heavy wooden box packaging with internal anti-scratch sleeves shields ground round bar finishes.
Radial Forging & Centerless Grinding
Equipped with high-speed precision centerless grinding and peeling units, achieving h7, h8, and h9 dimensional diameter tolerances on bars up to 350mm diameter, guaranteeing runout accuracy under 0.05mm per meter.
Thread Rolling & Thermal Processing
For fastener and stud manufacturing, Jovzi employs hot/cold post-heat-treatment thread rolling rather than chip cutting. This continuous grain boundary flow enhances cyclic fatigue threshold by 35% compared to cut threads.
Strict Alpha-Case Layer Removal
Every hot-forged and solution-treated titanium round bar undergoes chemical pickling and mechanical peeling to strip brittle alpha-case oxygen-enriched surfaces, preventing stress-corrosion micro-cracks under tensile loads.
Strategic Procurement Forecast 2025–2035
Emerging Market Dynamics in Titanium Round Bar Sourcing
Procurement leaders are balancing cost competitiveness with ESG compliance, dual-source de-risking, and rapid shifts toward titanium metal-powder conversion for additive manufacturing.
Trend Horizon 2025–2027
Green Sponge Production & Decarbonization
Chinese smelters are actively retrofitting closed-loop Kroll reduction cycles using solar and hydroelectric power in Western China, drastically reducing Scope 1 & Scope 2 carbon footprints per metric ton of titanium sponge to satisfy EU Carbon Border Adjustment Mechanism (CBAM) requirements.
Trend Horizon 2026–2030
Additive Feedstock Demand Surge
The expansion of Electron Beam Melting (EBM) and Plasma Atomization (PA) for 3D printed aerospace brackets requires ultra-pure Gr5 ELI and Grade 23 round bars as wire and electrode stock. Tight gas porosity standards are transforming titanium bar mills into feedstock providers for aerospace AM systems.
Trend Horizon 2028–2035
Near-Net-Shape Forging Convergence
With titanium raw material representing a significant percentage of finished part cost, global aerospace and automotive buyers are moving away from traditional billet hog-outs. Mills offering calibrated pre-cut cylindrical blanks and stepped forged round bars save up to 40% in scrap generation.
Additionally, geopolitical supply realignment has emphasized the unmatched economies of scale found in Chinese titanium supply chains. While European and US OEMs explore secondary ingot melting, the sheer production output of Baoji's titanium mills provides resilient lead times that Western sponge production lines cannot match. Smart international buyers are increasingly utilizing consignment stocking programs, third-party lab inspection protocols (such as SGS, TÜV, and BaoTi), and currency diversification to secure multi-quarter pricing stability against raw mineral volatility.
Metallurgical Advancements
Microstructural Control: Modern Development in Titanium Forging
The global demand for high-strength, low-density materials has driven significant technological innovation in the thermomechanical processing (TMP) of titanium round bars. In historical manufacturing, coarse Widmanstätten microstructures were commonplace in large-diameter billets, often leading to anisotropic mechanical performance and poor ultrasonic penetrability. Modern continuous-monitoring four-quadrant radial forge systems have redefined grain morphology.
1. Electron Beam Cold Hearth Melting (EBCHM) Integration
Traditional double VAR melting involves high thermal gradients that can inadvertently entrain tungsten electrode particles or under-melt low-density titanium nitride sponges. Chinese industrial mills have increasingly deployed high-power EBCHM furnaces. EBCHM allows molten titanium to dwell within a water-cooled copper hearth where low-density inclusions dissolve and high-density contaminants sink, resulting in exceptionally clean billets specifically suited for ASTM F136 medical and critical rotating jet-engine discs.
2. Fine Equiaxed Alpha-Beta Processing (α+β)
Through precise thermomechanical deformation conducted just below the β-transus temperature (typically 995°C ± 10°C for Ti-6Al-4V), followed by rapid water quenching or controlled fan cooling, Jovzi engineers achieve homogeneous equiaxed microstructures with grain sizes consistently meeting ASTM E112 Grade 8 or finer. This structural refinement significantly enhances high-cycle fatigue resistance (>10^7 cycles at 550 MPa) and provides uniform sonic transparency under high-frequency NDT probing.
3. Near-Beta and Super-Alpha Formulations
Beyond standard Gr5 (Ti-6Al-4V), next-generation round bar development emphasizes titanium alloys capable of continuous operation up to 600°C without severe superficial oxidation. Alloys such as Ti-6242 (Ti-6Al-2Sn-4Zr-2Mo-0.1Si) and Ti-10-2-3 (Ti-10V-2Fe-3Al) are being adopted for specialized applications, delivering outstanding fracture toughness and elevated creep strength for compressor disc shafts, offshore riser components, and high-performance racing valve trains.
Quality Assurance Protocol
Titanium Round Bar Factory Inspection & Audit Checklist
Ensure structural compliance and eliminate costly machining downtime by verifying critical quality parameters prior to dispatch.
Chemical Ingot Heat Certificate
Verify that interstitial elements (H, O, N, C, Fe) are reported per individual heat, with Hydrogen strictly restricted below 0.0125% to prevent embrittlement.
Ultrasonic Testing (UT) Calibration
Demand AMS 2631 Class A or ASTM B348 ultrasonic flaw detection with reference standard FBH (Flat Bottom Hole) calibrations to ensure zero internal voids.
Zero Surface Alpha-Case Layer
Confirm mechanical ground or peeled surface finishes have zero hard oxygen diffusion layers via metallographic cross-section inspection at 100x magnification.
Dimensional Roundness & Straightness
Specify dial-indicator runout tolerances; industrial round bars must guarantee straightness within ≤1.0mm per 1000mm length to avoid high-speed CNC spindle vibration.
Mechanical Property Verification
Validate both longitudinal and transverse test bars for tensile strength, 0.2% proof yield, elongation (≥10% for Gr5), and reduction of area (≥25%).
Full Physical Traceability Markings
Every bar must feature laser etched or steel die stamped heat numbers, alloy designations, and mill logos matched directly to the verified EN 10204 3.1 MTC.
Procurement Intelligence
Frequently Asked Questions for Titanium Round Bar Importers
Direct, technically detailed answers covering lead times, machining parameters, minimum order quantities, and international logistics.
What is the typical lead time and MOQ for custom-diameter titanium bars from Jovzi?
For standard inventory stock (diameters ranging from 6.0mm to 120mm in Gr1, Gr2, and Gr5), materials can be packaged and cleared for export within 3 to 5 business days. The minimum order quantity (MOQ) for stock items is as low as 1 kg or 1 full piece for prototypes. For custom diameters, non-standard lengths, or special alloys (such as Grade 7 Ti-Pd, Grade 12, or Grade 23 ELI) requiring dedicated ingot forging and peeling, production lead times average 15 to 25 business days, with MOQs typically starting at 50 kg to 200 kg depending on billet dimensions.
How does Jovzi guarantee that Gr5 bars are free of internal voids and inclusions?
We adhere to a dual-gate quality verification system. First, all ingots undergo vacuum arc remelting (VAR) twice or three times to eliminate density-differential inclusions. Second, post-forging bars are 100% evaluated via non-destructive immersion or contact ultrasonic testing in strict compliance with AMS 2631 Class A or ASTM B348 standards. Any section exhibiting acoustic attenuation anomalies or indication echoes exceeding the calibration flat-bottom hole limit is segregated and discarded prior to final centerless grinding.
What are the optimal speeds, feeds, and tooling recommendations for machining Gr5 round bars?
Due to titanium's low thermal conductivity (approx. 6.7 W/m·K for Gr5) and tendency toward work-hardening, heat concentrates at the tool-workpiece interface. We advise using solid micrograin carbide tooling with PVD TiAlN or AlTiN coatings, maintaining a high-pressure (≥70 bar) direct through-spindle coolant delivery. Utilize moderate cutting speeds (40–60 m/min for turning Gr5), high feed rates (0.12–0.22 mm/rev), and generous depth of cut to stay underneath the work-hardened surface layer. Tool dwell must be completely avoided to prevent chatter and rapid flank wear.
Can Jovzi supply authorized third-party lab testing certificates from BaoTi Test Center?
Yes. While every consignment ships with our certified ISO 9001 EN 10204 3.1 Mill Test Certificate detailing chemistry, room-temperature tensile properties, yield strength, elongation, and reduction of area, buyers may additionally request independent testing reports issued directly by the BaoTi Test Center (National Center for Quality Supervision and Testing of Nonferrous Metals). We also coordinate third-party on-site witness inspections by international verification bodies such as SGS, BV, and TÜV.
What is the metallurgical difference between ASTM B348 and AMS 4928 Grade 5 bars?
While both standards address the Ti-6Al-4V chemistry, AMS 4928 is an aerospace-specific material specification requiring significantly stricter control over melt practices, microstructural grain sizing, thermomechanical reduction ratios, and mechanical uniformity. AMS 4928 mandates tighter interstitial controls, guaranteed transverse tensile and yield testing across larger cross-sections, and documented resistance to micro-segregation. ASTM B348 is oriented toward industrial, chemical, and general commercial engineering applications where extreme cyclic flight stress limits are not mandatory.
How are export titanium bars packaged to prevent surface damage and maritime corrosion?
Ground and peeled round bars are individually wrapped with protective PE film or sleeved in protective plastic mesh netting to eliminate surface friction during transit. The bundle is then enclosed with waterproof paper and moisture-absorbing desiccant packets, positioned within robust, ISPM-15 compliant fumigated solid wooden crates lined with internal foam padding. For express and air-freight consignments, reinforced corrugated cases with heavy-duty structural straps are deployed to guarantee zero dimensional warping upon arrival.
Which international trade payment and shipment incoterms are supported?
We provide comprehensive commercial flexibility, accommodating T/T, Irrevocable Documentary L/C at sight, PayPal, and Western Union for pilot samples. In terms of freight delivery, we support FOB Shanghai/Tianjin/Qingdao, CIF global major ports, EXW factory pickup, CFR, FCA, and turnkey DDP (Delivered Duty Paid) door-to-door delivery across the United States, European Union, United Kingdom, Canada, Australia, and Japan, managing customs clearance and inland logistics seamlessly.
Does Jovzi handle secondary processing such as threading, center-drilling, and custom chamfering?
Yes. Backed by extensive multi-axis CNC lathes, precision cylindrical grinders, and thread rolling machinery in our Baoji facility, we provide value-added pre-machining services. These include custom center-hole drilling, beveling, turning down stepped tapers, keyway milling, surface anodizing (including racing blue, gold, and green passivated layers), and precise saw-cutting to tight length tolerances (±0.2mm), allowing procurement clients to feed blanks directly into their assembly lines.
Connect Directly with Jovzi Metallurgical Engineers
Whether you need certified ASTM B348 Grade 2 rods for chemical towers, high-fatigue AMS 4928 Ti-6Al-4V round bars, or custom machined titanium auto studs, our Baoji factory team provides quotes within 8 working hours.