Direct from Velnora's precision manufacturing facility in Baoji, explore our high-demand OEM/ODM titanium alloy assemblies, EDC components, and specialized fasteners built for severe mechanical environments.
As the international manufacturing landscape pivots toward ultra-luxury bespoke EDC equipment, precision horology, architectural art installations, and performance hardware, Timascus round bars (often commercially designated as Mokuti or Damascus Titanium) have evolved from an artisanal metallurgical curiosity into a standard-engineered billet form. Engineered through high-vacuum solid-state diffusion bonding, Timascus bar stock integrates alternating lamellar matrices of unalloyed Commercially Pure Titanium (predominantly ASTM Grade 2) and Alpha-Beta structural Titanium alloy (ASTM B348 Grade 5 / Ti-6Al-4V / TC4). The resulting composite material preserves the extraordinary physical attributes of titanium—low density (4.43–4.51 g/cm³), imperviousness to chloride-induced pitting, and biocompatibility—while exhibiting a distinctive, multi-hued topographical grain when heat treated or electrochemically anodized.
Unlike roll-bonded bimetals or explosive-welded plates that exhibit pronounced shear planes and intermetallic embrittlement, premium Timascus round bars are synthesized via Hot Isostatic Pressing (HIP) in high vacuum environments exceeding 10⁻⁴ Torr at temperatures hovering around 900°C to 950°C. Under isobaric pressures between 100 to 150 MPa, titanium atoms cross the lamellar boundary zones through inter-diffusion without reaching liquidus phases, precluding the formation of brittle intermetallic crystals and achieving a joint shear strength equivalent to bulk Grade 5 base metal.
To produce a Timascus round bar that is both structurally sound and capable of high-contrast optical refraction, strict chemical compatibility must be maintained across alternating layers. The primary OEM/ODM pairings manufactured at our Baoji facility include:
| Alloy Layer Type | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Key Anodizing Voltage (Color Output) | Thermal Oxidation Character |
|---|---|---|---|---|---|
| CP Titanium Gr2 (Alpha) | ≥ 275 - 350 | ≥ 450 | ≥ 20% | 18V (Bronze) / 25V (Purple) / 72V (Teal) | Rapid growth; transitions into sky blues & teals |
| Ti-6Al-4V Gr5 (Alpha-Beta) | ≥ 828 - 910 | ≥ 895 - 1000 | ≥ 10% | 30V (Deep Blue) / 58V (Gold) / 85V (Green) | High heat resistance; forms radiant golds & purples |
| Diffusion Bond Interface | ≥ 750 (Shear) | ≥ 880 (Interlaminar) | ≥ 12% | Continuous refractive gradient band | Non-delaminating seamless metallurgical transition |
| Zirconium Zr702 (Optional) | ≥ 205 | ≥ 380 | ≥ 16% | Non-reactive in standard Ti baths | Oxidizes into hard, mirror-like black ZrO₂ |
Converting flat stacked sheets into round, cylindrical bars without causing shear failure or laminar separation represents one of the most demanding challenges in titanium metalworking. Flat plates exhibit uniform horizontal layers; however, turning a solid round bar from such a block leaves plain stripes running along the length. To manifest complex 3D patterns—such as Twist, Raindrop, Basketweave, Herringbone, and Topographic Contour—the bonded billets must undergo complex multi-axis thermomechanical processing:
Solid forged square billets are brought to 880°C within an argon-purged furnace and subjected to controlled torsional twisting (ranging from 120° to 360° per linear foot). This spiralizes the internal lamellae, so when the outer shell is turned on a lathe, internal spiral ribbons are exposed.
Following pattern dislocation, the billets are radially swaged or rotary hammer-forged down to circular cross-sections (diameters ∅8mm through ∅100mm). This reduces the core grain size, refines microstructural boundaries, and aligns grain flow along the bar axis.
To eliminate forging scale, alpha-case surface embrittlement, and micro-cracks, all Timascus round bars are centerless ground to precise diametrical tolerances (ISO h7 to h9). This ensures smooth feed performance in high-speed CNC Swiss-turning automatic bar loaders.
The global procurement market for pattern-welded specialty alloys is experiencing a structural paradigm shift. Traditionally driven by individual artisan knifemakers buying small flat billets, commercial demand is now dominated by enterprise-level OEM/ODM brands across watchmaking, consumer electronics, performance motorsport styling, and luxury lifestyle accessories. Procurement managers must position their supply chains to accommodate three distinct industry transformations:
High-end device designers are replacing standard titanium parts with Timascus components—such as tactical pen mechanisms, flashlight bodies, camera control rings, and mechanical keyboard artisans. To turn these parts cost-effectively, CNC workshops rely on automatic bar-fed lathes that require straight, round bar stock. Irregular, hand-forged round bars with diameter variance or camber cause continuous machine jams and tool breakage. Demand for cold-drawn, centerless ground Timascus bars with an outer diameter tolerance of h7 / h8 and straightness deviations ≤ 0.5 mm per meter is growing at over 28% year-over-year.
Historical reliance on garage-forge fabricators frequently resulted in latent internal delamination—tiny laminar separations that stay hidden until a machinist has invested hours of cycle time into milling a part. Tier-1 enterprise buyers now mandate 100% Ultrasonic Testing (UT according to ASTM E114 / AMS 2631 standards) to guarantee zero internal voids prior to international export. Mill Test Reports (MTR 3.1) detailing chemical heat lot verification of every alloy constituent are now an essential baseline for global import customs.
While traditional thermal flame oxidation with butane or oxy-acetylene torches offers vivid colors, it is vulnerable to operator error and creates variable, non-repeatable color patterns across volume runs. Sourcing trends favor high-precision CNC anodizing setups running computer-controlled DC power supplies and specialized eco-friendly electrolytes (such as citric and phosphoric acid formulations), followed by clear diamond-like carbon (DLC) or physical vapor deposition (PVD) protective clear-coats to enhance scratch and skin-oil wear resistance.
Machining Timascus round bars introduces distinct engineering considerations due to the alternating alloy composition. Because cutting tools pass continuously between ductile CP Grade 2 and abrasive Grade 5 titanium, machinists must account for varying shear resistance and avoid intermittent tool chatter. The following machining and finishing parameters are recommended:
At Velnora Titanium Industry Co., Ltd. in Baoji, Shaanxi, our ISO-compliant manufacturing cycle pairs high-vacuum metallurgic bonding with modern CNC bar-grinding equipment:
Certified ASTM B265 Grade 2 and Grade 5 titanium sheets are precision cut, mechanically planed, chemically pickled to eliminate the passive TiO₂ layer, and stacked in alternating sequence inside a cleanroom.
Stacked billets are placed within an engineered steel canister, evacuated to high vacuum (10⁻⁴ Torr), baked to eliminate volatile impurities, and hermetically sealed via automated electron-beam welding.
Canisters undergo Hot Isostatic Pressing at 920°C and 140 MPa for 4 to 6 hours. Equal isobaric pressure from all sides guarantees full, void-free atomic diffusion across every alloy layer.
De-canned composite billets are reheated and forged into square profiles, twisted under synchronized digital servo controls to align pattern densities, and rotary hot-forged back into cylinders.
Round bars undergo inert argon vacuum annealing at 650°C for 2 hours to eliminate internal shear stresses created during torsional working, preventing deformation during customer CNC machining.
Every bar is centerless ground to target diameter tolerances (h7/h8), polished, and scanned via multi-channel ultrasonic immersion testing to verify complete, uninterrupted solid-state bonds.
Strategically headquartered in Baoji, Shaanxi—widely recognized as China's "Titanium Valley"—Velnora Titanium Industry Co., Ltd. has specialized in precision titanium fasteners, CNC parts, and Timascus materials since 2013. Sourcing your OEM/ODM Timascus round bars and CNC assemblies from our facility delivers distinct commercial advantages:
Request dimensional tolerances, metallurgical certification, and current stock lists for our Timascus round bars and custom CNC fastener programs. Our engineering team responds within 4 business hours.