Precision-machined from certified Grade 5 (Ti-6Al-4V) aerospace bar stock. Engineered specifically to replace standard 8.8 and 10.9 structural steel fasteners in hypercar hubs, superbike calipers, and lightweight marine hulls across the Greater Incheon industrial basin.
When selecting hardware for competitive racing in high-performance automotive platforms, track-tuned superbikes, and coastal marine vessels, mechanical failure is not an option. Standard automotive bolts constructed from low-carbon steel or unverified 304/316 stainless alloys consistently fail under cyclic fatigue, thermal creep, and halide-induced stress corrosion cracking (SCC).
At Zunvo Titanium Products Co., Ltd., our manufacturing protocol utilizes exclusively vacuum-melted Grade 5 Titanium (Ti-6Al-4V, Werkstoff 3.7165, UNS R56400) bar stock originating directly from certified mills in Baoji, China's internationally recognized "Titanium Valley". This alpha-beta dual-phase alloy provides a modulus of elasticity of approximately 114 GPa—almost half that of structural steel (210 GPa)—granting exceptional kinetic shock absorption and elasticity without permanent plastic deformation.
| Mechanical / Chemical Property | Zunvo Gr5 Ti-6Al-4V (Aerospace) | Class 10.9 Structural Steel | A2-70 / 304 Stainless | 7075-T6 Billet Aluminum |
|---|---|---|---|---|
| Density (ρ) | 4.43 g/cm³ (-44% vs Steel) | 7.85 g/cm³ | 7.93 g/cm³ | 2.81 g/cm³ |
| Tensile Strength (Ultimate, Rm) | ≥ 950 - 1050 MPa | 1040 MPa | 700 MPa | 570 MPa |
| Yield Strength (Rp0.2) | ≥ 880 - 920 MPa | 940 MPa | 450 MPa | 505 MPa |
| Specific Strength (Strength/Weight) | 214 kN·m/kg (Class-Leading) | 132 kN·m/kg | 88 kN·m/kg | 202 kN·m/kg |
| Thread Manufacturing Process | Continuous Warm CNC Thread-Rolling | Cold Forged / Cut | Cold Formed | Machined / Cut Threads |
| Marine Atmospheric Salt Spray (ASTM B117) | > 3,000 hrs (Zero Pitting) | < 72 hrs (Rusts rapidly) | < 500 hrs (Pitting onset) | < 250 hrs (Galvanic white rust) |
| Modulus of Elasticity (Young's E) | 114 GPa (Shock Dampening) | 210 GPa (Rigid/Brittle) | 193 GPa | 71 GPa (Shears under torque) |
A critical engineering differentiator that sets Zunvo apart from standard machine shops is our commitment to multi-axis cold-die thread rolling. Machining threads with a cutting tool cuts across the internal crystalline grain flow of the titanium alloy, leaving micro-notches that act as local stress concentration points. Under the brutal pulsating shear forces of Incheon circuit braking and high-RPM engine harmonics, cut threads propagate fatigue cracks rapidly.
By contrast, Zunvo applies precision hydraulic radial rolling dies that plastically burnish the external titanium fibers into the root and crest of the thread profile. This preserves continuous grain flow along the thread flank, introduces compressive surface residual stress, and boosts fatigue endurance life by more than 300% over standard cut fasteners.
To eliminate thread galling and seizure under demanding dry-torque track conditions, Zunvo implements specialized secondary surface treatments. Our Physical Vapor Deposition (PVD) process bonds titanium nitride (TiN), titanium carbonitride (TiCN), or diamond-like carbon (DLC) coatings at temperatures between 400°C and 500°C under high-vacuum plasma chambers.
This yields a micro-hardness exceeding 2,500 HV with an ultra-low friction coefficient (μ ≈ 0.15), completely bypassing the galling tendencies historically associated with raw titanium fasteners. Meanwhile, our voltage-controlled electrochemical anodization produces iridescent optical interference colors (burnt rainbow, electric blue, imperial gold, stealth violet) that never flake, blister, or peel like organic powder coats.
Incheon represents South Korea's maritime, aviation, and advanced logistics gateway. As the anchor of the Incheon Free Economic Zone (IFEZ) and proximate to major Korean racing facilities, our Grade 5 titanium bolts resolve distinct localized operational challenges.
Within the Songdo International High-Tech R&D cluster, automotive engineers are pioneering ultra-lightweight electric sports coupe and prototype EV chassis modifications. Because battery packs add tremendous curb weight, lowering un-sprung rotational mass across wheel hubs, brake disc hats, suspension uprights, and steering linkages is essential to preserve turn-in agility. Zunvo titanium fasteners deliver immediate weight savings of up to 45% per corner without sacrificing structural yield strength.
Operating around the Port of Incheon, Yeongjong Island, and the coastal waters of the Yellow Sea exposes hardware to high concentrations of sodium chloride aerosol and industrial marine humidity. Standard alloy steel fasteners rust within days, and 304 stainless steel suffers chloride pitting and thread seizure. Zunvo Gr5 titanium forms an instantaneous, passive titanium dioxide (TiO2) ceramic oxide barrier, maintaining 100% structural integrity under aggressive sea spray conditions.
Incheon is home to premier motorcycle tuning workshops servicing teams competing at Everland Speedway (Yongin) and Inje Speedium. For 600cc and 1000cc superbikes, rotor bolts and radial brake caliper mounts endure massive shear loads during hard decelerations. Our GRX M8×24 and M10 brake bolts, featuring wire-locking safety drill holes and rolled metric threads, prevent critical track-side fastener detachment under thermal loads up to 450°C.
The South Korean performance tuning and racing components landscape is undergoing a structural paradigm shift. Several macro-level developments are elevating the demand for high-end titanium fasteners sourced directly from certified Baoji manufacturers:
South Korean B2B distributors and motorsport modification studios are shifting away from unbranded trading companies. The market demands full raw material transparency, necessitating EN 10204 3.1 Mill Test Certificates (MTC) documenting chemical spectrometry (Al 5.5–6.75%, V 3.5–4.5%, Fe ≤ 0.40%, O ≤ 0.20%) and batch-specific tensile testing. Zunvo provides complete heat number traceability with every commercial invoice entering Incheon Customs.
With Incheon International Airport (ICN) serving as Northeast Asia's premier cargo hub, Korean engineering teams operate on lean inventories. Our standardized racing bolts (DIN912, flanged hex, Torx brake bolts) ship from Baoji directly to Incheon within 24–48 hours, clearing customs through pre-filed trade declarations and delivering door-to-door to workshops in Songdo, Bupyeong, or Namdong within 3 to 5 business days.
Combining over a decade of titanium fabrication mastery with aerospace-grade precision equipment, Zunvo delivers the engineering rigor and supply security required by professional racing entities.
Established in 2015 in Baoji, Shaanxi, China. We operate directly adjacent to world-class titanium smelters, guaranteeing priority sourcing of grade-verified titanium ingots and billets with zero intermediate markups.
Our 1,000–3,000 m² production facility houses advanced multi-axis Swiss-type turning centers, high-tonnage warm heading presses, and specialized optical image screening machines for micron-level tolerance compliance.
Send us your 2D CAD prints (.DWG, .DXF) or 3D models (.STEP, .IGES). Our technical engineering department completes manufacturability analysis within 24 hours and delivers functional CNC prototypes in just 3 days.
Every batch undergoes rigorous quality assurance: thread ring go/no-go gauges, CMM dimensional auditing, torque-to-yield destructive sampling, and microscopic surface defect screening prior to packaging.
With an average response time of ≤ 7 hours and a 66% buyer reorder rate, we serve premier B2B motorsport racing brands, custom motorcycle builders, and industrial automation clients across the globe.
Streamlined export operations with specialized door-to-door express delivery (DHL/FedEx/SF Express) into Incheon International Airport and consolidated LCL/FCL ocean freight into Incheon Port Container Terminals.
Essential technical and commercial information for Korean procurement managers, race engineers, and workshop distributors.
