Gr5 Titanium
High-Precision Catalog
Certified Titanium Drilled & Flanged Fasteners
Manufactured from Baoji-certified titanium billet. Every item features cold-rolled threads, precision-drilled lockwire channels, and comprehensive metallurgical traceability for demanding Salvadoran engineering applications.
Industrial Grade
Motorsport Special
Lightweight Core
Safety Wire Ready
Color Anodized
CNC Custom Billet
Aero UNF/Metric
≥ 895 MPa
Tensile Strength (Gr5 Ti-6Al-4V)
4.43 g/cm³
44% Weight Reduction vs Steel
±0.005 mm
5-Axis CNC Precision Tolerance
100% Traceable
EN 10204 3.1 Mill Heat Certificates
Engineering White Paper: Metallurgical Superiority of Drilled Titanium Fasteners
In modern structural engineering and high-performance mechanical assembly, mechanical failure at fasteners accounts for more than 65% of catastrophic joint collapses under cyclic vibration. For specialized procurement officers, mechanical engineers, and racing teams operating within the San Salvador metropolitan area, standard commercial carbon steel or austenitic stainless steel (such as AISI 304 or 316) fasteners present a continuous operational liability. Fasteners subjected to violent resonance, continuous harmonic vibration, and aggressive corrosive environments experience cyclic fatigue failure and hydrogen embrittlement.
Zunvo Titanium Products Co., Ltd. manufactures high-integrity titanium drilled bolts engineered directly from Grade 5 Ti-6Al-4V (UNS R56400, Werkstoff 3.7165). This alpha-beta alloy combines an exceptional yield strength exceeding 828 MPa with an ultimate tensile strength surpassing 895 MPa, while offering an ultimate structural density of merely 4.43 g/cm³. By introducing multi-axis cross-drilling across the bolt hex heads, flanges, and shank ends, our factory provides a physical retention solution via safety-wire (lockwire) mechanics that physically prohibits bolt back-out under acute vibration frequencies.
"Unlike secondary workshop machining where manual drilling introduces micro-fractures, stress-concentration notches, and tool burrs into the fastener head, Zunvo utilizes simultaneous multi-spindle carbide EDM drilling followed by high-frequency electrochemical deburring. This guarantees clean 1.2 mm to 2.0 mm safety-wire apertures that never fray 0.032" stainless lockwire or initiate micro-crack propagation under extreme dynamic torsional loads."
Thread integrity forms the second line of defense in safety-critical fastening. While cut threads sever the natural metallurgical grain lines of the titanium bar stock, Zunvo utilizes cold-heading and precision cylindrical die thread-rolling post heat-treatment. Thread-rolling compacts the crystalline grain structure along the flanks and root radiuses of the threads, generating a compressive residual surface stress that boosts fatigue endurance limits by more than 300% compared to machine-cut fasteners. For high-shear installations—such as brake caliper brackets, suspension uprights, and drive couplings—rolled threads ensure thread class 6g / 6H fitment according to ISO 965-1 without galling risk when torqued with anti-seize lubrication.
Empirical Comparison
Fastener Material Performance Index
Laboratory-tested mechanical, chemical, and physical parameters comparing Grade 5 Titanium against standard structural fastener alloys.
| Mechanical / Physical Property | Zunvo Gr5 Ti-6Al-4V Drilled | A2-70 (AISI 304) Stainless | Class 10.9 Alloy Steel | 7075-T6 Billet Aluminum |
|---|---|---|---|---|
| Density (ρ) | 4.43 g/cm³ (-44% vs Steel) | 7.93 g/cm³ | 7.85 g/cm³ | 2.81 g/cm³ |
| Yield Strength (Rp0.2) | ≥ 828 MPa | 450 MPa | 940 MPa | 505 MPa |
| Tensile Strength (Rm) | ≥ 895 - 1050 MPa | 700 MPa | 1040 MPa | 570 MPa |
| Strength-to-Weight Ratio | 214 kN·m/kg (Exceptional) | 88 kN·m/kg | 132 kN·m/kg | 202 kN·m/kg |
| Vibration Loosening Prevention | Cross-Drilled Safety Wire Lock | Split Washer (Low) | Nylon Nut / Chemical Loctite | Friction only |
| Marine & Acid Resistance | Impervious (Stable TiO2 Film) | Moderate (Pitting in Cl-) | Poor (Rapid Oxidation) | Pitting & Galvanic Attack |
| Fatigue Limit (107 cycles) | 510 MPa (Rolled Threads) | 240 MPa | 420 MPa | 160 MPa |
Geographic & Industrial Relevance
Mission-Critical Application Scenarios in San Salvador
Engineered to resolve the specific operational, climatic, and mechanical stress points encountered by Salvadoran industries and high-performance sectors.
Professional Racing at Autódromo El Jabalí
Located directly in the San Salvador volcanic valley, the Autódromo Internacional El Jabalí requires strict mechanical scrutineering. High ambient track temperatures and continuous heavy braking zones induce severe thermal expansion on brake calipers, floating rotor bobbins, and rear hub sprocket studs. Zunvo titanium cross-drilled bolts permit positive-locking safety wire installation compliant with FIA and FIM regulations, preventing unseating under extreme thermal cycling while cutting unsprung rotating mass for superior throttle response.
Maritime Infrastructure & Acajutla Logistics
Industrial machinery, heavy cranes, intermodal transport, and marine equipment operating between San Salvador and the Pacific maritime ports of Acajutla and La Libertad suffer rapid chloride corrosion. High salinity and tropical humidity corrode standard cadmium-plated or galvanized steel bolts within months. Zunvo Ti-6Al-4V fasteners form an instantaneous, self-healing passive rutile TiO2 oxide film, guaranteeing zero pitting, no crevice corrosion, and maintenance-free longevity.
Geothermal Turbines & Agro-Industrial Mills
El Salvador generates substantial baseload electricity via geothermal power plants (such as Ahuachapán and Berlín) and processes vast sugar agricultural tonnage. High-pressure steam containing hydrogen sulfide (H2S), combined with violent centrifuge vibration in sugar processing plants (ingenios azucareros), causes catastrophic sulfide stress cracking in conventional high-tensile steels. Zunvo titanium drilled bolts provide absolute immunity to sulfide gas corrosion while remaining mechanically locked via safety wire.
Market Analysis & Technical Trends in Central America
Over the past five years, the industrial and automotive manufacturing landscape in El Salvador has pivoted aggressively toward automation, high-end motorsport engineering, and preventive maintenance architectures. With the government’s focus on modernizing infrastructure and attracting international light-manufacturing investment, purchasing directors in San Salvador are replacing consumable fasteners with lifetime-service exotic alloys.
Specifically, three dominant macroeconomic and technical trends are driving the demand for titanium drilled fasteners within the Salvadoran market:
- Scrutineering Harmonization with International Motorsport Bodies: Salvadoran touring car, superbikes, and off-road trophy truck leagues are progressively adopting FIA, SCCA, and FIM rulebooks. These regulations mandate positive mechanical locking on critical running gear (caliper bolts, oil drain plugs, steering knuckles, and suspension links). The practice of manual "garage drilling" is being systematically rejected by tech inspectors due to structural compromise, driving direct factory orders for certified, pre-drilled titanium fasteners.
- Lifecycle Cost Reduction in Humid-Tropical Processing: Commercial processing facilities in Greater San Salvador, Soyapango, and Ilopango are calculating the Total Cost of Ownership (TCO) for plant machinery. While zinc-plated 10.9 steel fasteners carry a lower initial purchase price, the combined costs of galling, seized threads, periodic anti-rust spraying, and unscheduled shutdowns vastly outweigh the initial capital outlay of titanium. Grade 5 titanium bolts offer indefinite service life under tropical humidity.
- Downhill MTB & Extreme Enduro Racing Growth: The mountainous cordilleras encircling the San Salvador volcano (Boquerón) and the northern chalatenango highlands have fostered an elite mountain bike and enduro racing culture. Enthusiasts and mechanics seek titanium hardware to shed rotational and unsprung mass without sacrificing structural reliability on brutal volcanic rock descents.
Direct From The Source
Why San Salvador Procures Directly from Zunvo
Headquartered in Baoji, China's world-renowned "Titanium Valley," Zunvo combines primary material control with aerospace-grade CNC fabrication.
Integrated Baoji Supply Chain
Operating directly at the core of China's titanium refining cluster gives Zunvo immediate access to vacuum-arc remelted (VAR) Ti-6Al-4V bar stock. Every billet is 100% ultrasonically tested to ASTM B348 / AMS 4928 standards, eliminating internal voids or segregation before machining begins.
5-Axis High-Speed CNC Machining
Equipped with state-of-the-art Japanese Tsugami sliding-head lathes and multi-axis machining centers, our 101–200 strong team holds tolerances down to ±0.005 mm. We machine custom cross-drilled geometries, flanged lightening pockets, and hollow-core bolt bodies with micro-inch surface finishes.
Strict Metrology & Traceability
Our dedicated inspection room conducts optical thread profiling, optical sorting, go/no-go plug gauging, and digital torque-to-yield destructive testing. Every production shipment arrives in San Salvador accompanied by an authentic Mill Test Certificate (MTC) detailing heat numbers, chemical assays, and mechanical tensile results.
Procurement Assurance
Frequently Asked Questions for San Salvador Buyers
Everything procurement engineers, machine shop managers, and race team principals need to know about ordering titanium hardware.
What is the typical transit time and shipping route to San Salvador?
We provide door-to-door express delivery to San Salvador via DHL Express, FedEx International Priority, and UPS with a transit time of 4 to 7 business days from our factory floor directly to your facility in San Salvador, Santa Tecla, or Ilopango. For volume commercial consignments exceeding 300 kg, we support CIF sea freight landing at Puerto de Acajutla (approximately 28–35 days ocean transit) or DAP air freight to Aeropuerto Internacional Monseñor Óscar Arnulfo Romero (SAL).
How do we verify that the fasteners are genuine Grade 5 Ti-6Al-4V?
Every shipment includes an authentic EN 10204 3.1 Inspection Certificate traceable back to the raw ingot smelting batch. This report details exact chemical spectrometry (Aluminum 5.5–6.75%, Vanadium 3.5–4.5%, Iron ≤ 0.40%, Oxygen ≤ 0.20%) and mechanical elongation and tensile proofs. Local buyers can also independently verify alloy composition in San Salvador through handheld XRF analysis.
Can Zunvo machine custom cross-drilled hole patterns to drawing?
Yes. While we maintain a deep inventory of standard DIN, ISO, and race-standard drilled flange bolts (with 6-point radial head drillings), our primary business is OEM custom production. You can supply CAD files (STEP, DXF, IGES) or physical samples. We provide technical drawing reviews within 24 hours and can dispatch CNC prototypes within 3 days.
What surface finishes are recommended for tropical and marine use?
For maximum corrosion resistance, bare polished Grade 5 titanium is already practically inert in tropical salt spray. However, for color coding, brand identity, or increased surface lubricity, we offer high-voltage electrochemical anodizing (Burned Blue, Gold, Purple, Green, Rainbow) and Physical Vapor Deposition (PVD) coatings (DLC Diamond-Like Carbon Black, Titanium Nitride Gold, Neo-Chrome). PVD provides extreme surface hardness (≥ 2500 HV) to resist gravel impact.
What is the minimum order quantity (MOQ) for B2B orders?
For stock standard metric sizes (M5 to M12 drilled hex flange bolts), our MOQ starts at only 100 to 200 pieces, allowing engineering firms and workshop builders to test fitment without tying up excessive working capital. For custom ground-up drawing components, production runs typically begin at 100 units.
How do we prevent galling when installing titanium bolts into aluminum housings?
Because titanium has an extremely adherent oxide layer, friction against aluminum engine blocks or caliper brackets can induce microscopic cold-welding (galling) if installed dry. Zunvo recommends applying a high-grade nickel-based or copper-based anti-seize paste, or moly grease, on all titanium threads prior to tightening to specified torque values (typically 80–85% of steel dry torque).
Connect Directly with Our Titanium Fastener Engineers
Whether you require standard race-drilled flange bolts or custom-machined blueprint prototypes delivered to San Salvador, our technical team provides rapid quotations, CAD analysis, and certified material reports within 7 hours.
