Gr5 / Gr2 Ti
Export Inventory Portfolio
Precision Titanium Stud Bolts & Fastener Assemblies
Engineered to international specifications (DIN, ISO, ASTM) and customizable via CAD/STEP drawings. High tensile, extreme corrosion resistance, and optimized for European industrial integrations.
Ti-6Al-4V CNC
M8 Titanium Torx Head CNC Bolt Gr5
Engineering Specs
Aerospace Gr5
Gr5 Anodized Torx Chassis Screws
Engineering Specs
Ultra-Lightweight
Large Cap Head Titanium Hex Bolts
Engineering Specs
Thermal Exhaust
Exhaust Manifold Titanium Stud Kits
Engineering Specs
Critical Safety
Brake Rotor M8 High-Shear Bolts
Engineering Specs
DIN 6921 Base
Flange Head Hex Allen Titanium Bolts
Engineering Specs
Class 8.8 Equivalent
Socket Head Gr5 Fastener & Nut Set
Engineering Specs
Technical Whitepaper & Application Framework
Optimizing Titanium Fasteners for Lisbon's Coastal & High-Tech Ecosystem
A technical evaluation on mitigating galvanic reactions, maximizing mass savings in unsprung assemblies, and establishing predictable fastener tensioning within the Atlantic maritime climate of Portugal.
Tagus Estuary Marine Defense & Shipyards
Lisbon’s proximity to the Atlantic Ocean and the busy Tagus estuary maritime industrial belt (including drydocks in Setúbal and Lisbon Port) demands structural integrity against extreme saltwater fog. Our Gr5 titanium studs resist chloride stress corrosion cracking, offering pitting resistance equivalent to PREN > 45, far outlasting 316L stainless steel in coastal pump housings, hydraulic flange connections, and underwater sensor brackets.
Automotive Racing & EV Component Engineering
Portugal’s growing electric mobility cluster and track-racing engineering centers around Estoril leverage Yevzo Gr5 wheel stud sets and motor-mount bolts. Swapping high-tensile steel fasteners for Ti-6Al-4V reduces unsprung rotating mass by 44%, lowering rotational inertia, boosting energy recovery in performance battery packs, and eliminating fatigue risks during high-temperature regenerative braking cycles.
Aerospace & Offshore Renewable Infrastructure
Floating offshore wind platforms off the Portuguese coast and aerospace composite manufacturing demand non-magnetic, chemically inert anchoring points. Titanium stud kits machined to Class 5H/6g thread clearances ensure consistent preload values without risk of galvanic embrittlement when paired with carbon-fiber reinforced polymers (CFRP), where aluminum fasteners fail via cathodic interaction.
| Metallurgical Property | Ti-6Al-4V (Grade 5 Titanium) | Commercially Pure Ti (Grade 2) | AISI 316L Marine Stainless | High-Tensile Steel (Class 10.9) |
|---|---|---|---|---|
| Ultimate Tensile Strength (MPa) | 895 – 1000 MPa | 345 MPa | 580 – 620 MPa | 1040 MPa |
| Yield Strength (0.2% Offset) | 828 MPa | 275 MPa | 290 MPa | 940 MPa |
| Specific Density (g/cm³) | 4.43 g/cm³ | 4.51 g/cm³ | 8.00 g/cm³ | 7.85 g/cm³ |
| Strength-to-Weight Ratio | 202 kN·m/kg | 76 kN·m/kg | 75 kN·m/kg | 132 kN·m/kg |
| Chloride Pitting Resistance (Marine) | Virtually Impervious | Excellent | Susceptible to Crevice Corrosion | Rapid Degradation (Requires Plating) |
| Thermal Expansion (10⁻⁶/K) | 8.6 | 8.6 | 16.0 | 11.5 |
Regional Supply Chain Dynamics
Lisbon Sourcing Trends: Lean Logistics & Strategic Sourcing
How procurement heads in the Lisbon metropolitan area and northern industrial belts optimize cash-flow, manage EU carbon-neutral compliance, and guarantee supply continuity directly from China's primary titanium hub.
Bypassing Multi-Tier European Markups
Portuguese engineering procurement has shifted from German and British distribution centers directly to Tier-1 manufacturers in Baoji. By cutting intermediate stockholders, Portuguese importers reduce hardware bill-of-materials (BOM) costs by 28% to 42% while retaining mill-level raw material test certificates (MTC 3.1).
Multi-Modal Transit to Port of Lisbon & Sines
Standard delivery mechanisms leverage multimodal air freight (6-9 days to Lisbon Portela Airport) for high-urgency OEM testing batches, alongside regular consolidated maritime shipping (28-35 days via Port of Sines or Lisbon Port), reducing warehouse storage overhead through predictable blanket orders.
Pre-Engineered Anti-Galling Tolerances
Due to high salt-air exposure in Portuguese coastal assembly plants, thread seizure is a primary failure mode. Lisbon engineers specify rolled Class 6g threads coated with PVD or dry-film lubricants, preventing thread galling during automated pneumatic torque installation cycles.
Compliance with EU Directives
Every consignment destined for the European single market undergoes full RoHS, REACH, and dimensional optical sorting, guaranteeing zero non-conforming lots across safety-critical assemblies in maritime robotics and aerospace structures.
2013
Operational Origin
100+
CNC Machining Centers
1,000+
Factory Workforce
5.0 / 5.0
Verified Customer Score
Baoji Titanium Valley Advantage
Direct Manufacturing Authority with Unbroken Traceability
Yevzo Titanium Metal Co., Ltd. operates from the Fenghuang 3rd Road High-Tech Zone in Baoji, Shaanxi—widely recognized as China's "Titanium Valley." Because Baoji accounts for the majority of global titanium sponge refinement and bar forging, we source Grade 5 (Ti-6Al-4V) and Grade 2 bars directly from primary ingot melts, eliminating downstream material tampering and alloy deviations.
Every titanium stud bolt, manifold stud, and custom CNC component is produced according to a strict five-stage quality checkpoint protocol: spectrometer melt verification, precision CNC turning/threading, ultrasonics cleaning, surface anodizing/passivation, and optical micrometer thread verification.
- Mill-Level Chemical Analysis: Supplied with 100% heat-number linked EN 10204 3.1 Inspection Certificates.
- Thread Integrity: High-speed thread rolling guarantees continuous grain flow lines, providing superior shear fatigue life compared to thread cut bolts.
- Rapid Custom Tooling: Custom thread lengths, double-ended stepped pitches (e.g., M8 into M10), and broached internal Torx profiles manufactured from client CAD drawings in 7 to 12 days.
Procurement Intelligence
Frequently Asked Questions by Lisbon Technical Buyers
Critical metallurgical answers regarding material compliance, freight routines, anti-galling assembly protocols, and tax clearance into Portugal.
What torque values should be applied to Gr5 titanium stud bolts compared to standard steel fasteners?
Grade 5 (Ti-6Al-4V) titanium possesses an elasticity modulus of approximately 114 GPa, roughly half that of carbon steel (210 GPa). Consequently, titanium stretches more under identical clamping loads. While tensile strength matches Class 8.8 and approaches Class 10.9 steel, installation torque should typically be adjusted to 75%–85% of standard steel torque when dry. When utilizing anti-seize paste (molybdenum disulfide or copper-based grease), friction coefficients drop significantly (μ ≈ 0.10–0.12), requiring torque reduction by an additional 15% to avoid over-stretching the thread roots.
How does Yevzo prevent galvanic corrosion when titanium studs are seated into aluminum engine blocks or marine casings?
Titanium has a very noble electrochemical potential (+0.05V to +0.20V), which can cause galvanic corrosion of active metals like aluminum (−0.70V to −0.90V) or carbon steel in conductive seawater environments. To protect Lisbon marine and automotive assemblies, we recommend: (1) Applying nickel- or zinc-based barrier anti-seize compound; (2) Utilizing insulating PTFE, nylon, or passivated 316 stainless washers; or (3) Specifying our proprietary PVD and electrolytic anodized titanium coatings, which create a dense, non-conductive TiO₂ barrier preventing metal-to-metal galvanic contact.
What are the logistics options, transit durations, and customs clearance procedures for deliveries to Lisbon?
We provide comprehensive Incoterms including DDP (Delivered Duty Paid), DAP, CIF, and FOB. For DDP consignments to Lisbon, Almada, or Setúbal, Yevzo handles EU import declarations, Portuguese VAT (IVA), and customs duties upfront, delivering directly to your facility door without secondary clearance delays. Urgent samples and short runs ship via DHL/FedEx (4 to 7 business days), while production tonnage travels via ocean freight to the Port of Lisbon or Sines (28 to 35 transit days).
What documentation accompanies each export batch to guarantee chemical and mechanical compliance?
Every shipment includes a comprehensive QA package: (1) EN 10204 Type 3.1 Inspection Certificate documenting the chemical composition (percentages of Ti, Al, V, Fe, C, N, H, O); (2) Tensile and yield strength test reports per ASTM B348 / ISO 6892-1; (3) Thread tolerance validation sheets verified via optical comparators and Go/No-Go plug gauges (ISO 965-1 / Class 6g); and (4) RoHS and REACH EU compliance documentation.
Can Yevzo manufacture double-ended studs with differing thread sizes or non-standard metric/imperial pitches?
Yes. Over 40% of our production volume comprises customized CNC double-end studs, exhaust adapter studs, and stepped bolts. We routinely manufacture components with metric-to-UNC/UNF transitions (e.g., M10 metric block end transition to 3/8-24 UNF chassis nut end), integrated hex drive collars, internal broached Torx sockets, and hollow weight-reduction drillings based directly on client STEP, DWG, or PDF blueprints.