Engineered Grade 5 (Ti-6Al-4V) Bicycle & Performance Bolts
Precision rolled-thread aerospace fasteners manufactured under strict ASTM B348 and DIN standards. Sourced directly from China's primary metallurgical core for world-class weight reduction and tensile safety.
Burnt Blue / E-Bike
DIN 912 Hex
M3–M20 Metric
Direct Stock
Rotor / Brake Spec
Stem Bolt / Integrated
DIN 6923 Flanged
Metallurgical Architecture: Gr5 Ti-6Al-4V vs. Structural Steels in Cycling
In high-performance cycling, component dynamics require an optimal ratio between tensile yield strength, cyclic fatigue life, and rotational inertia. As China's premier manufacturer based in Baoji—the undisputed capital of titanium extraction and metallurgical refinement—Yevzo Titanium engineers select certified Ti-6Al-4V (Grade 5, ASTM B348) bars to satisfy rigorous international sporting compliance.
Unlike standard carbon or austenitic stainless fasteners (such as AISI 304 or A4-70), titanium alloys possess an exceptional strength-to-weight ratio. With a physical density of only 4.43 g/cm³ compared to steel's 7.85 g/cm³, converting frames, suspension pivots, disc calipers, and cockpit components to titanium immediately achieves a 42% to 45% weight saving while vastly improving shear resilience.
| Mechanical Metric | Gr5 Titanium (Ti-6Al-4V) | Gr2 Titanium (CP) | Class 8.8 High-Tensile Steel | Class 10.9 Alloy Steel | 7075-T6 Anodized Aluminum |
|---|---|---|---|---|---|
| Tensile Strength (Rm) | 895 – 1050 MPa | 345 – 450 MPa | 800 – 830 MPa | 1000 – 1040 MPa | 510 – 540 MPa |
| Yield Strength (Rp 0.2) | 828 – 920 MPa | 275 – 350 MPa | 640 MPa | 900 MPa | 430 – 480 MPa |
| Density (g/cm³) | 4.43 | 4.51 | 7.85 | 7.85 | 2.81 |
| Modulus of Elasticity (GPa) | 110 – 114 | 103 – 105 | 205 – 210 | 210 | 71 – 72 |
| Atmospheric & Salt Corrosion | Immune (TiO₂ Film) | Immune (TiO₂ Film) | Vulnerable to Rust | High Oxidation Risk | Galvanic Pitting Prone |
| Thread Forming Method | Cold Rolled (Uncut Grains) | Turned / Rolled | Hot/Cold Rolled | Cold Formed | CNC Cut (Fragile) |
A frequent error among lower-tier suppliers is cutting threads via subtractive CNC operations instead of cold thread rolling. CNC-cut threads sever the internal metallurgical grain lines, creating localized stress risers that fracture under high-frequency vibration during downhill racing or rough gravel riding. At Yevzo's factory, our cycling fasteners undergo precision high-pressure roll threading after CNC profiling, creating continuous grain flow lines that elevate fatigue resistance by upwards of 300%.
Future Sourcing & Procurement Trends in Bicycle Titanium Fasteners
The global bicycle hardware supply chain is shifting rapidly under the influence of three major market catalysts: the explosion of heavy-duty E-Bikes, the standardisation of internal cable cockpits, and corporate sustainability mandates. B2B OEM procurement directors must consider the following technical trajectories to maintain competitive edge:
1. E-Bike & Cargo High-Torque Hardening
Electric bikes subject frame mounting points, motor brackets, and rear dropouts to constant drive torque exceeding 85–120 Nm. Fastener failure in steel hardware due to shear fatigue has accelerated the adoption of Gr5 titanium DIN 6921 flanged bolts, which distribute high clamp loads without adding frame weight.
2. PVD & Type-II Hard Anodizing
Traditional electrochemical rainbow and burnt-blue anodizing remain consumer favorites for aesthetic tuning. However, the commercial market is rapidly demanding physical vapor deposition (PVD) DLC (Diamond-Like Carbon) coatings that enhance surface hardness (up to 3000 HV), eliminating thread galling and micro-fretting.
3. Direct-from-Source Traceability
Tier-1 bicycle brands now require complete supply chain transparency under ISO 9001 and ESG directives. Purchasing directly from a Baoji vertically integrated facility guarantees heat-lot chemical spectrometry (EN 10204 Type 3.1) from raw sponge to packaged fasteners, protecting brands against liability.
Why Global Bike Manufacturers Partner with Yevzo Titanium Metal Co., Ltd.
Located in the Honeycomb Industrial Park, Fenghuang 3rd Road, High-Tech Development Zone of Baoji, Shaanxi, China, Yevzo Titanium Metal Co., Ltd. has specialized in non-ferrous manufacturing since 2013. Operating in "China's Titanium Valley" provides unprecedented raw sponge access, rapid batch turnaround, and localized metallurgical testing labs. Our manufacturing philosophy remains simple: "Titanium concentration, service intention."
Integrated Source Factory
Eliminate middle-tier markups and communication loss. We operate 100+ machining units, multi-axis Swiss lathes, and dedicated cold rolling headers in-house.
Micron-Level Tolerance
Fastener heads, socket hex/Torx recesses, and thread pitches conform strictly to DIN 912, DIN 6921, ISO 4014, and custom CAD drawings within ±0.02 mm.
Custom OEM / ODM Service
Buyer branding, custom laser logo etching, bespoke thread lengths, countersunk step geometries, and custom anodized colors: purple, gold, burnt rainbow, and black.
Flexible Global Logistics
We support low sample MOQs (from 20–30 pcs for stock parts) and bulk wholesale. Fully compliant with FOB, CFR, CIF, EXW, FCA, CPT, DDP, and door-to-door express delivery.
Bicycle Titanium Fastener Sourcing & Engineering FAQ
Comprehensive technical guidance from Yevzo's chief metallurgists and international sales team.
Why is Ti-6Al-4V (Grade 5) preferred over pure Grade 2 for bicycle stem, disc rotor, and crank bolts? +
How do bicycle assemblers prevent galling and galvanic corrosion when installing titanium bolts into aluminum frames? +
Does electrolytic color anodizing (burnt blue, gold, purple) degrade the structural integrity or thread tolerance of the bolt? +
What is the standard production turnaround and Minimum Order Quantity (MOQ) for custom bike OEM designs? +
What quality testing documentation is provided with every shipment? +
Accelerate Your Bicycle Fastener Supply Chain
Partner directly with China's dedicated titanium fastener manufacturing center in Baoji. Send us your CAD drawings (.STEP, .IGS, .DWG) or OEM standard lists for rapid 24-hour engineering quotes.