Manufactured from mill-certified ASTM B348 Grade 5 bars using high-precision CNC multi-axis centers. Calibrated for extreme shear, rotational damping, and zero thread binding.
In commercial and recreational motorcycle engineering, threaded fasteners are subjected to compound stress states: dynamic cyclical tensile loads, harmonic shear vibrations, and extreme chemical attacks from road contaminants. Throughout Western Cambodia, particularly in the agricultural trading corridor of Battambang Province, the operational lifespan of traditional class 8.8 zinc-electroplated carbon steel or standard SUS304/SUS316 austenitic stainless hardware is severely shortened. Tropical humidity exceeding 85%, combined with monsoon floodwater submergence and alluvial alkaline soil friction, initiates rapid galvanic pitting, stress-corrosion cracking (SCC), and thread seizing.
Yevzo Titanium Metal Co., Ltd. resolves these structural failures at the source factory level. Utilizing certified alpha-beta aerospace titanium alloy (Ti-6Al-4V / ASTM Grade 5), our CE-certified motorcycle fasteners deliver an exceptional strength-to-density ratio ($4.43\ \text{g/cm}^3$ vs. $7.85\ \text{g/cm}^3$ for steel), coupled with an impervious titanium dioxide ($\text{TiO}_2$) passive layer that instantly regenerates if mechanically scratched during field servicing.
| Mechanical & Physical Property | Ti-6Al-4V Grade 5 (Yevzo CE Spec) | Grade 2 (Commercially Pure Ti) | Carbon Steel (Class 8.8 / 10.9) | Stainless Steel (A2-70 / SUS304) |
|---|---|---|---|---|
| Ultimate Tensile Strength ($\sigma_b$) | 950 – 1050 MPa | 345 – 450 MPa | 800 – 1040 MPa | 700 MPa |
| Yield Strength ($0.2\%\ \text{Offset}$) | 880 – 920 MPa | 275 MPa | 640 – 940 MPa | 450 MPa |
| Density ($\rho$) | 4.43 g/cm³ | 4.51 g/cm³ | 7.85 g/cm³ | 7.93 g/cm³ |
| Modulus of Elasticity ($E$) | 114 GPa (Shock Dampening) | 105 GPa | 205 GPa (Rigid) | 193 GPa |
| Atmospheric & Salt Pitting Resistance | Immune (Active Passive Oxide) | Immune | Severely Degraded (Needs Zinc) | Susceptible to Crevice Pitting |
| Thread Rolling Method | Cold-Rolled Grain Alignment | Cut / Thread Rolled | Cold-Formed | Cold-Worked |
Unlike lower-tier suppliers that lathe-cut bolt threads, every structural motorcycle fastener machined at Yevzo is manufactured using thread-rolling dies under continuous lubrication. Lathe cutting severs the continuous metallic crystalline grains of the Ti-6Al-4V bar, creating micro-notches at the thread root where cyclic fatigue cracks initiate under brake and suspension vibration. Yevzo's cold-rolling process plastically deforms the grain flow along the flank and root radius, generating residual compressive surface stress that elevates fatigue endurance by over 300%.
With an Elastic Modulus of approximately 114 GPa—almost half that of steel (205 GPa)—Grade 5 titanium acts as an internal elastic spring washer within the structural joint. Under high-amplitude low-frequency vibration typical of single-cylinder underbone bikes (110cc–150cc) driven across unpaved provincial roads in Battambang, our fasteners absorb joint micro-deflections without relaxing preload torque, drastically reducing the occurrence of bolt loosening.
From Poipet border freight transit along National Road 5 to heavy agricultural hauling across muddy rural districts, Grade 5 titanium solves localized mechanical breakdown points.
In rural Battambang communes (e.g., Banan, Bavel, Moung Ruessei), motorbikes equipped with extended chassis and dual rear-shock linkages routinely carry 250–400 kg of rice sacks, cassava, and fertilizer bags. Steel swingarm pivot bolts and shock-mounting studs repeatedly bend or shear under sudden pothole impacts. Upgrading to Yevzo Grade 5 M10/M12 high-shear bolts preserves structural chassis alignment while preventing catastrophic joint shear failure.
The commercial route connecting Battambang, Sisophon, and the Poipet Thai border experiences torrential monsoon flooding from May through October. Submerged wheel hubs and brake calipers cause galvanic rust between steel bolts and cast-aluminum fork lowers. Our DIN 6921 hex flange titanium bolts, anodized with a micro-dielectric film, completely halt galvanic cell formation, enabling trouble-free caliper servicing without snapped heads.
Battambang city features a rapidly expanding custom motorcycle scene centered around modified underbones (Honda Dream 125, Wave 110i, Yamaha Exciter 155). Enthusiasts demand precision PVD burnt blue, rainbow, and satin gold hardware for sprocket nuts, rotor bolts, and crankcase dress-up. Yevzo delivers factory-direct aesthetic brilliance backed by real race-certified Grade 5 tensile integrity, not soft cosmetic aluminum.
Operating since 2013 from the Honeycomb Industrial Park within Baoji High-Tech Zone—globally recognized as China's Titanium Valley—Yevzo controls the complete value stream from vacuum arc remelted titanium ingots and ASTM B348 hot-forged bars to 5-axis CNC turning and secondary surface passivation.
Every titanium bar used in our fastener production is verified via Optical Emission Spectrometry (OES) and ultrasonic non-destructive testing (NDT). Mill Test Certificates (MTC) conforming to EN 10204 3.1 accompany every Battambang shipment, providing chemical breakdown and physical yield verification.
With over 100 sets of Japanese and Taiwanese high-speed CNC turning-milling centers, we achieve critical pitch tolerances within ISO 965 standard Class 6g/6H. Flange seat concentricity is maintained within 0.02 mm to guarantee even torque preloading and absolute structural sealing.
Our in-house surface engineering laboratory applies Physical Vapor Deposition (PVD) titanium nitride and electrochemical anodization. These ultra-thin coatings (2–4 μm) introduce no thread pitch dimensional shifts while elevating surface Vickers hardness above 2200 HV.
The automotive and two-wheeler spare parts market in Battambang is undergoing a structural transformation. Three prominent supply chain trends are dictating commercial purchasing strategies:
Fleet maintenance facilities and major workshop networks in Battambang are shifting away from cheap chrome-plated bolts that peel and rust within 6 months. By investing in Grade 5 titanium fastener kits, commercial delivery fleets and moto-taxi fleets slash recurring labor replacement costs to zero over multi-year asset lifespans.
Proximity to transit arteries allows shipments from our Baoji factory to reach Battambang warehouses quickly via multimodal sea freight through Sihanoukville Port or consolidated overland transit via the Bangkok-Poipet-Battambang economic corridor, drastically minimizing inventory lead times.
Cambodian aftermarket parts distributors increasingly seek private-label branding. Yevzo provides complete buyer-label customization: laser-etched logos, branded blister clamshell packaging, and tailor-made bolt assortments optimized specifically for popular domestic models like the Honda C125 Super Cub, Scoopy, and Dream.
Key technical, mechanical, and logistical guidance curated for mechanics, engineering distributors, and wholesale purchasers.
Send your dimensional drawings (PDF, STEP, CAD) or standard fastener sizing requirements to our engineering team. Receive factory-direct wholesale pricing, material certifications, and custom sample production schedules within 24 hours.