Titanium Torx Head Motorcycle Bolt Class 8.8 Gr5 PVD Coated CNC Star Screw for Bike Modification OEM Manufacturer
- Drive Style: Torx Star Drive (T25–T50)
- Yield Strength: ≥ 828 MPa (Ti-6Al-4V)
- Surface: Multi-Color PVD Physical Vapor
Direct manufacturer supply from our ISO 9001 certified CNC production hub. Engineered with aerospace-grade Ti-6Al-4V (Grade 5) bar stock to withstand extreme sub-zero shock loading, cyclic fatigue, and road-deicing salt corrosion.
A comprehensive technical analysis of Ti-6Al-4V Grade 5 microstructures, cryogenic fatigue resistance, cold galling kinetics, and unsprung dynamic load optimization across Swedish motorsport and high-performance sectors.
In modern performance vehicle dynamics—from the tight chicanes of Karlskoga Motorstadion to the brutal gravel surfaces of Rally Sweden in Umeå—managing rotational inertia and unsprung mass determines transient mechanical grip. Fasteners located on wheel hubs, brake caliper mounts, drive shaft flanges, and suspension uprights exert direct secondary parasitic inertia. Upgrading these dynamic nodes to Yevzo's Ti-6Al-4V (Grade 5, UNS R56400) provides a 44% mass reduction over Grade 8.8 and 10.9 steel without sacrificing ultimate shear capability.
Unlike commercial unalloyed titanium (Grade 2) which exhibits an annealed tensile limit around 345–450 MPa, Ti-6Al-4V is an alpha-beta dual-phase alloy possessing a nominal composition of 6% Aluminum (alpha stabilizer) and 4% Vanadium (beta isomorphous stabilizer). When precision solution-treated and aged (STA) or hot-forged with rolled thread flanks, Ti-6Al-4V yields a fatigue threshold exceeding 510 MPa under 107 alternating cycles. This makes our titanium bolts the preferred option for Swedish OEM performance builders and privateer racing teams alike.
| Property / Engineering Metric | Ti-6Al-4V (Grade 5) STA | Commercial Grade 2 Ti | Carbon Steel Class 10.9 | A4-80 Stainless Steel |
|---|---|---|---|---|
| Nominal Density (ρ) | 4.43 g/cm³ | 4.51 g/cm³ | 7.85 g/cm³ | 7.95 g/cm³ |
| Yield Strength (Rp 0.2) | 880 – 950 MPa | 275 – 350 MPa | 940 MPa | 600 MPa |
| Tensile Strength (Rm) | 950 – 1100 MPa | 345 – 480 MPa | 1000 – 1040 MPa | 800 MPa |
| Specific Strength (Strength-to-Weight) | 225 kN·m/kg (Max) | 95 kN·m/kg | 127 kN·m/kg | 101 kN·m/kg |
| Modulus of Elasticity (E) | 114 GPa (Higher compliance) | 105 GPa | 210 GPa | 193 GPa |
| Salt Spray Corrosion (ISO 9227) | > 5,000 Hours (Immune) | > 5,000 Hours | Rusts < 96 hrs if coating fails | Susceptible to pitting/crevice |
| Ductile-to-Brittle Temp (DBTT) | Below -196°C (No DBTT) | Below -100°C | -15°C to -30°C (Brittle Hazard) | None (FCC lattice) |
From national GT and rally series to high-end Gothenburg and Ängelholm automotive engineering hubs, our titanium fasteners solve specific environmental and mechanical challenges.
In high-downforce, curb-battering touring car racing at circuits like Mantorp Park and Ring Knutstorp, unsprung corner weight directly dictates tire temperature management. Yevzo's Class 10.9-equivalent Grade 5 hub bolts, caliper studs, and suspension link fasteners reduce rotating masses at the wheel assembly by upwards of 1.4 kg per corner, allowing rapid shock valving recovery and sharper steering response.
Sub-zero conditions down to -35°C across Västerbotten and Norrbotten present severe embrittlement risks for traditional quenched and tempered high-carbon steel screws. When steel reaches its ductile-to-brittle transition temperature, impact shock from frozen ice-ruts causes sudden fastener head shear. Yevzo Grade 5 Ti-6Al-4V fasteners retain high elongation (≥10%) and structural toughness in deep-subzero operations.
Sweden's vibrant powerboat racing community operating out of Gothenburg, Marstrand, and the Stockholm archipelago battles brackish to high-salinity seawater. Ordinary zinc-plated fasteners suffer catastrophic sacrificial coating depletion in months. Titanium Grade 5 immediately generates an amphoteric oxide passivation film (TiO2) that remains inert against chloride pitting, stress corrosion cracking (SCC), and galvanic crevice decay.
Sweden houses an elite ecosystem of boutique hypercar manufacturers and precision aftermarket tuners (from Ängelholm to Trollhättan). Engine bay dress-up and structural engine applications demand high heat resistance. Grade 5 titanium bolts maintain structural integrity up to 380°C—ideal for turbocharger exhaust manifold studs, wastegate flanges, and heat shield standoffs where stainless steel creeps or oxidizes.
With Sweden leading the European transition to electrified commercial and performance platforms, vehicle structural mass is a major engineering hurdle due to heavy lithium-ion packs. Replacing steel chassis subframe bolts, battery tray tie-down hardware, and inverter housing bolts with custom CNC titanium components cuts direct structural mass while eliminating electrical corrosion interfaces through custom anodization.
In cross-country backcountry snowmobile endurance racing (SnoCross) throughout Kiruna and Östersund, drive sleds endure massive G-force jumps. Every gram shaved off the front A-arms, skid frames, and tunnel joints results in faster track acceleration and lower suspension damping fatigue. Our custom titanium hex and torx flange bolts deliver unyielding endurance through freezing powder and salted transit trailers.
Swedish industrial procurement protocols operate under rigorous standards for environmental sustainability, carbon footprint reduction, and supply chain material validation.
Swedish importers enforce strict chemical controls overseen by KemI (Swedish Chemicals Agency). All Yevzo titanium fasteners are 100% free of restricted SVHCs (Substances of Very High Concern), Hexavalent Chromium (Cr6+), Lead, and Cadmium commonly found in cheaper anti-corrosion platings. Mill test certs verify elemental purity per ASTM B348 and ASTM F136 requirements.
Sweden's Transport Administration (Trafikverket) spreads extensive Sodium Chloride (NaCl) and Calcium Chloride (CaCl2) brine mixes throughout winter. While zinc-nickel plated grade 10.9 steel fasteners undergo stress corrosion micro-cracking due to hydrogen embrittlement during acid-salt interactions, titanium fasteners remain completely unaffected by chloride immersion, protecting safety-critical chassis bolts.
Swedish OEMs evaluate procurement via Total Cost of Ownership (TCO) and Lifecycle Assessment (LCA). Because Ti-6Al-4V fasteners do not degrade, require zero chemical replating, and survive multiple rebuild cycles without thread fatigue stripping, their lifecycle cost is drastically lower than consumable alloy steel fasteners in demanding racing series.
Located in the heart of Baoji—China's world-renowned "Titanium Valley"—Yevzo operates over 100 high-precision CNC machining units with vertically integrated heat lot traceability since 2013.
Baoji produces the vast majority of China's titanium sponge, ingots, and aerospace grade bars. Being directly integrated within this cluster gives Yevzo direct access to virgin sponge melts, vacuum arc remelting (VAR) quality stock, and reduced raw material lead times that insulate Swedish distributors from international market volatility.
Our machine park includes modern 3-axis, 4-axis, and 5-axis turning-milling centers, hydraulic cold-heading presses, optical thread inspection machines, and automated vacuum anodizing reactors. We execute drawing tolerances down to ±0.005 mm on thread pitch, concentricity, and head taper dimensions.
Every shipment bound for Arlanda Cargo, Gothenburg Port, or direct DDP warehouse delivery includes comprehensive inspection dossiers: Spectral chemical analysis, tensile and proof load test curves, ultrasonic inspection reports (AMS 2631), and surface roughness profilometry records.
Clear, direct answers regarding material mechanics, thread galling mitigation, Swedish import customs, and custom manufacturing minimums.
Connect directly with Yevzo's metallurgical and fastening engineering team. Whether you need standard catalog shipments for Swedish retail distribution or custom-manufactured race fasteners per CAD drawings, we guarantee mill-certified quality and rapid Scandinavian delivery.
Send your drawings (STEP, DWG, PDF) or size lists for a comprehensive quotation within 24 hours.
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