Every component is precision-turned from aerospace-certified Ti-6Al-4V Grade 5 titanium billet in Baoji, offering 44% mass reduction over steel, anti-galling thread options, and zero atmospheric pitting.
Brake pad retaining pins, caliper guide pins, and pad slide bolts represent safety-critical link points within performance hydraulic braking assemblies. Subjected to dynamic shear stresses, intense friction-induced thermal spikes exceeding 500°C, and continuous road salt exposure, traditional plated carbon steel or generic 304 stainless steel hardware exhibits severe degradation: galvanic seizure, binding, micro-pitting, and fatigue deformation.
By engineering brake hardware from aerospace-grade Ti-6Al-4V Grade 5 (ASTM B348 / AMS 4928), Velnora delivers an exceptional strength-to-weight ratio combined with natural biocompatibility and corrosion immunity. Titanium forms an instantaneous, passive titanium dioxide (TiO2) ceramic film that permanently prevents chloride-ion chemical attack, ensuring brake pads slide smoothly along the pin without sticking or cocking over years of endurance operation.
Why Tier-1 racing teams, motorcycle aftermarket builders, and high-performance bicycle OEMs are ditching steel pins in favor of CNC Ti-6Al-4V:
| Material Specification | Ti-6Al-4V Grade 5 (Velnora) | 316 Marine Stainless Steel | Class 10.9 Carbon Steel | 7075-T6 Billet Aluminum |
|---|---|---|---|---|
| Density (g/cm³) | 4.43 (44% Lighter) | 7.98 (Baseline) | 7.85 (Baseline) | 2.81 (Ultra-light, Low Shear) |
| Ultimate Tensile Strength (MPa) | ≥ 895 – 960 | 580 – 620 | 1,000 – 1,040 | 540 – 570 |
| Yield Strength (0.2% Offset, MPa) | ≥ 828 | 290 | 900 | 480 |
| Salt Spray Corrosion Resistance | > 1,000 Hrs (Zero Pitting) | 240 Hrs (Crevice Risk) | 48 Hrs (Zinc Plating Rusts) | 96 Hrs (Anodize Pitting) |
| Modulus of Elasticity (GPa) | 114 (Dampens Vibration) | 193 | 210 | 71.7 |
| Thread Galling Risk & Mitigation | Rolled Threads + PVD DLC | High Galling Tendency | Low Galling / High Rust | Thread Stripping Hazard |
| Ideal Component Application | Brake Pins, Rotor Bolts, Caliper Lugs | Non-critical bodywork | Structural suspension arms | Fairing bolts only (No brakes!) |
How evolving automotive electrification, high-power e-mobility, and intelligent supply chain integration are redefining titanium brake component procurement worldwide.
With EV and performance e-bike battery packs adding substantial static mass, Tier-1 brake manufacturers are targeting the unsprung wheel assemblies. Transitioning from steel guide pins to Gr5 titanium yields immediate rotational inertia benefits, improving regenerative braking sensor accuracy and reducing pad squeal.
Future procurement specifications increasingly demand Physical Vapor Deposition (PVD) Diamond-Like Carbon (DLC) coatings over Grade 5 substrates. This micro-thin (1-3 µm) barrier reduces the coefficient of friction to μ < 0.1, eliminating stick-slip friction and pad drag without relying on messy brake grease.
Global importers are mandating EN 10204 3.1 chemical verification certificates and automated optical dimension verification. B2B buyers now refuse undocumented scrap-melt titanium, requiring vacuum arc remelted (VAR) ingots traceable to aerospace mill heat batches to avert disastrous track failures.
Traditional multi-setup manufacturing is being superseded by single-pass Swiss-type CNC automatic lathes equipped with sub-spindles and live tooling. This ensures pin shaft concentricity, thread runout within ±0.005mm, and safety split-pin cross-holes drilled in one continuous cycle without human repositioning errors.
Founded in 2013 in the East Zone of the Precision Manufacturing Park, Jinhe Industrial Park, Velnora Titanium Industry Co., Ltd. combines regional raw material mastery with advanced Swiss machining infrastructure.
Direct proximity to China's primary sponge titanium refineries ensures 100% genuine Grade 5 Ti-6Al-4V material stock with certified chemical and mechanical testing data sheets.
We dispel offshore sourcing opacity. Over 938 production inspection videos have been shared directly with clients, validating thread gauges, optical comparator reports, and surface finishes before dispatch.
Complete machining compliance across DIN, ISO, ANSI/ASME, and JIS fastener criteria, alongside custom precision fabrication directly from your 2D PDF or 3D STEP/IGES engineering files.
Tailored B2B procurement schedules: low prototyping minimums (MOQ 50-100 pcs) supporting racing pilots, scaling smoothly to containerized multi-thousand-piece monthly scheduled releases.
Our structured production workflow guarantees metallurgical purity, geometric repeatability, and traceable logistics for every export order.
Our engineering team analyzes your STEP/CAD drawing for tool access, stress concentration radius, and thread clearance to optimize CNC tool paths.
Spectroscopic chemical assay verifies aluminum (5.5-6.75%) and vanadium (3.5-4.5%) alloy percentages before centerless bar peeling begins.
High-speed turning creates micro-concentric pin shanks, while cold thread-rolling preserves grain boundary flow lines for superior shear fatigue resistance.
Automated ultrasonic degreasing followed by electropolishing, multi-stage anodization, or PVD vacuum chamber deposition (DLC, Gold TiN, Burnt Rainbow).
Coordinate measuring machines (CMM) and digital profile projectors check shank diameter runout (±0.005mm) and pitch diameter before packaging.
Hardware is packed in vapor corrosion-inhibiting blister packs and reinforced export cartons, supported by door-to-door DHL/FedEx Express and ocean logistics.
Critical engineering answers addressing metallurgy, machining limits, thread engagement, anti-seize protocols, and export compliance.
Grade 2 commercially pure titanium possesses a minimum tensile strength of roughly 345 MPa, which is inadequate for the dynamic shear loads imposed during aggressive hydraulic caliper actuation. Grade 5 (Ti-6Al-4V / TC4) is an alpha-beta alloy heat-treated to achieve tensile ratings ≥ 895-960 MPa with a yield strength ≥ 828 MPa, matching the structural integrity of high-tensile alloy steel while reducing component mass by 44%.
Titanium has a known propensity toward micro-welding (galling) under high thread friction. We counter this through three engineering safeguards: (1) cold thread rolling rather than single-point cutting to generate work-hardened, mirror-smooth thread roots; (2) optional PVD DLC or physical vapor deposition coatings to provide solid boundary lubrication; and (3) supplying custom assembly anti-seize pastes (copper or nickel-based) with precise torque correction guidelines.
For sliding caliper guide shafts and pad hanger pins where loose fitment causes pad rattle and tight fitment causes binding, we routinely maintain shaft diameters within ISO h6 and g6 tolerance bands (±0.004mm to ±0.008mm). Pin surface roughness is centerless-ground down to Ra 0.2–0.4 µm to ensure frictionless pad backing-plate travel throughout the pad's wear life.
No. Unlike untreated carbon steel which forms aggressive galvanic couples and rusts inside wet aluminum bores, titanium rapidly regenerates an insulating, passive TiO2 dielectric film. This prevents the electrochemical voltage differential from bridging across road-spray electrolytes, entirely eliminating the pin-seizure issues common with zinc-plated steel pins.
Every production lot is provided with an EN 10204 Type 3.1 Inspection Certificate documenting the chemical composition (Al, V, Fe, C, N, H, O contents) and mechanical tensile, yield, and elongation test data traceable to the ingot melt lot. Full dimensional inspection records, salt spray test logs (upon request), and optical thread gauge verification reports are included with shipping documents.
Yes. While we stock standard metric aftermarket pins for Brembo, Nissin, Tokico, Shimano, and Hope calipers, custom OEM/ODM manufacturing represents over 60% of our production. We manufacture directly from your 2D drawings (PDF with GD&T) or 3D CAD files (STEP, IGES), accommodating custom head drives, cross-drilled safety wire eyes, circlip retainers, and integrated bleed ports.
Connect with our Baoji engineering sales desk. Submit your required thread diameters, pin lengths, surface finishes, or CAD models for an expert DFM critique and transparent factory-direct B2B quotation within 4 business hours.