Consumer Electronics
📱 Smartphone Mid-Frame & Structural Chassis
Large thin-walled perimeter frame with complex internal ribbing, threaded inserts, antenna bands, and precision locator features
What is Smartphone Mid-Frame & Structural Chassis?
📱 Smartphone Mid-Frame & Structural Chassis represents a complete system of precision titanium components engineered for Consumer Electronics applications. Large thin-walled perimeter frame with complex internal ribbing, threaded inserts, antenna bands, and precision locator features The system integrates 0 distinct component types manufactured through 3 specialized processes.
Engineering & Design Principles
Material: Grade 5 (Ti-6Al-4V) offers 3x the yield strength of 6061 aluminum at similar density, enabling thinner cross-sections for lighter phones with better drop protection.
Form: Plate stock for CNC machining the complex mid-frame geometry from solid. Near-net-shape forging for higher-volume production runs.
Standards & Material Specifications
Standards: ASTM B348 Grade 5, STA condition, 100% dimensional inspection, anodized / PVD finished
Engineering Solution Blueprint
Premium Consumer Electronics & Wearables
Consumer Electronics · Other
1 Part Feature Analysis
Thin-wall (<1mm) precision stamped/CNC-machined housings, foldable phone hinge mechanisms with complex gear/pin joints, laptop unibody chassis, smartwatch case bodies, earbud charging lid hinges, camera module brackets
- ⚠️ Aesthetic surface finish (zero visible tool marks)
- ⚠️ Drop impact resistance from 1.5m+ onto hard surfaces
- ⚠️ Thermal management for high-performance SoC in enclosed body
- ⚠️ Galvanic corrosion prevention at dissimilar metal joints
- ⚠️ Signal transparency for RF/5G antenna windows
2 Material Selection Rationale
Grade 5 Ti-6Al-4V — General alpha-beta alloy, high strength
Grade 5 (Ti-6Al-4V) for foldable phone hinges and structural frames — unmatched specific stiffness for thin-wall rigidity. Beta-Ti (Ti-15V-3Cr-3Sn-3Al) for spring-loaded hinge pins requiring >1200MPa flexural fatigue life. Grade 2 for cosmetic covers requiring anodizing color consistency.
3 Form Selection Rationale
Round Bar / Rod — for turning, fasteners
MIM (metal injection molding) for complex small parts like hinge links. CNC billet machining for laptop unibodies. Precision stamping + coining for thin covers. MIM + CNC finishing for smartwatch cases.
4 Manufacturing Process & Services
Core Processes:
Toll Processing Services:
Process Pitfalls:
- ⚠️ Hinge mechanism wear life target >200,000 cycles requires DLC-coated Beta-Ti pins
- ⚠️ Unibody chassis flatness must be <0.1mm across entire surface for proper PCB seating
- ⚠️ Anodizing color consistency across batches requires tight process control (+-1 DeltaE)
5 Procurement Specifications
ASTM B348 Grade 5 / Beta-Ti per customer, PVD coated per ISO 27874, oleophobic AFP nano-coating, 100% color spectrophotometer + drop impact tested
Manufacturing Process Flow
5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the
Titanium anodizing (AMS 2488) grows a controlled oxide layer through electrochemical conversion in an electrolyte bath. Type II produces interference
Thread rolling cold-forms threads by displacing material between two reciprocating or rotary dies, rather than cutting it away. Compressive residual s
Components in This System
Frequently Asked Questions
What titanium grades are used in Smartphone Mid-Frame & Structural Chassis systems?
What manufacturing processes are used for Smartphone Mid-Frame & Structural Chassis?
What quality standards apply to Smartphone Mid-Frame & Structural Chassis components?
What industries use Smartphone Mid-Frame & Structural Chassis?
Can you provide DFM feedback for Smartphone Mid-Frame & Structural Chassis designs?
Engineering Trends
- ▸ Process: CNC milling from plate (or near-net forging)
- ▸ Process: Thread insert installation
- ▸ Process: Surface anodizing / PVD coating
Related Manufacturing Capabilities
These specialized processes support Smartphone Mid-Frame & Structural Chassis component manufacturing.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.
Certifications verified by NADCAP and compliant with ASTM International titanium standards (B265, B348, B381, F136, F2924) and ISO 13485 medical-device QMS.