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.