PA46 is a high‑performance aliphatic high‑temperature‑resistant polyamide with a melting point of approximately 295°C. Featuring high crystallinity, outstanding high‑temperature rigidity, excellent fatigue and wear resistance, good flowability and short injection‑molding cycle, it is ideal for high‑temperature, repeatedly‑stressed and thin‑wall precision injection‑molded parts. It is widely applied in automotive electronics, connectors, new‑energy equipment and transmission‑wear‑resistant components.
I. Connectors & Electrical‑Electronic Products (Core Injection‑Molding Applications)
SMT surface‑mount connectors: Board‑to‑board, wire‑to‑board, USB‑C and DDR memory connectors. It withstands 260°C lead‑free reflow soldering. Its high flowability enables the production of thin‑wall terminal bases. It delivers excellent resistance to insertion‑extraction fatigue and high weld‑line strength to avoid fracture, comparable to Envalior grades.
New‑energy vehicle high‑voltage connectors: High‑voltage connectors, terminal bases and sheaths. It sustains long‑term high temperature in engine compartments, offers vibration resistance and anti‑creep performance, and meets high‑voltage insulation requirements.
Wire harness connectors and sensor connector housings: Connectors for engine‑peripheral and chassis wire harnesses. It resists engine oil and chemicals and retains good mechanical properties under high‑temperature working conditions.
Coil bobbins, relays and miniature circuit‑breaker components: Motor winding bobbins and switch bases. High‑temperature resistance and favorable insulation performance make them suitable for mass injection‑molding production.
Comparison note: PA46 outperforms PA9T in fatigue resistance and wear resistance, yet it has higher water absorption than PA9T and is not suitable for millimeter‑wave radio‑frequency applications. It is preferred for stressed connectors with high‑temperature insertion‑extraction requirements, while LCP is the better choice for RF and high‑speed signal scenarios.
II. Injection‑Molded Parts for Automotive Engine Compartments (High‑Temperature Structural Components)
Water pump impellers, timing‑system gears and bearing retainers: Resist cyclic repeated loads and abrasion, suitable for dynamic moving parts.
Housings for turbochargers and EGR sensors, as well as starter/generator components: Maintain high rigidity under long‑term working temperatures of 150‑180 °C.
High‑temperature wire‑harness clips and fixing brackets: Vibration‑resistant and anti‑creep, free of deformation under prolonged high‑temperature exposure.
Battery‑module insulating supports and internal insulating structural parts for charging piles (halogen‑free flame‑retardant grades).
III. Precision Transmission & Wear‑Resistant Injection‑Molded Parts (Stand‑out Advantages of PA46)
High‑speed gears, sliding bearings, bushings and sliders: Inherent low‑friction and wear‑resistant properties support oil‑free lubrication. Great fatigue resistance prevents cracking under repeated operation, enabling partial replacement of metal and PPS transmission components, comparable to Envalior grades.
Internal motor transmission structures, cams and sprockets.
IV. Household Appliance & Industrial‑Equipment Injection‑Molded Parts
High‑temperature pump‑valve assemblies, heating components for coffee machines and industrial sensor housings for continuous high‑temperature service.
High‑temperature insulating structural parts for industrial control equipment.
✅ Core Injection‑Molding Advantages of PA46 from Shenzhen Youhua New Material
- Superior flowability for injection‑molding of ultra‑thin‑wall parts ranging from 0.4 mm to 0.8 mm; good mold filling reduces short‑shot defects.
- Fast crystallization rate shortens injection‑molding cycle time by 30‑40 %, boosting mold throughput and lowering manufacturing costs.
- Excellent high‑temperature fatigue and wear resistance; parts subject to repeated insertion‑extraction or reciprocating motion are less prone to cracking.
- Custom‑modifiable grades including glass‑fiber‑reinforced and halogen‑free UL94 V‑0 flame‑retardant types to satisfy automotive‑electronic safety specifications.
- Comparable physical properties to PA46 from DSM / Envalior for partial replacement with more competitive costs.
- Flexible small‑batch customization with a minimum order quantity of 1000 kg to reduce customers’ cost burden; custom color matching available.
