Automotive Engineering Plastics Guide: Interior, Powertrain, Lighting & Under-Hood Solutions | Jinsu Tech

ABS, with its excellent surface gloss, good processability, and cost-effectiveness, is one of the most commonly used plastic materials for automotive interior trim — dashboard trims, door handles, AC vents, center console panels, and more. Heat-resistant ABS meets automotive interior temperature requirements (Vicat ≥105°C), widely replacing more expensive PC/ABS alloys at lower cost. Jinsu offers both transparent and heat-resistant ABS series with custom color matching, Sample quantities from 25kg; bulk production MOQ aligned with project requirements.

**Recommended Grades:** • Transparent ABS — High transparency for decorative interior trim needing light transmission • Heat-Resistant ABS — Vicat ≥105°C for dashboard components near heat sources

**Automotive Compliance & Certifications:**Produced under IATF 16949-equivalent quality controls (certification in progress). All automotive ABS grades are RoHS & REACH compliant. Low-VOC and low-odor formulations available, meeting major OEM interior air quality specifications (VDA270 grade 3.0).

Glass-fiber reinforced PA6 (PA6+GF30) is the core material for under-hood components — engine covers, intake manifolds, radiator fans, cylinder head covers, and more. PA6+GF30 combines high strength (tensile ≥170 MPa), high heat resistance (HDT ≥200°C), and excellent oil resistance — making it a key metal replacement option. Compared to PA66, PA6 offers lower processing temperatures (230-280°C vs 260-300°C), less mold wear, and 20-30% lower raw material cost. Jinsu supplies both general-purpose PA6 and PA6+GF30 reinforced grades with free samples for testing.

**Recommended Grades:** • PA6+GF30 — Tensile ≥170MPa, HDT >200°C, best choice for engine covers • PA66+GF30 — Higher rigidity (flexural modulus 9000-10000 MPa) for extreme-temperature applications

**Automotive Compliance & Certifications:**PA6+GF30 grades meet LV 124 automotive electrical testing standards and have validated long-term thermal aging data per ISO 188. Hydrolysis-stabilized grades maintain >80% tensile strength retention after 1000h at 120°C/85% RH.

Polycarbonate (PC), with its ultra-high light transmission (≥88%), impact strength (Izod ≥60 kJ/m²), and heat resistance (HDT 125-135°C), has become the mainstream material for automotive headlight lenses and covers, fully replacing traditional glass. PC lenses weigh only 1/3 of glass, offer greater design freedom (complex curved surfaces), and provide better safety (no sharp fragments on breakage). Surface chemistry is optimized for adhesion with mainstream UV-curable hardcoats, preventing delamination after thermal cycling. Jinsu supplies high-transparency PC raw material with ≥88% light transmission, supporting both injection and extrusion grade requirements.

**Recommended Grades:** • Transparent PC — Light transmission ≥88%, Izod ≥60 kJ/m², for headlight lenses

**Automotive Compliance & Certifications:**Optical PC grades satisfy SAE J576/J578 weathering requirements and ECE R48 lighting regulations. Surface chemistry optimized for adhesion with mainstream UV-curable hardcoats, preventing delamination after thermal cycling.

PMMA (Acrylic), with its 92% ultra-high light transmission and excellent weatherability, holds an important position in optical-grade applications such as automotive taillight covers, DRL light guides, and dashboard transparent panels. Compared to PC, PMMA offers higher light transmission (92% vs 88%), better UV yellowing resistance, and higher surface hardness (scratch resistance), though impact strength is lower. PMMA is therefore better suited for lighting cover applications demanding high optical clarity but not primary load-bearing. Jinsu supplies high-transparency PMMA raw material for both injection and extrusion processing.

**Recommended Grades:** • PMMA — Light transmission ≥92%, for taillight covers and light guides

**Automotive Compliance & Certifications:**Optical PMMA grades meet SAE J578 color and weathering requirements, with scratch resistance validated per Taber Abrasion test method.