AS Formosa Plastics Ningbo NX3400
AS Formosa Plastics Ningbo NX3400
Product Introduction AS Ningbo Formosa Plastics NX3400 is a heat‑resistant grade acrylonitrile‑styrene copolymer (SAN) resin. It features high transparency, good rigidity, chemical resistance and excellent processability.
Main Applications
Household Appliances: TV bases, refrigerator components, cassette cases, air‑conditioner parts, etc.
Electronic & Electrical Appliances: Electrical sockets, housings, instrument casings, dashboards, battery boxes, storage‑battery enclosures, junction boxes, various switches and push‑buttons.
Automotive Industry: Automotive components including head‑lamp housings, rear‑view mirror housings and instrument panels.
Daily‑use & Consumer Goods: Tableware, food‑grade cutlery, cosmetic packaging, toys, stationery, packaging containers, lamp shades and building‑material products such as decorative panels.
Industrial Components: Tractor fuel tanks, oil‑resistant mechanical parts.
Other Applications: Also applied in sports equipment, lighting fixtures and other fields.
Performance Parameters
| Property Category | Test Item | Typical Value | Test Condition / Standard |
|---|---|---|---|
| Physical Properties | Density | 1.07‑1.10 g/cm³ | ASTM D792 |
| Melt Flow Rate (MFR) | 1.0‑1.1 g/10min | 200°C / 5 kg, ASTM D1238 | |
| Molding Shrinkage | 0.2‑0.7 % | ASTM D955 | |
| Mechanical Properties | Tensile Strength | 78‑83 MPa or 853 kg/cm² | ASTM D638 |
| Flexural Strength | 118‑1210 kg/cm² or 118 MPa | ASTM D790 | |
| Flexural Modulus | 3620‑3800 MPa or 3.8×10⁴ kg/cm² | ASTM D790 | |
| Izod Notched Impact Strength | 1.8 kg·cm/cm or 1.8 J/m | ASTM D256, 1/4" thickness | |
| Rockwell Hardness (R‑Scale) | 85‑121 | ASTM D785 | |
| Thermal Properties | Heat‑Deflection Temperature (HDT) | 91‑93 °C | ASTM D648, 1.82 MPa (18.5 kg/cm²), un‑annealed |
| Vicat Softening Temperature | Approx. 110 °C | ‑ | |
| Other Properties | Flammability (UL 94) | HB (1.6 mm / 3.2 mm / 1/16") | UL 94 |
| Black Specks | 1 piece / 5g | Formosa Plastics internal standard |
Injection‑Molding Parameters
| Process Parameter | Reference Range | Remarks & Instructions |
|---|---|---|
| Drying Treatment | 80℃, 2‑4 hours | AS resin is hygroscopic. Sufficient drying is required (moisture content below 0.1% recommended), otherwise silver streaks and bubbles may occur on finished‑part surfaces. |
| Barrel Temperature | 200‑250℃ | Slightly lower temperature is recommended for thick‑wall products to prevent material degradation. |
| Mold Temperature | 40‑80℃ | 50‑60°C for high‑precision parts; 60‑80°C for high‑gloss and high‑heat‑resistance requirements. Mold temperature directly affects appearance, shrinkage and warpage. |
| Injection Pressure | 350‑1300 bar | Adjust according to flow length and product structure. AS has slightly lower flowability than PS, so relatively higher injection pressure is needed. |
| Injection Speed | High‑speed injection | Beneficial for good surface gloss, color performance and minimizing weld‑lines. |
| Back Pressure | Moderate setting | Promotes uniform plasticization and degassing. |
Note: All data above is for reference only.
