Asahi Kasei TENAC 4520 is a high-quality copolymer polyoxymethylene (POM) resin engineered for exceptional wear resistance, high mechanical strength, and superior dimensional stability in industrial applications.
| Manufacturer | Asahi Kasei |
|---|---|
| Density | 1.41 g/cm³ |
| MFR | 9 g/10 min |
| Tensile Strength at Yield | 63 MPa |
| Elongation at Break | 35 % |
Note: See the product description for additional technical specifications
Asahi Kasei TENAC™ 4520 is a high-performance copolymer polyoxymethylene (POM Copolymer) plastic raw material manufactured by Asahi Kasei Corporation. Supplied in the form of standard cylindrical pellets, it features excellent mechanical strength, superior wear resistance, and outstanding long-term dimensional stability, making it a highly regarded premium copolymer POM grade in the global engineering plastics market.
As a professional global engineering plastics supplier, ZiJun Plastics is committed to providing global manufacturers and processing enterprises with genuine, original-factory Asahi Kasei TENAC 4520 POM raw materials, complete with official technical documentation to fully support sample requests and bulk cross-border trade orders. Backed by its well-balanced physical, mechanical, and thermal properties, this grade is widely applied in automotive components, electrical and electronics, precision mechanical gears, and various industrial wear-resistant structural parts.
| Physical Properties | Testing Value | Testing Unit | Test Standard |
| Density | 1.41 | g/cm³ | ASTM D792ISO 1183 |
| Melt Flow Rate, Mass190 °C, 2.16 kg | 9 | g/10 min | ISO 1183 |
| Mold Shrinkage, Parallel | 1.6-2.0 | % | Internal Method |
| Water Absorption50% RH 0, 24 h, 23 °C | 0.2 | % | ASTM D570 |
| Rockwell Hardness M | 80 | — | ASTM D785 |
| Rockwell Hardness R | 115 | — | ASTM D785 |
| Mechanical Properties | Testing Value | Testing Unit | Test Standard |
| Tensile Modulus | 2700 | MPa | ISO 527-1 |
| Tensile Strength, Yield | 63 | MPa | ISO 527-2 |
| Tensile Strength | 63 | MPa | ASTM D638 |
|
Tensile Strain, Break
|
35 | % | ASTM D638 |
| 35 | % | ISO 527-2 | |
|
Flexural Modulus
|
2550 | MPa | ASTM D790 |
| 2500 | MPa | ISO 178 | |
| Flexural Strength | 90 | MPa | ASTM D790 |
| Taber Abrasion Resistance | 14 | mg | ASTM D1044 |
| Charpy Impact Strength, Notched | 7 | kJ/m² | ISO 179 |
| Izod Impact Strength, Notched | 77 | J/m | ASTM D256 |
| Thermal Properties | Testing Value | Testing Unit | Test Standard |
|
Deflection Temperature Under Load, Unannealed0.45 MPa
|
158 | °C | ASTM D648 |
| 156 | °C | ISO 75-2/B | |
|
Deflection Temperature Under Load, Unannealed1.8 MPa
|
110 | °C | ASTM D648 |
| 100 | °C | ISO 75-2/A | |
| Coefficient of Linear Thermal Expansion (CTE), Parallel | 1.00E-04 | cm/cm/°C | ASTM D696ISO 11359-2 |
| Specific Heat | 1470 | J/kg/°C | — |
| Thermal Conductivity | 0.23 | W/m/K | — |
| Flame Rating0.75 mm | HB | — | UL 94 |
| Flame Rating1.5 mm | HB | — | UL 94 |
| Electrical Properties | Testing Value | Testing Unit | Test Standard |
| Surface Resistivity | 1.0E+16-1.0E+17 | ohms | ASTM D257 |
| Volume Resistivity23 °C | 1.0E+15-1.0E+16 | ohms · cm | ASTM D257 |
| Dielectric Strength | 19 | kV/mm | ASTM D149 |
| Dielectric Constant23 °C, 1 MHz | 3.9 | — | ASTM D150 |
| Dissipation Factor23 °C, 1 MHz | 8.00E-03 | — | ASTM D150 |
| Tracking Resistance (CTI) | 250 | sec | ASTM D495 |
The technical data sheet (TDS) of Asahi Kasei TENAC™ 4520 POM, Copolymer material from Asahi Kasei Corporation corporation, if there are differences, please refer to the official website of Asahi Kasei Corporation.
Exceptional Wear & Low Friction Performance: The copolymer POM structure provides outstanding self-lubricating properties and an extremely low coefficient of friction, significantly reducing wear and noise in moving mechanical components.
Outstanding Mechanical Strength & Rigidity: Featuring a high tensile modulus (2700 MPa) and high flexural strength, it can withstand heavy loads under operation without permanent deformation.
Superior Fatigue & Creep Resistance: Demonstrates exceptionally high fatigue strength under long-term alternating loads, ensuring the long-term stability of precision mechanical structures.
Good Processing Flowability: With a moderate melt flow rate (9 g/10 min), it offers an excellent injection molding processing window, making it suitable for manufacturing complex shapes and thin-walled precision components.
Superior Dimensional Stability: Low water absorption and minimal sensitivity to environmental temperature and humidity ensure precise tolerance fits for high-precision parts under demanding operating conditions.
Automotive Industry: Extensively used in manufacturing automotive door lock systems, window regulator gears, fuel pump components, interior switches, and various high-wear connection clips.
Precision Machinery & Industrial Parts: Used for producing precision gears, cams, bearings, rollers, sliders, and conveyor transmission parts.
Electrical & Electronics: Suitable for manufacturing electrical switches, insulation spacers, coil formers, connector housings, and various micro-transmission components.
Consumer Electronics & Home Appliances: Used for high-end appliance internal transmission gears, printer/copier precision paper-feed bearings, and structural support components.
General Hardware & Auxiliary Medical Parts: Such as zipper teeth, high-end furniture slide rail assemblies, and auxiliary structural components for medical devices without strict sterile requirements.
Q1: Is pre-drying required before processing Asahi Kasei TENAC 4520 POM? What are the recommended drying parameters?
A: Although POM resin has relatively low hygroscopicity, pre-drying is recommended to prevent surface silver streaks, bubbles, or mechanical property reduction during injection molding. Recommended drying conditions: hot air circulation drying at 80°C to 90°C for 3 to 4 hours.
Q2: What are the main advantages of copolymer POM (such as TENAC 4520) compared to homopolymer POM?
A: Compared to homopolymer POM, copolymer POM offers better thermal stability, enhanced chemical corrosion resistance (stronger resistance to alkalis and hydrolysis), and is less prone to local overheating and decomposition that releases formaldehyde gas during processing, resulting in a broader thermoplastic molding window and longer mold service life.
Q3: Does Asahi Kasei TENAC 4520 POM meet relevant environmental and compliance certification requirements?
A: Yes. This original grade complies with major global environmental and compliance standards, typically meeting EU chemical control directives such as RoHS and REACH. We can provide original Certificates of Analysis (COA), Technical Data Sheets (TDS), and Material Safety Data Sheets (MSDS) upon shipment to assist customers with overseas export and compliance declarations.
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