Asahi Kasei TENAC™ 4520 POM

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.

Additional information

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

Product Overview

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.

Technical Data Sheet (TDS)

Physical Properties

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

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

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

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.

Features & Benefits

  • 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.

Applications

  1. Automotive Industry: Extensively used in manufacturing automotive door lock systems, window regulator gears, fuel pump components, interior switches, and various high-wear connection clips.

  2. Precision Machinery & Industrial Parts: Used for producing precision gears, cams, bearings, rollers, sliders, and conveyor transmission parts.

  3. Electrical & Electronics: Suitable for manufacturing electrical switches, insulation spacers, coil formers, connector housings, and various micro-transmission components.

  4. Consumer Electronics & Home Appliances: Used for high-end appliance internal transmission gears, printer/copier precision paper-feed bearings, and structural support components.

  5. 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.

Frequently Asked Questions (FAQs)

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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