Makrolon® AX2675 ST

Polycarbonate; MVR (300 °C/1.2 kg) 12 cm³/10 min; medium viscosity; easy release; available in black colors only

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Technical Properties & Datasheets

Product description

Polycarbonate; MVR (300 °C/1.2 kg) 12 cm³/10 min; medium viscosity; easy release; available in black colors only

Applications

Injection molding; Automotive exterior with specified Sensor signal Transparency; High-gloss surfaces with highest requirements; For the use in combination with hard coatings; For high transmittance applications in the near-infrared range (NIR)

Typical Values

Rheological properties

Property Test Condition Value Unit Standard
Melt Volume-flow Rate (MVR) 300 °C/ 1.2 kg 12 cm³/10 min ISO 1133-1
Melt Mass-flow Rate (MFR) 300 °C/ 1.2 kg 13 g/10 min ISO 1133
Molding Shrinkage, parallel 60x60x2 mm/ 500 bar 0.70 % ISO 294-4
Molding Shrinkage, normal 60x60x2 mm/ 500 bar 0.75 % ISO 294-4
Molding Shrinkage, parallel/normal Value range based on general practical experience 0.60 - 0.80 % b.o. ISO 2577

Mechanical properties (23 °C/50 % r. h.)

Property Test Condition Value Unit Standard
Tensile modulus 1 mm/min 2,400 MPa ISO 527-1,-2
Yield Stress 50 mm/min 65 MPa ISO 527-1,-2
Yield Strain 50 mm/min 6 % ISO 527-1,-2
Nominal Strain at Break 50 mm/min > 50 % ISO 527-1,-2
Strain at Break 50 mm/min 120 % b.o. ISO 527-1,-2
Stress at Break 50 mm/min 69 MPa ISO 527-1,-2
Flexural Modulus 2 mm/min 2,400 MPa ISO 178
Flexural Strength 2 mm/min 98 MPa ISO 178
Flexural Strain at Flexural Strength 2 mm/min 7.1 % ISO 178
Flexural Stress at 3.5 % Flexural Strain 2 mm/min 74 MPa ISO 178
Izod Notched Impact Strength -30 °C/ 3 mm 14 kJ/m²
Izod Notched Impact Strength 23 °C/ 3 mm 70 kJ/m²
Izod Notched Impact Strength 23 °C/ 3 mm 70 kJ/m² ISO 21305/based on ISO 180/A
Izod Notched Impact Strength -30 °C/ 3 mm 14 kJ/m² ISO 21305/based on ISO 180/A
Charpy Notched Impact Strength -30 °C/ 3 mm 16 kJ/m²
Charpy Notched Impact Strength 23 °C/ 3 mm 70 kJ/m²
Charpy Notched Impact Strength 23 °C/ 3 mm 70 kJ/m² ISO 21305/based on ISO 179/1eA
Charpy Notched Impact Strength -30 °C/ 3 mm 16 kJ/m² ISO 21305/based on ISO 179/1eA
Puncture Impact Properties - Maximum Force -30 °C 6,100 N ISO 6603-2
Puncture Impact Properties - Maximum Force 23 °C 5,200 N ISO 6603-2
Puncture Energy -30 °C 60 J ISO 6603-2
Puncture Energy 23 °C 55 J ISO 6603-2
Ball Indentation Hardness 115 N/mm² ISO 2039-1

Thermal properties

Property Test Condition Value Unit Standard
Temperature of Deflection under Load 0.45 MPa 136 °C ISO 75-1,-2
Temperature of Deflection under Load 1.80 MPa 124 °C ISO 75-1,-2
Vicat Softening Temperature 50 N; 120 °C/h 144 °C ISO 306
Vicat Softening Temperature 50 N; 50 °C/h 143 °C ISO 306
Glass Transition Temperature 10 °C/min 143 °C ISO 11357-1,-2
Coefficient of Linear Thermal Expansion, parallel 23 to 55 °C 0.65 10⁻⁴/K ISO 11359-1,-2
Coefficient of Linear Thermal Expansion, normal 23 to 55 °C 0.65 10⁻⁴/K ISO 11359-1,-2
Burning Rate (US-FMVSS-302) >=1.0 mm PASSED ISO 3795
Thermal Conductivity, through-plane 23 °C; 50 % r. h. 0.2 W/(m·K) ISO 8302
Resistance to Heat (Ball Pressure Test) 135 °C IEC 60695-10-2
Relative Temperature Index (Tensile Impact Strength) 1.5 mm 115 °C UL 746B
Relative Temperature Index (Electric Strength) 1.5 mm 125 °C UL 746B
Application of Flame from Small Burner Method K and F/ 2.0 mm K1, F1 DIN 53438-1,-3
Flash-Ignition Temperature 480 °C ASTM D1929
Self-Ignition Temperature 550 °C ASTM D1929

Electrical properties (23 °C/50 % r. h.)

Property Test Condition Value Unit Standard
Relative Permittivity 1 MHz 3.0 IEC 60250
Relative Permittivity 100 Hz 3.1 IEC 60250
Dielectric Dissipation Factor 1 MHz 90 10⁻⁴ IEC 60250
Dielectric Dissipation Factor 100 Hz 5 10⁻⁴ IEC 60250
Volume Resistivity 1E14 Ω·m IEC 60093
Volume Resistivity 1E14 Ω·m IEC 62631-3-1
Surface Resistivity 1E16 IEC 60093
Surface Resistivity 1E16 IEC 62631-3-2
Electric Strength 1 mm 34 kV/mm IEC 60243-1
Comparative Tracking Index (CTI) Solution A 250 IEC 60112
Comparative Tracking Index (CTI M) Solution B 125 IEC 60112
Electrolytic Corrosion A1 IEC 60426

Other properties (23 °C)

Property Test Condition Value Unit Standard
Water Absorption (Saturation Value) Water at 23 °C 0.3 % ISO 62
Water Absorption (Equilibrium Value) 23 °C; 50 % r. h. 0.12 % ISO 62
Water Vapour Transmission Rate 23 °C; 85 % RH/ 100 µm film 15 g/(m²·24 h) ISO 15106-1
Density 1,200 kg/m³ ISO 1183-1
Bulk Density Pellets 660 g/cm³ ISO 60

Material specific properties

Property Test Condition Value Unit Standard
Luminous Transmittance 2 mm 89 % ISO 13468-2

Processing conditions for test specimens

Property Test Condition Value Unit Standard
Injection Molding - Melt Temperature 290 °C ISO 294
Injection Molding - Mold Temperature 80 °C ISO 294
Injection Molding - Injection Velocity 200 mm/s ISO 294

Recommended processing and drying conditions

Property Test Condition Value Unit Standard
Standard Melt Temperature 300 °C
Barrel Temperatures Nozzle 270 - 305 °C
Barrel Temperatures Front 285 - 305 °C
Barrel Temperatures Middle 270 - 290 °C
Barrel Temperatures Rear 250 - 270 °C
Mold Temperatures 70 - 110 °C
Hold Pressure (% of Injection Pressure) 50 - 75 %
Plastic Back Pressure (specific) 50 - 150 bar
Peripheral Screw Speed 0.05 - 0.2 m/s
Shot-to-Cylinder Size 30 - 70 %
Dry Air Drying Temperature 120 °C
Dry Air Drying Time 4 h
Moisture Content max. (%) ≤ 0.02 %
Vent Depth 0.025 - 0.075 mm

Health and Safety Information

Before working with this product, you must read and become familiar with the available information regarding its risks, proper use, and safe handling. This information is provided in various formats, including the current Safety Data Sheet (SDS) and product label. SDS can be accessed via the following link:

Safety Data Sheets (SDS) for Covestro products | Covestro

For further questions, please use the contact information provided on this technical data sheet.

Please note that for products manufactured in different colors, safety data may vary depending on the color variant.

Disclaimer

Responsibility and Liability

The use of Covestro products, technical assistance, and information (regardless of how provided) is outside Covestro’s control and is solely the responsibility of the customer. The customer must conduct adequate testing to determine the suitability of products for its intended use, including but not limited to technical, health, safety, and environmental aspects. Unless otherwise agreed in writing, all products are sold exclusively under Covestro’s standard conditions of sale, which prevail in case of conflict and are available upon request.
The terms and conditions of sale and delivery are available via the following link:

https://order.covestro.com/covestrostorefront/saleConditions

All information is provided “as is” without warranties, express or implied, including merchantability or fitness for a particular purpose, and is subject to change without notice. To the maximum extent permitted by law, Covestro disclaims, and the customer assumes all liability for losses, damages, or claims arising out of use of Covestro products, technical assistance, or information. Any statement or recommendation not expressly contained in Covestro documentation is unauthorized and shall not bind Covestro. Nothing herein shall be construed as encouraging or recommending the use of any product in conflict with any claim of any patent. No license is implied or in fact granted under the claims of any patent.

Restrictions on Regulated Applications

This product is not intended for use in regulated applications such as agriculture, cosmetics, drinking water contact, food contact, medical products (e.g., medical devices), toys, or similar uses subject to specific regulatory requirements. Prior written approval from Covestro is required before this product may be used in any regulated application. The customer is solely responsible for ensuring compliance with all applicable laws and determining product suitability. Covestro disclaims all liability and warranties for unauthorized regulated uses.

Typical Value

These values are provided as typical data only and do not constitute binding specifications or warranted performance, unless explicitly agreed by Covestro in writing. Performance may vary depending on factors including, but not limited to, mold/die, processing conditions and coloring/pigmentation. Unless otherwise stated, values are based on standardized test specimens at room temperature.

Sample

Samples provided by Covestro are intended solely for evaluation and testing purposes by the customer and may not be used in commercial applications, resold, transferred to third parties (except qualified testing service providers acting on behalf of the customer), reverse engineered, modified, or used in any manner not explicitly authorized in writing by Covestro. Samples are provided ‘as-is’ without any warranties, express or implied, including fitness for a particular purpose. Customers are solely responsible for ensuring safe handling, regulatory compliance, and suitability of the material for their intended evaluations. Covestro disclaims all liability for damages or losses arising from the use of samples.

Shrinkage

Shrinkage data is provided for reference only and is based on plaques molded under specific, controlled processing conditions. Actual shrinkage values in production parts may vary due to numerous factors, including but not limited to part design (e.g., size, thickness, geometry), mold design (e.g., gate type and location, runner design, mold materials, cooling system), and molding conditions (e.g., processing temperature, mold temperature, packing time and pressure, injection speed).
The determination and application of shrinkage values are the sole responsibility of the customer and must be based on their own testing and experience under actual production conditions. To the maximum extent permitted by law, Covestro shall not be liable for any damages, losses, or claims arising from the use of, or reliance on, the shrinkage data provided.

Recommended Processing and Drying Conditions

The recommended processing and drying conditions are provided for reference only and do not constitute binding specifications or warranted values. Barrel temperatures are based on a standard 3-zone barrel; other configurations may require different settings. Values for hold pressure as a percentage of injection pressure may vary depending on part geometry, injection molding machine, and injection mold. Drying conditions are specified for dry air dryers only; drying times and temperatures may differ depending on the dryer type.
Processors are solely responsible for validating and optimizing processing parameters for their specific equipment and applications. To the maximum extent permitted by law, Covestro disclaims all liability for performance outcomes or damages resulting from reliance on these recommended conditions.

Contact Information

Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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