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Makroblend® M525

(PC+PBT) blend; impact modified; easy release; exceptional low-temperature impact strength, good flowability and excellent chemical resistance; manufactured according to GMP; tested only according to ISO 10993-5 and ISO 10993-10 for contact with uncompromised skin only

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About

Product Types

  • PC+PBT

Material

Plastics
Chemical resistant, Impact resistant, Medical

General Characterization

No data available

Storage Conditions

No data available

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Product description

(PC+PBT) blend; impact modified; easy release; exceptional low-temperature impact strength, good flowability and excellent chemical resistance; manufactured according to GMP; tested only according to ISO 10993-5 and ISO 10993-10 for contact with uncompromised skin only

Applications

Injection molding

Typical Values

Rheological properties

Property Test Condition Value Unit Standard
Melt Volume-flow Rate (MVR) 260 °C/ 5 kg 21 cm³/10min ISO 1133-1
Molding Shrinkage, parallel / normal Value range based on general practical experience (600bar) 0.7 - 0.9 % b.o. ISO 2577

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

Property Test Condition Value Unit Standard
Tensile modulus 1 mm/min 2,000 MPa ISO 527-1,-2
Yield Stress 50 mm/min 55 MPa ISO 527-1,-2
Yield Strain 50 mm/min 4.5 % ISO 527-1,-2
Nominal Strain at Break 50 mm/min > 50 % ISO 527-1,-2
Stress at Break 50 mm/min 45 MPa ISO 527-1,-2
Flexural Modulus 2 mm/min 2,000 MPa ISO 178
Flexural Stress at 3.5 % Flexural Strain 2 mm/min 65 MPa ISO 178
Izod Notched Impact Strength 23 °C 60 kJ/m² ISO 180/A
Izod Notched Impact Strength -20 °C 45 kJ/m² ISO 180/A

Thermal properties

Property Test Condition Value Unit Standard
Temperature of Deflection under Load 0.45 MPa 100 °C ISO 75-1,-2
Temperature of Deflection under Load 1.80 MPa 75 °C ISO 75-1,-2
Vicat Softening Temperature 50 N; 120 °C/h 122 °C ISO 306
Burning Behaviour HB UL 94

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

Property Test Condition Value Unit Standard
Volume Resistivity > 1.00E+14 Ω·m IEC 60093
Surface Resistivity > 1.00E+15 IEC 60093
Comparative Tracking Index (CTI) Solution A 225 IEC 60112
Comparative Tracking Index (CTI M) Solution B 100 IEC 60112

Other properties (23 °C)

Property Test Condition Value Unit Standard
Density 1,220 kg/m³ ISO 1183-1

Recommended processing and drying conditions

Property Test Condition Value Unit Standard
Standard Melt Temperature 260 °C
Barrel Temperatures Nozzle 255 - 270 °C
Barrel Temperatures Front 255 - 265 °C
Barrel Temperatures Middle 250 - 260 °C
Barrel Temperatures Rear 245 - 255 °C
Mold Temperatures 60 - 100 °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 110 °C
Dry Air Drying Time 2 - 4 h
Moisture Content max. (%) ≤ 0.01 %
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 on its risks, proper use, and handling. Information is available in several forms, e.g.,  in particular in the currently valid safety data sheets and product labels. For further information contact your Covestro representative.

The Product Safety First Program | Covestro

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

Disclaimer

General

The manner in which you use our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative that you test our products to determine suitability for your processing and intended uses. Your analysis must at least include testing to determine suitability from a technical, health, safety, and environmental and regulatory standpoint. Such testing has not necessarily been done by Covestro, and Covestro has not obtained any approvals or licenses for a particular use or application of the product.

Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available upon request.

All information and including technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed by you that you assume and hereby expressly release indemnify us and hold us harmless from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us. Nothing herein shall be construed as a recommendation to use any product in conflict with any claim of any patent relative to any material or its use. No license is implied or in fact granted under the claims of any patent.

Medical Grades

All products for medical applications/Baymedix® products offered by Covestro are supplied under contract containing detailed product specifications and therefore the execution of an individual written supply contract is mandatory prior to any use of a medical applications/Baymedix® product, including but not limited to production of medical devices or medicinal products.

For more information, please refer to the Guidance on the use of Covestro products in Medical Applications:

Covestro Products in a Medical Application

Sample

Any samples provided by Covestro are for testing purposes only and not for commercial use.

Typical Value

These values are typical values only. Unless explicitly agreed in written form, they do not constitute a binding material specification or warranted values. Values may be affected by the design of the mold/die, the processing conditions and coloring/pigmentation of the product. Unless specified to the contrary, the property values given have been established on standardized test specimens at room temperature.

Shrinkage

Shrinkage data is provided as a reference only, and is based on sample plaques molded under specific, controlled processing conditions. Shrinkage rates in production parts can vary and are influenced by several variables such as, but not limited to: part design (e.g. part size, thickness and geometry), mold design (e.g. gate type and location, runner design, mold materials, cooling system), molding conditions (e.g. processing temperature, mold temperature, packing time and pressure, injection speed).

We suggest materials be evaluated in existing applicable molds to achieve the most accurate shrinkage estimation for your specific application and processing practices. The final choice of shrinkage is the responsibility of the user of the material, and should be made based on your experience and testing results. We shall not be liable for any damage caused by the use of the shrinkage data as provided by us. If you have any questions, pls consult technical representatives from Covestro.

Contact

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

Downloads

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

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