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Makrolon® M204 LF

Polycarbonate; MVR (300 °C/1.2 kg) 35 cm³/10 min; low viscosity; improved friction characteristics; biocompatible according to many ISO 10993-1 test requirements; available in opaque colors only

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Product Types

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Material

Plastics
Medical

General Characterization

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Storage Conditions

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Sampling

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Packaging Type

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Technical Properties & Datasheets

Product description

Polycarbonate; MVR (300 °C/1.2 kg) 35 cm³/10 min; low viscosity; improved friction characteristics; biocompatible according to many ISO 10993-1 test requirements; available in opaque colors only

Applications

Injection molding; Medical devices

Typical Values

Rheological properties

Property Test Condition Value Unit Standard
Melt Volume-flow Rate (MVR) 300 °C/ 1.2 kg 35 cm³/10min ISO 1133-1
Molding Shrinkage, parallel / normal Value range based on general practical experience 0.5 - 0.7 % b.o. ISO 2577

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

Property Test Condition Value Unit Standard
Tensile modulus 1 mm/min 2,350 MPa ISO 527-1,-2
Yield Stress 50 mm/min 62 MPa ISO 527-1,-2
Yield Strain 50 mm/min 5.8 % ISO 527-1,-2
Nominal Strain at Break 50 mm/min > 50 % ISO 527-1,-2
Flexural Modulus 2 mm/min 2,350 MPa ISO 178
Flexural Strength 2 mm/min 94 MPa ISO 178
Izod Notched Impact Strength 23 °C/ 3 mm 50 kJ/m²
Izod Notched Impact Strength -30 °C/ 3 mm 12 kJ/m² ISO 21305/based on ISO 180/A
Izod Notched Impact Strength 23 °C/ 3 mm 50 kJ/m² ISO 21305/based on ISO 180/A

Thermal properties

Property Test Condition Value Unit Standard
Temperature of Deflection under Load 0.45 MPa 135 °C ISO 75-1,-2
Temperature of Deflection under Load 1.80 MPa 121 °C ISO 75-1,-2
Vicat Softening Temperature 50 N; 120 °C/h 142 °C ISO 306
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 Behaviour 1.5 mm V-2 (COVESTRO TEST) UL 94

Other properties (23 °C)

Property Test Condition Value Unit Standard
Water Absorption (Saturation Value) Water at 23 °C 0.33 % ISO 62
Water Absorption (Equilibrium Value) 23 °C; 50 % r. h. 0.11 % ISO 62
Density 1,190 kg/m³ ISO 1183-1

Processing conditions for test specimens

Property Test Condition Value Unit Standard
Injection Molding - Melt Temperature 280 °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
Mold Temperatures 80 - 120 °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 2 - 3 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 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
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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