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The Material "S" plus+ ® Family

The Material "S" plus+ ® Family
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The Material "S" plus+ ® Family

Product catalog summary
Introduction
Murtfeldt has been a leader in the development of advanced materials since 1958, beginning with the Material "S"® Green, which set a global standard for abrasion resistance and sliding properties, catering to the complex needs of modern production facilities.
Material "S"® plus+ Family
The "S"® plus+ Family consists of high-quality UHMW polyethylene materials designed for specific applications and high demands, offering tailored properties for various industries.
Key Products and Properties
  • "S"® plus+ ESD: Provides excellent conductivity and static discharge capabilities, suitable for explosion-risk environments, and is an economical alternative to carbon-filled PTFE, approved for the food industry.
  • "S"® plus+ Bright ESD: Combines high conductivity with bright color, ideal for clean and dust-free environments, suitable for clean-room technology and the food industry.
  • "S"® plus+ AB: Prevents bacterial and microbial growth, ideal for the food and beverage industries, offering good acoustic insulation and chemical resistance.
  • "S"® plus+ TLS: Suitable for high-temperature applications up to 120°C, with excellent wear resistance and machinability.
  • "S"® plus+ LF: Reduces sliding friction, leading to energy savings and increased machine efficiency, self-lubricating with excellent acoustic insulation.
  • "S"® plus+ FP [FS]: Metal-detectable and food-safe, designed to detect plastic particles in food production environments.
  • "S"® plus+ GB: Combines polyethylene with glass beads for a hard sliding surface, suitable for abrasive environments.
Applications
The materials are used across various industries, including automotive, semiconductor, medical, and food technology, particularly suited for environments requiring high hygiene standards, static discharge, and resistance to wear and chemicals.
Conclusion
Murtfeldt's innovative materials continue to meet the evolving demands of modern industries, providing solutions that enhance efficiency, safety, and sustainability.
Material Specifications
The document provides detailed specifications for various materials under the 'Material "S"® Family', including mechanical, thermal, electrical, and physiological characteristics.
Mechanical Properties
- Yield/Break Stress: 20 to 26 MPa depending on the material type.
- Breaking Elongation: 225% to 320%.
- Notch Impact Toughness: ≥100 to ≥170 kJ/m².
- Shore Hardness: 60 to 65 on the Shore D scale.
- Coefficient of Sliding Friction (dry): 0.1 to 0.2.
Thermal Properties
- Heat Conductivity: 0.4 W/(K × m) across all materials.
- Linear Thermal Coefficient of Expansion: Mostly 20 × 10⁻⁵ m/(m × K), with one exception at 17 × 10⁻⁵.
- Service Temperature: Short-term up to 120°C, constant up to 100°C, and lower limit at -200°C for most materials.
Electrical Properties
- Electric Strength: Generally ≥45 kV/mm, with some materials ≤45 kV/mm.
- Specific Contact Resistance: ≤10¹² to >10¹⁵ E × cm.
- Surface Resistance: ≤10¹² to >10¹⁴ E.
Physiological Properties
- FDA Approval: Most materials are approved for use in the food industry.
- EU 1935/2004 Approval: Only applicable to [FS] material.
General Information
The document also includes contact information for Murtfeldt, located in Dortmund, Germany.
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Catalog excerpts

The Material "S" plus+ ® Family-1

Die Werkstoff ”S” ®    Familie / The Material”S”  ® Platz für neue Familienmitglieder // Space for new family members

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The Material "S" plus+ ® Family-2

Murtfeldt – Innovationen für die Zukunft Murtfeldt – Innovations for the Future Mit der Entwicklung von Werkstoff ”S”® Grün setzten wir im Jahr 1958 richtungsweisende Maßstäbe. Wir wussten damals, dass die Entwicklung moderner Fertigungsanlagen künftig komplexe Anforderungen an Bauteile und deren Materialien stellen würde. So gelang es uns, ein Material zu entwickeln, das bis heute in Sachen Abriebfestigkeit und Gleiteigenschaften zum weltweiten Standard wurde. In developing the Murtfeldt Material ”S” ® green in 1958, we set a standard. We already knew at the time that the development of modern...

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The Material "S" plus+ ® Family-3

Original Material ”S” ®  Working without static Special demands are placed on materials in environments where sparks could cause explosions. Thanks to the highly conductive properties of ”S”® plus+ ESD, the material results in a complete discharge of any static load along the material surfaces and ensures a spark-free and safe working environment. The material therefore constitutes an economical alternative to carbon-filled PTFE. + Extremely good conductivity (surface resistance ≤ 104 ohm) + Static discharge at the surface in less than 0.1 seconds + Economical alternative to carbon-filled PTFE...

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The Material "S" plus+ ® Family-4

Original Material ”S” ®  Clean application Bright surfaces are essential in many working environments since dirt and dust particles must be visible so that required hygiene levels may be satisfied. Until now, it has been impossible to produce a material that meets the necessary colour requirements and also offers high conductivity. ”S” ® plus+ Bright ESD is the first bright coloured plastic to be developed that is also highly conductive, which means that electrical charges can be dissipated on earthed components. The material is ideally suited for use in areas where hygiene and anti-static properties...

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The Material "S" plus+ ® Family-5

Sterile and safe Properties Microbes (e.g. micro-organisms such as bacteria and fungi) can damage the human body. They should therefore be prevented in food production and processing. ”S”® plus+ AB contains special substances that prevent bacterial and microbial growth while simultaneously protecting people and the environment. Microbial growth on this materials surface is reduced by at least 99.96% compared with materials without additives; this prevents both unpleasant odours and the buildup of biofilm. ”S”® plus+ AB combines its antimicrobial effect with the excellent properties of the ”S”®...

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The Material "S" plus+ ® Family-6

Properties Many industrial applications take place at higher temperatures that ”S”® materials could previously not withstand. Such applications require materials that possess familiar properties such as wear resistance, high impact strength, and resistance to chemicals. Murtfeldt has now created Original Material ”S”® plus + TLS, which can be used in areas where it was previously not possible to use the ”S”® family materials. The molecular structure of this ultra-high molecular weight low-pressure polyethylene does not change even if exposed to high constant operating temperatures of 100°C or...

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The Material "S" plus+ ® Family-7

Introducing: „Low Friction" Properties Murtfeldt‘s response to international demands for lower energy consumption and sustainability: Original Material ”S”® plus+ LF. With this material, Murtfeldt has been able to further slash the sliding friction coefficient by half again. And what is outstanding here is that the value is constant and is achieved even at low friction intensities. The material drastically reduces the necessary driving forces so motors need less energy and accordingly run more economically. The new material therefore enables machines to run at higher speeds while simultaneously...

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The Material "S" plus+ ® Family-8

Original Material ”S” ®  Highest efficiency The use of this new material saves energy and – thanks to its low frictional resistance – increases the efficiency of your machines. The material reduces the sliding friction coefficient by up to 50% – thus resulting in an equivalent reduction in the energy needed for the required drive power. The material therefore offers great savings potential. Thanks to the additive used, Original Material ”S”® plus+ LF ESD is also electrically conductive and therefore allows electricity to be eliminated as quickly as possible while achieving minimum friction resistance...

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The Material "S" plus+ ® Family-9

Original Material ”S” ®  Top-quality „food protect“ Original Material ”S”  plus+ FP [FS] is a new technical plastic that completely meets the requirements of the food sector for the detectability of plastic foreign bodies in foods.
“FP” stands for “food protect” and embodies two vital properties: This product is both food-safe and metal-detectable. Metallic foreign bodies in foods are safely detected by metal detectors and removed. However, plastic particles from plant components can be problematic. Thanks to the use of additives in Original Material ”S”® plus+ FP [FS], all commonly used metal...

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The Material "S" plus+ ® Family-10

Practically no wear This material is used for applications that involve manufacturing and transportation at high pressure. The balanced quantity of micro glass beads in Material ”S”® plus+ GB provides the combined benefits of extremely high molecular weight polyethylene and glass. The glass beads that protrude from the surface give a rounded and hard sliding surface. Properties + Protects the sliding partner (unlike glass-fibre reinforced plastics) + Extremely good resistance to chemicals + Approved for use in the food industry (EU and FDA) Application areas + Guides for PET bottlenecks in the...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.