SMF® Technology
SMF® is an innovative, microporous filter medium made of high-quality stainless steel.
During manufacture, an ultrafine metal powder is applied evenly to an expanded metal support and sintered at precisely controlled temperatures. During this process, the metal particles bond with each other and the support to form a solid, cohesive structure. The resulting strip material, just 0.4 mm thick, can be cut, folded and welded. It offers exceptional mechanical stability, excellent thermal resistance and outstanding durability – ideal for demanding filtration applications.
SMF® sintered metal filters are characterised by low differential pressures, high temperature resistance, long service lives and the ability to be backflushed during operation. Special coatings can also provide catalytic properties and functional surfaces. The filters are electrically conductive for explosion-protected applications, fully recyclable and thus combine the highest technical performance with a clear contribution to sustainability.
SMF® Manufacturing
Step 1: Mixing a highly alloyed metal powder with a binder
Metallpulver & Bindemittel
Step 2: Applying the powder mixture to an expanded metal support
Powder Mixture
& Expanded Metal
Step 3: Forming a solid material bond through a two-stage sintering process
Material Bonding through Sintering
Step 4: For further processing, the SMF® medium is supplied in 170 m coils with a material thickness of 0.4 mm
SMF® Coiled Strip
Material Thickness: 0.4 mm
Material Specification
Filtration Efficiency
Tests in accordance with VDI 3926 and ISO 16890 using 125 mm wide flat strip samples demonstrate filtration efficiency corresponding to class F9 according to the standards of the former EN 779 standard.
Material
SMF® Performance Characteristics
- Strip material lengths of up to 170 m available
- High design and shaping flexibility through folding, cutting, bending, welding and bonding
- Ultra-thin design with a material thickness of 0.4 mm
- 99.995% filtration efficiency
- Backflushable with air and in liquids
- Can be cleaned in the installed position during operation (in situ)
- High temperature resistance up to 800 °C / 1,500 °F (maximum temperature)
- Electrically conductive for explosion-protected applications
- Catalytic properties through coatings (functional surfaces)
- 100% recyclable
