Blanket
MLS 96 kg/m³ · 6 / 12.5 / 25 mm · 610 mm wide
Maftec ® | High-temperature ceramic fiber mat up to 1600°C
MAFTEC Blanket is a high-quality ceramic fiber insulation blanket made from pure mullite fiber, designed for extreme temperatures up to 1600°C.
It combines excellent thermal insulation, low shrinkage, and exceptional chemical stability—perfect for industrial applications in furnace construction, chemical processing, or metalworking.
- Thickness (mm)
- 6mm | 12.5mm | 25mm
- Density / volume weight (kg / m³)
- 96 kg / m³ | 128 kg / m³
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Refractory · Category 01
MAFTEC
™ MLS BlanketPolycrystalline mullite ceramic fibre.
The most advanced cladding and module solution for CGL, CAL and rolling-mill furnaces up to 1,600 °C.Made from pure mullite (Al₂O₃ : SiO₂ = 72 : 28, Al₂O₃ + SiO₂ ≥ 99.9 % by ICP-AES). Shrinkage < 1 % at 1,400 °C × 24 h, practically no shot, practically no WHO fibres — the result: less damage to steel sheets, more stable production, longer campaign life.
● In stock Erl · 24 h AT01 · What MAFTEC isPolycrystalline.
Not RCF.Classic refractory ceramic fibres (RCF) shrink significantly in continuous operation — because they are amorphous and re-crystallise under heat.
MAFTEC is already crystalline. What is not amorphous cannot re-crystallise. The result: dimensionally stable — for years.
01Pure mullite3 Al₂O₃ · 2 SiO₂ — polycrystalline, not amorphous like classic RCF. Stable mullite structure up to 1,600 °C, no phase change below 1,595 °C (Al₂O₃–SiO₂ eutectic).02No boron binderUnlike alumina fabrics, no boron evaporates from MAFTEC. No embrittlement, no deposits on cooling sections.03NonwovenFleece structure instead of weave — retains shape and spring-back even without sizing agents.Phase diagram Al₂O₃ – SiO₂MAFTEC sits in the green field — pure mullite.
At 70–74 % Al₂O₃ the fibre reaches the composition of pure mullite. Other alumina and ceramic fibres sit in mixed phases — under heat, mullite + cristobalite or corundum + mullite appear simultaneously. This is the fundamental reason for RCF shrinkage.
Schematic · equilibrium phase diagram Al₂O₃ – SiO₂02 · Performance comparisonWhere MAFTEC beats
the alumina competition.Measured against MAFTEC MLS 96 kg/m³ 25 mm, directly compared with three anonymised alumina-fibre competitors. Source: Mitsubishi Chemical, internal test series 2023.
Shrinkage at 1,400 °C — endurance testMAFTEC remains dimensionally stable.
Shot content (particles ≥ 45 µm)Clearly below competition.
MAFTEC ≤ 0.1 %Competitor 1 6.62 %Competitor 2 1.2 %RCF typ. 4.5 %Shot particles scratch thin steel sheets and fall into the product as contamination.03 · Product formsReal product photography.
MAFTEC ships in four construction forms. Blanket and Bulk shown here — Module, Board and Felt photos follow.
BulkLoose polycrystalline fibre — filling, shaping, reinforcementModule160 – 190 kg/m³ · 150 / 200 / 300 mm — photo pendingFelt20 – 50 kg/m³ · 6 / 10 / 15 mm — photo pendingPhotos: MAFTEC blanket render (SENN Gruppe · product archive) · bulk from MAFTEC Co. catalogue (Mitsubishi Chemical, 2022). MAFTEC™ is a registered trademark of Mitsubishi Chemical Corporation.
03 · ApplicationsWhere MAFTEC runs at our customers.
Hot-dip galvanizing linesCGL · Continuous Galvanizing Line
Low emissivity reduces heat radiation on the steel strips. MAFTEC cladding replaces old fibre-mat systems — faster temperature changes possible.
Annealing linesCAL · Continuous Annealing Line
Direct-fired zones: MAFTEC modules as burner-proximity refractory. Practically no WHO fibres — clearable under REACH and TRGS.
Steel · aluminium · non-ferrousRolling & annealing furnaces
Walking-beam and pusher furnaces. Full lining as MAFTEC blanket layer or as module. Campaign-life extension vs chamotte typically 3–5×.
04 · Construction formsOne fibre. Four assemblies.
MAFTEC delivers the same fibre quality in four constructions — we help choose the right one by furnace type, temperature and installation.
BLKBlanketDensity96 / 128 kg/m³Thickness6 / 12.5 / 25 mmFlexible lining, repairs, zone replacementsMODModuleDensity160 – 190 kg/m³Thickness150 / 200 / 300 mmHigh-temperature zones, direct burner proximityBRDBoardDensity280 – 360 kg/m³Thickness25 / 50 mmStructural walls, covers, door liningFLTFeltDensity20 – 50 kg/m³Thickness6 / 10 / 15 mmSeals, back-up layer, expansion joints05 · Workplace safety & complianceNot respirable.
That is measurable.MAFTEC produces practically no WHO fibres (fibre diameter < 3 µm, length > 5 µm, ratio ≥ 3:1). The fibre is therefore not classified as CMR — unlike classic RCF/AES fibre under TRGS 619.
Fibre-diameter distribution5 – 7 µmØ diameter MAFTECpractically 0 %WHO-fibre fraction> 3 µmpractically all fibresREACH-compliantNo SVHC substances. Documented safety data sheet DE/EN/FR is included with every delivery.TRGS 619 / 521MAFTEC is not a "biopersistent fibre" under TRGS. No protective-group requirement, no CMR classification needed.06 · What SENN addsWe do not just sell the mat.
01Technical engineeringCladding design based on furnace geometry. Thickness, density, layer build-up — in coordination with your refractory engineer.Reaction 24 – 72 h02Installation supervisionOn-site briefing of your installation team — or full execution by our partner (DE / AT / CH / IT).Reaction from 1 day03Stock holdingStandard rolls and modules in stock Erl (Tyrol) and Nuremberg. Production-near positioning.Reaction 24 h AT · 72 h EU04Training & safetyTRGS and REACH briefing for your maintenance team. Protective-clothing package optional.Reaction includedNext stepWhich furnace is up?
Send us the furnace type, operating temperature and desired campaign interval — we respond on working days with a design proposal and quote.
Or directly by email: info@senn-gruppe.comWhat we need from you●Furnace typeWalking-beam, pusher, CGL, CAL, annealing, heating furnaces●Max. operating temperature°C — including peak spikes●Zone geometryDrawing / sketch is enough●Target campaign lifeYears or campaign duration●Existing liningMaterial + build-up, if knownMAFTEC™ is a registered trademark of Mitsubishi Chemical Corporation. SENN Gruppe is an authorised distributor for Austria, Germany and the EU. Product properties per MAFTEC™ datasheet (MAFTEC Co., Ltd., Mar. 2022, No. EN20220301-A) · comparison values per Mitsubishi Chemical internal test series 2023. -
Senn Group Information Catalog
Refractories, seals, foundry supplies, conveyor chains, compensators, plain bearings, lubricants, metal parts, and logistics/FTL
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Since 2001, KS Kneissl & Senn Technologie GmbH
has been producing insulation materials and seals for a wide range of applications up to a temperature range of 1600 °C. A diverse range of machinery (CNC 5-axis milling, plotting, punching, sewing, water jet cutting, vacuum forming, etc.) enables us to shape a wide variety of materials for you. The main materials include: glass fibers, aramid fibers, mineral fibers, biosoluble fibers, ceramic fibers, silicate fibers, vermiculite, calcium silicate, microporous materials, elastomers (rubber, silicone, silicone foam, etc.), etc.
The company has been ISO9001 certified since 2009, currently in accordance with the 2015 revision of the standard.
