Exablend® POK MF25 S is a polyketone with 25% mineral filler for injection-molded functional parts with high surface quality. Unlike glass-filled grades, mineral filling provides isotropic shrinkage (1.4–1.6% in both directions) — parts stay flat and surfaces remain smooth without fiber show-through.

The mechanical profile is balanced for housing applications: tensile modulus of 2500 MPa, strain at break of 10%, high unnotched impact strength (60 kJ/m²). HDT of 190 °C at 0.45 MPa.

Minimal moisture uptake and the chemical resistance of the POK matrix make it a solid choice for housings, covers, pump and valve components where PA6/POM are limited by moisture or media. Processing: melt 235–250 °C, mold 80 °C, up to 25% regrind.

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Exablend® POK GF50 S is a highly filled polyketone with 50% glass fiber for structural load-bearing parts. Tensile modulus of 17,000 MPa, tensile strength of 195 MPa, flexural strength of 220 MPa — the level of glass-filled PA66 GF50, but without its moisture dependency.

Flow-direction shrinkage of 0.1–0.3% is among the lowest in its class: the material holds tight tolerances and suits precision housings, brackets and warpage-critical parts. HDT of 205 °C at 1.8 MPa.

Minimal moisture uptake and the chemical resistance of the polyketone matrix make GF50 S an alternative to PA66 GF50 in assemblies exposed to fuel, oils and humidity. Processing: melt 235–255 °C, mold 60–90 °C (80 °C optimum), up to 25% regrind.

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Exablend® POK GF30 S is a polyketone reinforced with 30% glass fiber. A balanced structural compound: stiffness (tensile modulus of 10,000 MPa), tensile strength of 150 MPa and Izod notched impact of 13 kJ/m² — higher than most glass-filled PA6 and POM grades at comparable loading.

The main argument against PA6 GF30 is stability under humidity: the polyketone matrix absorbs almost no water, so part mechanics and geometry do not degrade in wet environments and require no conditioning. HDT of 200 °C at 1.8 MPa, low flow-direction shrinkage of 0.3–0.5%.

Chemical resistance to fuels, solvents and alkalis exceeds that of polyamides — a solid choice for pump components, valves and fuel-system parts. Processing: melt 235–250 °C, mold 80 °C, up to 25% regrind without significant property loss.

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Exablend® POK CF20 S is a 20% carbon fiber-reinforced, tribologically modified polyketone. A compound for injection-molded precision parts requiring high stiffness (tensile modulus of 12,700 MPa), dimensional stability and controlled electrical conductivity: surface resistivity of ~10³ Ω enables use in static-dissipative assemblies, including fuel-system components.

The key advantage over carbon-filled PA66 CF is moisture uptake of just 0.4% (23 °C, 50% RH): part geometry and mechanics remain stable in humid environments — critical for precision friction pairs and seals. The chemical resistance of the polyketone matrix to fuels and aggressive media completes the profile.

HDT of 213 °C at 1.8 MPa and a melting point of 220 °C support service in hot zones. Processing is standard for POK: melt 235–250 °C, mold 80 °C, pressure 80–130 MPa.

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Exablend® POK GF50 F4 — high-stiffness polyketone with 50% GF for stable structural parts

Exablend® POK GF50 F4 is a highly filled polyketone-based compound reinforced
with 50% glass fiber. The grade is intended for molded parts that require high stiffness,
low shrinkage, geometric stability and reliability in contact with technical media.

This material belongs to the group of rigid structural POK compounds, but it should not be
described through its glass fiber content alone. The strength of Exablend® POK GF50 F4 lies in
the combination of reinforcement, the polyketone matrix and controlled molding behavior. The
material is of interest for parts where stiffness must work together with chemical resistance,
wear resistance, low moisture sensitivity and dimensional repeatability in serial production.

Engineering rationale of the grade

POK GF50 F4 is worth considering for parts where a simple increase in strength no longer solves
the problem. In structural housings, support elements, precision parts or under-hood components
it is important not only to withstand the load, but also to maintain fit dimensions, retain
stiffness in a warm environment and avoid uncontrolled geometry changes after molding.

This is where the 50% glass fiber has practical significance: it increases the modulus, reduces
shrinkage, limits deformation under load and allows the polymer part to be treated as a
structural element rather than a simple substitute for a standard plastic. The polyketone matrix
adds resistance to chemical and fuel-and-oil media, which is particularly important for
automotive, industrial and precision technical assemblies.

Where the material performs best

Exablend® POK GF50 F4 makes sense where a rigid molded part with low shrinkage, a good thermal
margin and stable performance is required in a more demanding environment than dry office or
household use. It is a material for parts that must remain geometrically accurate after molding,
assembly, heating, contact with technical fluids or cyclic loading.

• structural automotive parts;
• under-hood components;
• rigid technical housings;
• electronic and electrical housing elements;
• precision gears;
• support elements of mechanisms;
• parts where metal replacement is being considered;
• assemblies operating near fuel, oils or technical fluids.

How this grade differs in engineering logic

While POK GF30 is more often chosen as a balanced reinforced material, GF50 F4 has a different
emphasis — higher stiffness, lower shrinkage and a stronger focus on structural stability.
It is a grade for cases where part deformation, deflection, fit instability or gap changes
may be more critical than maximum impact strength.

At the same time, GF50 F4 should not be perceived as a “plastic metal” without limitations. The
high glass fiber content creates anisotropy, flow-direction-dependent properties, sensitivity to
weld lines and higher demands on mold design. The material delivers the best results when it is
selected together with the part geometry, the gating scheme and the actual operating conditions.

Key advantages of Exablend® POK GF50 F4

• 50% glass fiber for high stiffness and shape stability;
• low linear shrinkage: 0.1–0.3% in the flow direction;
• flexural modulus of 11 800 MPa;
• tensile strength of 165 MPa;
• flexural strength of 214 MPa;
• HDT of 215°C at 0.45 MPa load;
• resistance to chemical and fuel-and-oil media;
• good suitability for precision molded parts with demanding geometry requirements;
• potential for metal replacement in moderately loaded parts.

Technical specifications

The main physical-mechanical and thermal characteristics are given in the table below. For this
grade it is important to assess not only strength but the whole set of parameters: the level of
reinforcement, shrinkage, flexural modulus, HDT, impact behavior and geometric stability after
molding.

Processing recommendations

Exablend® POK GF50 F4 is intended for injection molding. Due to the high glass fiber content,
mold filling, fiber orientation, injection pressure, tooling condition and cooling uniformity
must be controlled. For such materials the actual part quality is often determined not only by
the pellet properties, but also by how correctly the mold, the gating and the processing regime
are designed.

The material is supplied pre-dried, but requires moisture control after the packaging is opened.
For stable molding, drying before processing is recommended, especially if the bag has been
opened or the material has been exposed to air.

Design considerations

For parts made of POK GF50 F4, the flow direction, glass fiber orientation, weld line locations,
the difference in shrinkage along and across the flow, fillet radii, local stress concentrations
and the potentially abrasive effect of the material on tooling must all be taken into account.

This grade is well suited to applications that require a rigid, stable and chemically resistant
part, but it should be tested on the actual geometry. It is in the finished part that the effects
of reinforcement, fiber orientation, cooling regime and assembly design become visible.

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Exablend® PPS GF30S is a polyphenylene sulfide (PPS) based compound reinforced with 30 % glass fiber. It belongs to the “S” series — grades with a low spread of values around the median and high batch-to-batch consistency. It is intended for series production with tight tolerances, where reproducibility of dimensions and mechanical properties from batch to batch is critical.

The semi-crystalline PPS matrix combined with 30 % glass fiber (content 30 ± 3 %) provides a flexural modulus of 11 000 MPa, a tensile strength of 150 MPa, heat resistance of HDT/A 262 °C per ISO 75-2 (1.82 MPa), a UL 94 V-0 flammability rating at 1/16 inch, and mold shrinkage of 0.2 % longitudinal and 0.4 % transverse — batch-to-batch CoV ≤ 5 % (the key characteristic of the S series). Its electrical insulation properties meet the requirements of power electronics and high-voltage connectors.

The chemical resistance of PPS to most solvents, acids and alkalis is retained; each specific environment requires verification with regard to temperature and contact time.

Key properties

• Polyphenylene sulfide reinforced with 30 % glass fiber (30 ± 3 %)
• “S” series — one of the Exablend® PPS technology lines
• Inherent flame retardancy, UL 94 V-0 at 1.6 mm without halogenated or phosphorus flame retardants — RoHS/REACH compliant out of the box
• High heat resistance: HDT/A 262 °C per ISO 75-2 (1.82 MPa), melting point 280 °C
• Flexural modulus 11 000 MPa, tensile modulus 10 000 MPa
• Flexural strength 230 MPa, tensile strength 150 MPa
• Notched Izod impact strength 11 kJ/m², unnotched 50 kJ/m²
• Electric strength 16 kV/mm, volume resistivity 5×10¹⁵ Ω·m
• Narrow shrinkage: 0.2 % longitudinal, 0.4 % transverse — batch-to-batch CoV ≤ 5 %
• High chemical resistance to many solvents, fuels, acids and alkalis; specific environments require verification

Applications

• Automotive connectors, sensors, thermostats, fuel pumps, ignition systems
• Precision gears, bushings, bearing housings, motor housings; overmolding onto metal inserts thanks to low shrinkage
• Electronic components for lead-free reflow soldering (up to 260 °C): SMD connectors, adapters, coils, board-mounted connectors
• Series-production parts with tight tolerances and batch reproducibility requirements
• Industrial pump parts, impellers and fittings in chemical environments
• High-voltage insulators and switchgear components

Processing recommendations

Injection molding. Melt temperature 280–320 °C, mold temperature 100–140 °C (injection 80–150 °C). Pre-drying: 4 hours at 120–140 °C to a residual moisture content of ≤0.2 %. To achieve the narrow property spread of the S series, follow the recommended processing window without exceeding the upper melt temperature limit.

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Exablend® PPS GF30Y is a polyphenylene sulfide (PPS) based compound reinforced with 30 % glass fibre. It belongs to the “Y” series — balanced grades with a proven combination of properties at a moderate price. A standard working grade for parts that require high stiffness, V-0 flame resistance and heat resistance without excessive cost.

The semi-crystalline PPS matrix combined with 30 % glass fibre provides a flexural modulus of 10 370 MPa, a flexural strength of 242 MPa, a tensile strength at break of 144 MPa and a UL 94 V-0 flammability rating at 1.5 mm thickness without additional flame retardants. Low linear shrinkage of 0.11 % ensures high dimensional stability.

The chemical resistance of PPS to most solvents, acids and alkalis is retained; any specific environment should be verified taking temperature and contact time into account.

Key properties

• Polyphenylene sulfide reinforced with 30 % glass fibre
• “Y” series — one of the Exablend® PPS technology lines, designed for the standard range of series applications
• Inherent UL 94 V-0 flame resistance at 1.5 mm without halogenated or phosphorus flame retardants — RoHS/REACH compliance out of the box
• High stiffness: flexural modulus 10 370 MPa
• Flexural strength 242 MPa, tensile strength at break 144 MPa
• Notched Izod impact strength 11.3 kJ/m² at 23 °C
• Low linear shrinkage of ~0.2 % in the flow direction and ~0.5 % transverse — stable dimensional reproducibility; for precision parts, correction of shrinkage anisotropy is recommended at the tooling stage
• High chemical resistance to many solvents, fuels, acids and alkalis; any specific environment should be verified

Applications

• Electrical housings, terminals and insulators with UL 94 V-0 requirements; SMD connectors for lead-free reflow soldering up to 260 °C
• Automotive under-hood parts: sensors, pump housings, brackets
• Precision gears, bushings, load-bearing fasteners
• Pump, valve and fitting parts in chemical environments
• Power electronics and switchgear components
• High-precision relay housings

Processing recommendations

Injection molding. Barrel temperature profile: rear zone 290–310 °C, middle zone 300–320 °C, front zone 310–340 °C; melt temperature 300–340 °C. Mold temperature 130–160 °C. Injection pressure 70–130 MPa, holding pressure 40–90 MPa, back pressure 7–15 MPa. Drying before processing: 4–8 hours at 80–100 °C to a residual moisture content of ≤0.2 %.

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Exablend® PPS GF40Y is a polyphenylene sulfide (PPS) based compound reinforced with 40 % glass fiber. It belongs to the “Y” series — balanced grades with a proven combination of properties at a moderate price. It is designed for a wide range of engineering applications that require high stiffness, stable mechanical performance, heat resistance and inherent flame retardancy.

The semi-crystalline PPS matrix combined with 40 % glass fiber provides a flexural modulus of 13 600 MPa, a tensile strength of 180 MPa, heat resistance of HDT/A 260 °C per ISO 75-2 (1.8 MPa) and a UL 94 V-0 flammability rating at 1.5 mm thickness without additional flame retardants. The grade has very low moisture absorption (≤0.02 %) and high dimensional stability under long-term thermal cycling.

The chemical resistance of PPS to most solvents, acids and alkalis is retained; each specific environment requires verification with regard to temperature and contact time.

Key properties

• Polyphenylene sulfide reinforced with 40 % glass fiber
• “Y” series — the standard technology line for series-production applications
• Inherent flame retardancy, UL 94 V-0 at 1.5 mm without halogenated or phosphorus flame retardants — RoHS/REACH compliant out of the box, suitable for lead-free reflow soldering up to 260 °C
• High heat resistance: HDT/A 260 °C per ISO 75-2 (1.8 MPa)
• High stiffness: flexural modulus 13 600 MPa
• Tensile strength 180 MPa, flexural strength 230 MPa
• Notched Izod impact strength 11 kJ/m² at 23 °C
• High chemical resistance to many solvents, fuels, acids and alkalis; specific environments require verification
• Very low moisture absorption (≤0.02 %) — stable dimensions and performance in humid environments
• High dimensional stability under thermal cycling

Applications

• Electrical housings, terminals and insulators with V-0 requirements
• Automotive under-hood parts: sensors, pump housings, brackets
• Precision gears, bushings and bushing joints
• Pump, valve and fitting components in chemically aggressive environments
• High-temperature connectors and components in power electronics
• Industrial products requiring stiffness and flame retardancy at moderate cost

Processing recommendations

Injection molding. Barrel temperature profile: rear zone 310–335 °C, middle zone 310–340 °C, front zone 315–340 °C; melt temperature 280–320 °C. Mold temperature 85–140 °C. Injection pressure 50–150 MPa, holding pressure 40–90 MPa, back pressure 5–12 MPa. Pre-drying: 2–3 hours at 100–140 °C to a residual moisture content of ≤0.2 %.

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Exablend® PPS GF50K is a niche compound based on polyphenylene sulfide (PPS), reinforced with 50 % glass fiber and featuring dual stabilization: UV resistance and enhanced hydrolysis resistance. The “K” series is a line of customized Exablend® PPS compounds developed to specific customer requirements (combinations of UV stabilization, hydrolytic stability, antistatic packages, special colors, enhanced chemical resistance, etc.). The GF50K grade is a dual-stabilization configuration — UV resistance plus enhanced hydrolysis resistance — for outdoor service and contact with water or steam. It is designed for demanding structural, electrical and automotive applications where the material must withstand high temperatures, aggressive chemical environments and outdoor weathering for extended periods.

The semi-crystalline PPS matrix combined with 50 % glass fiber provides high stiffness (flexural modulus 12,000 MPa), heat resistance with an HDT/A of 280 °C per ISO 75-2 (1.8 MPa), and inherent chemical inertness to most solvents, acids and alkalis. UV stabilization and hydrolytic stability allow parts to operate outdoors and in humid environments with better property retention than standard PPS GF50; actual service life depends on time, temperature, environment and part thickness.

The material is characterized by low water absorption, high dimensional stability, minimal warpage and reduced flash formation, which simplifies the processing of precision parts.

Key properties

• Polyphenylene sulfide reinforced with 50 % glass fiber
• UV stabilization — suitable for outdoor use
• Hydrolysis resistance — for humid and aqueous environments
• High heat resistance: HDT/A 280 °C per ISO 75-2 (1.8 MPa)
• High stiffness: flexural modulus 12,000 MPa
• Flexural strength 196 MPa, tensile strength 140 MPa
• Notched Izod impact strength 14 kJ/m²
• High chemical resistance to many solvents, fuels, acids and alkalis; specific media require verification
• Low warpage, reduced flash formation
• Low water absorption, high dimensional stability

Applications

• Solar power (PV): photovoltaic module junction boxes, connector housings, mounting brackets, MC4-compatible components — UV stability is mandatory for a 25-year service life
• Outdoor telecom (4G/5G): antenna housings, base station connection modules, cable entry brackets — dimensional stability and UL 94 V-0 flame resistance in field conditions
• Outdoor IoT and street sensors: weather controller housings, cable glands, video surveillance housings — resistance to UV, rain and condensation
• Outdoor housings and parts of electrical equipment
• Automotive under-hood components exposed to thermal cycling
• E-mobility and battery system components
• Chemically resistant parts of pumps, valves and fittings
• Precision components of fluid and fuel delivery systems
• High-temperature connectors, terminals, insulators
• Parts of compressors, turbines and industrial equipment
• Outdoor components with UV stability requirements

Processing recommendations

Injection molding. Barrel temperature profile: rear zone 280–290 °C, middle zone 280–300 °C, front zone 290–310 °C; nozzle 310–320 °C; melt temperature 280–320 °C. Mold temperature 130–150 °C. Injection speed — medium to high. Drying (for bags open for more than 1 hour): 2–4 hours at 120–140 °C to a residual moisture content of 0.05 %.

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Exablend® POK M330A is an aliphatic, fully crystalline polyketone synthesized from carbon monoxide, ethylene and propylene. It is a general-purpose injection-molding grade with an MFR of ~30 g/10 min, developed for engineering parts in contact with aggressive media and under cyclic loading.

The key distinguishing feature of polyketone compared with PA6/PA66 is virtually zero water absorption (≤ 0.5 % versus 7 % for PA66 at saturation). Part dimensions and mechanical properties remain stable regardless of ambient humidity and contact with hot water.

POK M330A is positioned as a direct replacement for POM (acetal) in tribological assemblies where enhanced chemical resistance matters, and as a replacement for PA in systems in contact with fuel, coolants and glycols. Service temperature: up to 100 °C continuous, up to 130 °C short-term. Not intended for continuous service above 130 °C — for high-temperature applications consider PPS or PPA.

Key advantages

• Virtually zero water absorption — no loss of stiffness or dimensional stability in humid environments
• High resistance to fuel, diesel, glycols, brake fluids, oils, acids and alkalis
• Low coefficient of friction and wear — self-lubricating, a direct replacement for POM in gears and bushings
• Retains impact strength at temperatures down to −40 °C
• Hydrolytic resistance in hot water and steam up to 100 °C — suitable for plumbing fittings
• Fast crystallization — short molding cycle, thin-walled parts
• High environmental stress cracking resistance (ESCR) — resistant to cracking in contact with detergents

Applications

• Hot-water plumbing fittings: fittings, connectors, mixer bodies, manifold elements for underfloor heating systems
• Automotive fuel and cooling systems: fuel line connectors, pump elements, filter housings, engine cooling system fittings
• Power tools and drives: gears, bushings, guides — a direct replacement for POM with better chemical resistance
• Pumps for aggressive liquids: housings, impellers, shafts of metering and circulation pumps
• Household appliances in contact with water and steam: components of coffee machines, steam generators, dishwashers and washing machines
• Industrial packaging for aggressive media: canisters, containers, lids with seals for chemical products

The stated values are measured by in-house methods close to the corresponding ISO and GOST standards. The information is for reference only and does not constitute an official batch technical data sheet. Please request the TDS and MSDS for a specific batch before industrial use.

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