Comprehensive Technical Support Services in Engineering Plastics
FAQ
Basic Concepts and Classification
Plastic is a polymer-based material that offers advantages such as low
weight, chemical resistance, and cost efficiency. Engineering plastics
and high-performance plastics such as PA, POM, PEEK, PET, and PTFE
provide reliable solutions for critical applications requiring high
mechanical strength and wear resistance.
General-purpose industrial plastics are materials that offer a balance
between cost and performance. Engineering plastics, such as PA, POM, and
PEEK, are preferred for applications requiring high mechanical strength
and wear resistance.
Technical plastics are specialized materials designed to meet specific
strength and machinability requirements in industrial applications. They
are widely used in machine manufacturing, conveyor systems, and
packaging machinery.
Engineering plastics are specialized materials used in technical
applications requiring high mechanical strength and wear resistance.
Engineering plastics such as PA (Polyamide), POM, and PEEK provide
long-lasting and reliable performance in machine manufacturing, conveyor
systems, and packaging machinery.
Plastic materials consist of polymer resin, performance-enhancing
additives, and reinforcement elements such as fibers. In engineering
plastics such as PA (Polyamide), POM, and PEEK, these components are
critical factors that determine service life by providing high
mechanical strength and wear resistance.
Thermoplastics, including CNC-machinable engineering plastics such as PA
(Polyamide), POM, and PEEK, can be reshaped when heated. Thermoset
plastics cannot be reshaped after curing and are mainly preferred for
fixed applications requiring high form stability.
Plastics can be identified based on their response to heat, burning and
odor characteristics, and the chip formation generated during machining.
Engineering plastics such as PA (Polyamide), POM, PET, PE, PP, PEEK, and
PPS can also be distinguished in the field by their machining behavior,
surface quality, and mechanical properties.
Semi-crystalline plastics offer high mechanical strength and wear
resistance due to their ordered molecular structure. PA, POM, PET, PE,
and PEEK are examples of this group. Amorphous plastics provide better
dimensional stability and surface quality due to their disordered
molecular structure. PC, PSU, and PPSU belong to this category.
Unreinforced plastics offer higher flexibility and good machinability,
whereas reinforced grades provide increased rigidity through fiber
reinforcement. Engineering plastics such as PA (Polyamide), POM, and
PEEK are available in both forms to meet industrial requirements
involving high mechanical strength and wear resistance.
Fiber-reinforced plastics provide metal-like mechanical strength and
rigidity through fiber reinforcement. Glass-reinforced PA (Polyamide)
and carbon-reinforced PEEK deliver superior performance in load-bearing
industrial systems.
Plastic Material Selection and Decision Guide
The right plastic material should be selected according to the operating
temperature, mechanical load, and chemical conditions. Choosing the
correct material from engineering and high-performance plastics such as
PA (Polyamide), PET, POM, PVDF, and PEEK improves component life and
system efficiency.
The choice between plastic and metal should be based on operating
conditions such as temperature, load, and chemical exposure. Engineering
plastics such as PA (Polyamide), POM, and PEEK can provide lightweight,
corrosion-resistant, and maintenance-free alternatives to metal.
Incorrect plastic selection can lead to premature wear, deformation, and
unplanned production downtime. Selecting the right engineering plastics,
such as PA (Polyamide), POM, PET, and PEEK, helps reduce maintenance and
operating costs.
Mechanical strength, temperature resistance, and chemical resistance
should be evaluated when selecting a plastic. Choosing a material with
the appropriate technical properties from engineering plastics such as
PA (Polyamide), POM, PET, and PEEK, improves system reliability and
component life.
Selecting the correct replacement plastic can reduce total operating
costs by accelerating production and extending component life.
Engineering plastics such as PA (Polyamide), POM, and PEEK can provide
more economical and efficient alternatives to metal in suitable
applications.
High-performance plastics are specialized materials that retain their
properties under high temperatures, chemical exposure, and mechanical
loads. Depending on the application, high-performance plastics such as
PEEK, PTFE, PAI, PI, and PBI can be safely used at temperatures above
200°C.
Material-Based Properties
PVC is a durable, electrically insulating, and cost-effective
thermoplastic widely used in low-temperature chemical applications such
as pipes, tanks, and cable insulation.
PA is a thermoplastic that offers high strength, wear resistance, and
low friction. Although it absorbs moisture, its impact resistance makes
it widely suitable for gears, bushings, and moving machine components.
Compared with PA6, PA66 offers higher strength, better heat resistance,
and lower moisture absorption, whereas PA6 provides higher impact
resistance, better processability, and greater toughness.
PEI is a high-performance thermoplastic that offers high-temperature
resistance, strength, and dimensional stability. Its electrical
insulation and flame-retardant properties make it suitable for sensitive
electronic and industrial components.
POM is a hard and machinable thermoplastic that is preferred as an
alternative to metal in precision components such as gears, bushings,
and bearings due to its low friction, wear resistance, and dimensional
stability.
With its dimensional stability, low friction, and wear resistance, POM
is ideal for gears and bushings. Its low moisture absorption enables it
to maintain its shape and deliver long-term performance under demanding
conditions.
POM-H is preferred for heavily loaded components due to its high
strength and hardness, whereas POM-C is preferred in food and medical
applications because of its chemical resistance and resistance to hot
water.
PEEK is a high-performance engineering plastic that can replace metal in
certain applications due to its high-temperature, chemical, and
mechanical resistance. It delivers superior performance under demanding
operating conditions.
PP is a thermoplastic preferred for tanks, process equipment, and
laboratory applications due to its low density, good chemical
resistance, and cost-effectiveness. It is suitable for
moderate-temperature applications.
PP is an ideal thermoplastic for applications requiring moderate
mechanical and temperature performance in industries such as chemical
processing, food, automotive, and construction, thanks to its chemical
resistance, low weight, and cost-effectiveness.
PET is an engineering plastic used in technical and electrical
components requiring high rigidity, dimensional stability, and low
moisture absorption.
Composite materials are formed by combining different materials to
achieve high strength and low weight.
Epoxy composites are used in various sectors because they provide high
mechanical strength and dimensional stability.
Reinforced fiber materials combine low weight, high rigidity, and
strength. They are used in the automotive, aerospace, energy, and
machine-manufacturing industries.
PVDF is a fluoropolymer preferred for chemical fluid handling and
high-purity process applications due to its high chemical resistance,
low permeability, and reliable performance.
PE is a versatile engineering plastic used in food-processing equipment
and chemical applications due to its impact resistance, chemical
resistance, low moisture absorption, and low friction. It is available
in grades such as PE300, PE500, and PE1000.
PTFE is a high-performance fluoropolymer used in seals, bearings, and
chemical process applications due to its extremely low friction,
excellent chemical resistance, and wide operating temperature range.
PTFE sheet is a plastic material capable of withstanding high
temperatures. However, in applications involving mechanical loads,
temperature resistance and mechanical strength must be evaluated
together.
Cast PA is an engineering plastic that offers high mechanical strength
and wear resistance. Compared with standard PA (Polyamide), it is more
advantageous for large-sized machine components and parts subjected to
heavy mechanical loads.
PI (Polyimide) and PBI (Polybenzimidazole) are high-performance plastics
used at very high temperatures. PEEK, PTFE, PAI, PI, and PBI are
preferred in critical applications in the aerospace, semiconductor, and
glass industries that require high mechanical strength and wear
resistance.
UHMW-PE (PE1000) is an engineering plastic preferred for conveyors,
sliding surfaces, and wear components due to its extremely high wear and
impact resistance, low friction, and self-lubricating properties.
UHMW-PE (PE1000) offers superior wear, impact, and friction resistance
compared with HDPE (PE300). HDPE is more suitable for economical and
lightweight applications, whereas UHMW-PE is ideal for systems exposed
to intensive friction.
PA offers high impact resistance and load capacity, making it suitable
for dynamic applications; however, it absorbs moisture. POM, with its
low friction and dimensionally stable structure that is less affected by
moisture, is more suitable for precision sliding components.
PTFE stands out with its excellent heat and chemical resistance but is
more prone to deformation under load. PEEK is more suitable for
load-bearing applications because it retains its mechanical strength at
high temperatures.
PAI is a high-end amorphous high-performance plastic capable of
withstanding extreme temperatures . With its superior wear and fatigue
resistance, it provides high mechanical strength and wear resistance in
critical components such as unlubricated bearings, bushings, and valves.
PPS is a high-performance plastic known for its high-temperature and
chemical resistance. It is preferred in the automotive, chemical,
electrical and electronics, and energy industries for applications
requiring high mechanical strength and wear resistance.
PVDF is a high-performance plastic known for its high chemical
resistance and low permeability. It provides reliable solutions in
valves, pumps, and piping systems used in the chemical, pharmaceutical,
water-treatment, and energy industries, where high mechanical strength
and wear resistance are required.
PSU is a stable technical plastic used in medical devices, hot-water
systems, and electronic housings due to its high-temperature and
hydrolysis resistance, transparent structure, and sterilization
compatibility.
PUR is a versatile technical plastic that offers high elasticity and
wear resistance. It is widely used in conveyor systems, machine
components, and impact-absorbing applications.
Physical-Mechanical-Thermal Properties
The glass transition temperature, or Tg, is the point at which a plastic
transitions from a rigid state to a more flexible state.
High-performance plastics such as PEEK and PAI remain stable due to
their high Tg values, while this value must be carefully evaluated in
engineering plastics such as PA and POM to ensure high mechanical
strength.
The melting point is the temperature at which a plastic begins to melt,
whereas the operating temperature is the temperature range in which it
can be used safely. Material selection for high-performance plastics
such as PEEK and PEI, as well as engineering plastics such as PA and
POM, should be based on the operating temperature.
UHMW-PE, POM, and Cast PA are among the plastics with high wear
resistance. Under high temperatures and mechanical loads, PEEK and PAI
are more prominent.
PTFE is one of the plastics with the highest chemical resistance. PVDF
and PEEK may be preferred when mechanical strength is also required.
PBI and PI are among the plastics capable of withstanding the highest
temperatures. In industrial applications, PEEK, PAI, and PPS provide
balanced solutions for high-temperature service.
POM, PET, PEEK, and PAI are among the plastics suitable for
high-compression applications. Materials with high creep resistance
should be selected for long-term exposure to pressure.
PET, PEI, PSU, and PEEK are among the plastics with excellent electrical
insulation properties. High-performance plastics should be preferred for
applications operating at elevated temperatures.
Thermal expansion is the dimensional change that occurs in a plastic as
a result of temperature variations. When selecting engineering plastics
such as PA (Polyamide) and POM, or high-performance plastics such as
PEEK the coefficient of thermal expansion must be considered to ensure
dimensional stability.
UHMW-PE, PC, and PA are among the plastics with high impact resistance.
These plastics provide reliable performance under low-temperature and
demanding operating conditions.
Plastic density is the mass per unit volume that influences the
material’s weight and mechanical characteristics. Engineering and
high-performance plastics such as POM, PEEK, and PAI can provide high
mechanical strength and wear resistance; however, their density must be
evaluated as part of the overall material selection.
The coefficient of friction determines a plastic’s wear and sliding
performance. Engineering plastics such as POM, PTFE, and PEEK provide
longer service life through low friction, together with high mechanical
strength and wear resistance.
Moisture absorption refers to the uptake of moisture by a plastic, which
can alter its dimensional stability and mechanical performance.
Dimensional tolerances may change in moisture-absorbing materials such
as PA (Polyamide), whereas engineering plastics such as POM, PEEK, and
PPS offer more stable performance due to their low moisture absorption.
Tensile strength is the maximum stress a plastic can withstand before
failure. Engineering plastics such as PA (Polyamide), POM, PEEK, and PAI
can be safely used in components requiring high mechanical strength and
wear resistance due to their high tensile strength.
Plastic materials may gradually deform when subjected to continuous
loads. Engineering and high-performance plastics such as POM, PA
(Polyamide), PEEK, PPS, and PAI help reduce this effect and provide
extended service life.
Plastics intended for outdoor use should be resistant to UV radiation,
moisture, and temperature fluctuations. PE, UHMW-PE, PVDF, and PEEK are
among the materials suitable for such applications.
UHMW-PE, PVDF, and PTFE are among the plastics with good seawater
resistance. PEEK may be preferred when mechanical loads are also
present.
Freezing and thawing can cause cracking and dimensional changes in
certain plastics. PEEK and other engineering plastics designed for
low-temperature service provide more reliable performance under these
conditions.
Sectoral Application Areas
Engineering plastics such as PA, POM, PPS, PC, and PEEK are widely used
in the automotive industry. Material selection depends on the
temperature, load, and friction conditions of the component.
Plastics such as PEEK, PEI, PSU, and UHMW-PE are preferred in medical
devices and moving components due to their biocompatibility,
sterilization resistance, and dimensional stability.
POM, PA, Cast PA, PET, and UHMW-PE are among the most frequently used
materials in machine manufacturing. PEEK and PAI are preferred for more
demanding operating conditions.
PA, PE, UHMW-PE, and POM are widely used in agricultural machinery.
Engineering plastics that provide high mechanical strength and wear
resistance under dusty conditions and mechanical loads improve the
performance of critical components in this sector.
UHMW-PE is the most commonly used material in conveyor systems and
packaging machinery. Depending on the application conditions,
engineering plastics such as POM, PA, and PEEK may be selected for high
mechanical strength and wear resistance.
POM provides low friction and dimensional precision in gears and
bushings, while PA offers high impact and load resistance. PEEK and PAI
are preferred for the most demanding operating conditions.
POM, PA, and UHMW-PE are the most commonly used plastics in bearing and
bushing applications. PEEK and PAI are preferred for high-temperature
and severe operating conditions.
Plastics that generate low levels of particles and are easy to clean
should be preferred in cleanroom applications. PEEK, POM, PET, and PVDF
are suitable for such environments.
Certified, safe, and low-emission plastics such as PE, PP, UHMW-PE, POM,
PET, and PEEK are preferred in the food industry.
PTFE, PVDF, PEEK, and PPS are preferred for their high chemical
resistance in chemical plants, while PE and PP are used in storage and
handling applications involving less severe conditions.
Cast PA and UHMW-PE are widely used in heavy load-bearing systems. PEEK
and PAI are preferred under high temperatures and continuous mechanical
stress.
PAI is preferred in the aerospace and defense industries because it
maintains its dimensional stability under high temperatures and
continuous mechanical loads. It provides long-lasting and reliable
performance in critical and precision components.
PPS is widely used around engines and in electrical components in the
automotive industry. Its high-temperature and chemical resistance
provide reliable performance in critical components.
Yes, PSU can be used in medical applications. Its resistance to steam
sterilization and chemical cleaning makes it suitable for medical
devices.
Fiber materials are ideal for applications requiring high strength and
low weight. They are preferred in systems where mechanical load-bearing
capacity and dimensional stability are critical.
Production, Processing & Application Techniques
Plastic materials are processed using CNC turning and milling, methods.
Engineering plastics such as PA (Polyamide), POM, and PEEK can provide
high surface quality and extended component life when machined
correctly.
Plastic turning and milling are machining processes used for engineering
plastics. Materials such as PA (Polyamide), POM, and PEEK enable the
precise manufacture of components such as gears and bushings that
require high mechanical strength and wear resistance.
Dimensional deviation during plastic machining may result from heat,
moisture, or incorrect machining parameters. Proper machining of
engineering plastics such as PA (Polyamide), POM, PEEK, and PPS helps
maintain dimensional accuracy as well as mechanical strength and wear
resistance.
Plastic rods are preferred for bushings, shafts, and rollers, whereas
sheets are used for plates and guide rails. Selecting the correct
semi-finished form of engineering plastics such as PA (Polyamide), POM,
and PEEK reduces cost and improves machining efficiency.
Thermoplastics such as PE, PP, and PVDF can be welded. For engineering
plastics such as PA (Polyamide), POM, and PEEK, mechanical fastening is
generally preferred. These materials are mechanically joined to maintain
dimensional stability in applications requiring high mechanical strength
and wear resistance.
Injection molding is used for the mass production of complex components,
whereas extrusion converts engineering plastics such as PA (Polyamide),
POM, and PEEK into rods or sheets. These semi-finished products are then
converted into their final shapes through CNC machining in
machine-manufacturing processes.