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VANDIT POLYCRAFT PVT. LTD.
Processing Polymers Since 1987

Material PAI

About Polyamide-Imide (PAI)

Polyamide-Imide (PAI) is a high-performance thermoplastic known for its exceptional mechanical, thermal, and chemical properties. As one of the strongest and most heat-resistant engineering plastics, PAI is often chosen for demanding applications where durability and performance are critical. This material offers superior resistance to wear, creep, and deformation, even under extreme conditions. Its unique combination of properties makes it indispensable in industries requiring precision, strength, and reliability.
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Properties of
Polyamide-Imide (PAI)

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High Mechanical Strength

Retains strength and stiffness at elevated temperatures
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Thermal Stability

Operates effectively in temperatures up to 260°C (500°F) with intermittent exposure to higher temperatures.
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Wear Resistance

Exhibits excellent resistance to abrasion and sliding wear.
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Chemical Resistance

Resistant to oils, fuels, and most chemicals, including weak acids and bases.
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Dimensional Stability

Low thermal expansion and high resistance to creep.
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Electrical Properties

Superior insulation characteristics, even at high temperatures.
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Flame Resistance

Naturally flame-retardant, with self-extinguishing properties.

Specifications of PAI

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Density

~1.41–1.44 g/cm³
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Tensile Strength

100–150 MPa
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Flexural Strength

200–300 MPa 30–40 MPa
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Elongation at Break

Elongation at Break
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Hardness

~85–90 Shore D
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Continuous Temperature

Up to 260°C (500°F)
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Thermal Conductivity

Low, ensuring thermal insulation.

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Characteristics & Specialty of PAI

Exceptional Strength-to-Weight Ratio

Offers metal-like strength while being lightweight.

Resistance to Extreme Conditions

Performs well in high heat, mechanical stress, and chemical exposure.

Low Friction Coefficient

Ideal for tribological applications requiring smooth movement.

Machinability

Can be precision-machined for tight tolerances and intricate designs.

Long Service Life

High durability reduces maintenance and replacement costs in critical applications.

Use Cases & Industrial Sector Applications

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Aerospace and Defense

– Components for jet engines, including seals, bushings, and thrust washers.
– Lightweight structural components for aircraft and spacecraft.

Aerospace and Defense

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Automotive

– High-performance gears, bearings, and seals in powertrains. – Linings for chemical tanks and pipes.
– Components for turbochargers and fuel injection systems.

Automotive

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Electrical and Electronics

– Insulators for high-temperature environments.
– Components for precision instruments and circuit boards.

Electrical and Electronics

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Industrial Machinery

– Wear-resistant parts such as rollers, gears, and valves.
– Components in pumps and compressors exposed to aggressive conditions.

Industrial Machinery

Other Applications

Oil and Gas Industry

Components for drilling equipment and tools exposed to harsh environments.

Seals and bearings for high-pressure and high-temperature operations.

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Medical Devices

Parts for diagnostic and therapeutic equipment requiring precision and durability.

Sterilization-resistant components.

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Semiconductor Industry

High-purity parts for manufacturing equipment.

Components that require resistance to chemicals and high temperatures.

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Food Processing

Wear-resistant components for food handling and processing equipment.

Non-contaminating, FDA-compliant materials.

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