Material Type: PAI

Property

Value / Range

Polymer Type

Polyamide-imide (PAI) — Uncured

Grade

Uncured (pre-imidized)

RENU™ Code

RENU™ PAI UNC-MP140

Color

Light amber (pre-cure); darkens to dark amber upon full cure

Mesh Size

140 mesh (≤ 105 µm)

Bulk Density (loose)

0.30–0.45 g/cm³

Specific Gravity (fully cured)

1.40 g/cm³

Storage Requirement

Cool, dry, sealed container — limited shelf life at room temp

Property

Value

Tg (fully cured)

275°C (527°F)

Continuous Use Temp (fully cured)

260°C (500°F)

Cure Onset Temperature

150–175°C

Full Cure Temperature (recommended)

232–260°C for 16–48 hours

Property

Value (SI)

Value (Imperial)

Tensile Strength (fully cured)

152 MPa

22,000 psi

Flexural Strength (fully cured)

220 MPa

31,900 psi

Compressive Strength (fully cured)

172 MPa

24,900 psi

Izod Impact (Notched, cured)

144 J/m

2.7 ft-lb/in

Agent / Environment

Resistance Rating

See TDS-013

Chemical resistance profile identical to cured PAI — see TDS-013 for full data

Property

Value

Volume Resistivity (cured)

2 × 10¹⁵ Ω·cm

Dielectric Strength (cured)

560 kV/m

Application Area

Specific Uses

Compression Molding (Near-Net-Shape)

Primary application — uncured PAI provides excellent moldability for complex geometries

Custom-Profile Seals

Gaskets, seals, and rings molded to specific profiles before cure

High-Performance Bearings

Bearing blanks molded to near-net shape, then machined after full cure

Format

Details

Box (Standard)

Up to 25 kg (55 lbs) per box — double-wall corrugated with poly liner

Drum (Bulk)

68 kg (150 lbs) bulk drums — fiber or plastic drum with sealed poly liner

Custom Packaging

Available on request for larger volumes — contact PolyClean for details

Labeling

Each container labeled with: RENU™ product code, mesh size, lot number, and date of manufacture

Processing Notes

IMPORTANT: Uncured PAI has limited shelf life — store refrigerated (4°C) in sealed container to maximize storage stability.

Post-cure schedule: 150°C / 2 hr → 177°C / 2 hr → 204°C / 2 hr → 232°C / 16–48 hr.

Parts must be machined after full cure for dimensional precision.

Do not attempt to melt-process uncured PAI — compression molding only.

DISCLAIMER

The technical data contained in this document has not been produced by PolyClean Technologies through its own independent testing and measurements. This information has been assembled from publicly available data published by original polymer manufacturers and industry reference sources. PolyClean Technologies makes no warranties, expressed or implied, regarding the accuracy or completeness of this information.

Customers are solely responsible for verifying that this material is suitable for their specific application. PolyClean Technologies shall not be liable for any damages resulting from the use of this information or from the use of its products in any application. This data is intended for general guidance only.

RENU™ recycled materials are produced from post-industrial clean scrap and are appropriate for non-critical industrial, commercial, electronics, and general-purpose applications. They are not recommended or warranted for use in flight-critical aerospace structures, implantable medical devices, or other life-safety applications without thorough independent testing and qualification by the end user.

Property

Value / Range

Polymer Type

Polyamide-imide (PAI) — Fully Cured

Grade

Virgin

RENU™ Code

RENU™ PAI VIR-MP140

Color

Amber / dark tan (natural)

Mesh Size

140 mesh (≤ 105 µm)

Bulk Density (loose)

0.35–0.50 g/cm³

Specific Gravity

1.40 g/cm³

Moisture Content

< 0.1% (as-shipped)

Property

Value

Glass Transition Temperature (Tg)

275°C (527°F)

Continuous Use Temperature

260°C (500°F)

Short-Term Peak Temperature

295°C (563°F)

Thermal Conductivity

0.26 W/m·K

CTE

31 × 10⁻⁶ /°C (one of the lowest among unfilled polymers)

Heat Deflection Temperature (1.8 MPa)

278°C (532°F)

Property

Value (SI)

Value (Imperial)

Tensile Strength

152 MPa

22,000 psi

Tensile Modulus

4,500 MPa

653,000 psi

Elongation at Break

12%

12%

Flexural Strength

220 MPa

31,900 psi

Flexural Modulus

4,800 MPa

696,000 psi

Compressive Strength

172 MPa

24,900 psi

Izod Impact (Notched)

144 J/m

2.7 ft-lb/in

Hardness

Rockwell E75

Rockwell M125

PV Limit (dry)

0.25 MPa·m/s

53,000 psi·fpm

Agent / Environment

Resistance Rating

Fuels & Lubricants

Excellent

Aliphatic Hydrocarbons

Excellent

Aromatic Hydrocarbons

Excellent

Halogenated Solvents

Excellent

Dilute Acids

Good

Strong Acids

Limited

Alkalis (dilute)

Good

Strong Alkalis / Steam

Limited — imide linkage susceptible to hydrolysis at elevated temps

Water Absorption (24 hr)

0.33%

Property

Value

Volume Resistivity

2 × 10¹⁵ Ω·cm

Dielectric Strength

560 kV/m

Dielectric Constant (1 MHz)

4.2

Application Area

Specific Uses

Precision Bearings & Bushings

Highest PV-rated unfilled polymer — ideal for high-load, high-speed bearing applications

Seals & Piston Rings

Compressor seals, piston rings, and valve seats in demanding gas/fluid processing equipment

Non-Critical Aerospace (structural)

Brackets, spacers, thrust washers, and bearing races in high-temperature structural applications

Semiconductor Equipment

Wafer handling, process chamber components requiring ultra-high temperature resistance and dimensional stability

Oil & Gas Downhole

Seals, packers, and structural components in extreme downhole environments

Non-Critical Medical Devices

Sterilizable structural components for non-implantable surgical instruments and equipment

Format

Details

Box (Standard)

Up to 25 kg (55 lbs) per box — double-wall corrugated with poly liner

Drum (Bulk)

68 kg (150 lbs) bulk drums — fiber or plastic drum with sealed poly liner

Custom Packaging

Available on request for larger volumes — contact PolyClean for details

Labeling

Each container labeled with: RENU™ product code, mesh size, lot number, and date of manufacture

Processing Notes

PAI is highly hygroscopic — dry at 120°C for 16–24 hours before processing; 177°C for 4 hours for critical parts.

Cured PAI cannot be melt-processed conventionally — intended for compression molding and press-and-sinter.

Post-cure at 232–260°C recommended for 16–48 hours to achieve maximum mechanical properties in molded parts.

PAI has one of the highest strength-to-weight ratios of any unfilled engineering thermoplastic.

DISCLAIMER

The technical data contained in this document has not been produced by PolyClean Technologies through its own independent testing and measurements. This information has been assembled from publicly available data published by original polymer manufacturers and industry reference sources. PolyClean Technologies makes no warranties, expressed or implied, regarding the accuracy or completeness of this information.

Customers are solely responsible for verifying that this material is suitable for their specific application. PolyClean Technologies shall not be liable for any damages resulting from the use of this information or from the use of its products in any application. This data is intended for general guidance only.

RENU™ recycled materials are produced from post-industrial clean scrap and are appropriate for non-critical industrial, commercial, electronics, and general-purpose applications. They are not recommended or warranted for use in flight-critical aerospace structures, implantable medical devices, or other life-safety applications without thorough independent testing and qualification by the end user.