PI Plastic Material

for High-Temperature Machined Parts

PPS (polyphenylene sulfide) is a semi-crystalline high-performance engineering thermoplastic selected for its combination of high-temperature capability, broad chemical resistance, dimensional stability, low moisture absorption, and reliable electrical insulation. Great Plastics supplies PPS raw material, sheet, rod, and tube — and manufactures precision custom PPS components to your drawing.

MOQ (Min. Order)

From 1 piece for prototypes and drawing-based parts; production MOQ confirmed per grade and drawing.

FOB Port

FOB Shenzhen / Shanghai / Ningbo available; exact port, Incoterms and freight confirmed at quote.

Lead Time

Stock shapes ~5–7 working days; custom CNC parts 7–15 working days depending on grade, quantity and machining.

Samples

Samples available on request; sample cost, quantity and lead time confirmed quotation stage

QC & Inspection

In-process inspection, dimensional reports and third-party inspection supported; quality plan agreed from the drawing.

Payment & Support

T/T and other terms discussed per order; engineering support included with every inquiry.

Overview

What Is PPS Plastic Material?

PPS (polyphenylene sulfide) is a semi-crystalline high-performance engineering thermoplastic known for its excellent chemical resistance, high-temperature stability, low moisture absorption, and dimensional stability. Its rigid molecular structure allows PPS to maintain reliable performance in demanding thermal, chemical, and electrical environments.

PPS is available in unfilled and reinforced grades, including glass-fiber, carbon-fiber, and wear-modified formulations. It is commonly supplied as sheet, rod, and tube for machining into precision components used in semiconductor equipment, electrical and electronic systems, chemical processing, automotive applications, and industrial machinery.

PPS is often selected when applications require a combination of heat resistance, chemical resistance, dimensional stability, and electrical insulation with lower material cost than some higher-performance polymers.

Temperature

approximately 220–230 °C continuous service, depending on grade and application conditions

Chemical Resistance

Broad resistance to many acids, bases, fuels, oils, and solvents

Moisture Absorption

Very low, typically 0.02–0.05% / 24 h

Electrical Insulation

High volume resistivity with stable dielectric behavior in humidity

Dimensional Stability

Low moisture uptake and low creep; reinforced grades reduce thermal expansion

Machinability

Good for CNC milling, turning, drilling, threading, and finishing

Performance Data

Key Properties of PPS Plastic Materials

The following sections summarize the principal engineering properties of PPS. Actual values vary by grade, reinforcement, processing method, temperature, and test conditions.

Mechanical Properties

PPS provides good strength and stiffness with low creep. Glass- and carbon-fiber reinforced grades can further improve tensile strength, modulus, dimensional stability, and load-bearing performance.

Thermal Properties

PPS has a glass transition temperature of approximately 85–90°C and a melting temperature of about 280–290°C. Continuous service temperature is typically around 220–230°C, depending on grade, load, and operating conditions.

Chemical Properties

PPS resists many acids, bases, fuels, oils, and solvents and has good resistance to hydrolysis. Chemical compatibility depends on the specific chemical, concentration, temperature, exposure time, stress, and PPS grade.

Electrical Properties

PPS provides high electrical insulation, high volume resistivity, and stable dielectric performance. Its low moisture absorption helps maintain electrical properties under humid conditions.

PPS Material Properties — Typical Values for Unfilled PPS

Material Properties Table
Property Test Method Typical Value Unit
Density ASTM D792 / ISO 1183 1.34–1.36 g/cm³
Tensile Strength ASTM D638 / ISO 527 55–70 MPa
Tensile Modulus ASTM D638 / ISO 527 3.0–3.6 GPa
Flexural Strength ASTM D790 / ISO 178 80–100 MPa
Flexural Modulus ASTM D790 / ISO 178 3.0–3.8 GPa
Glass Transition Temperature (Tg) DSC / ISO 11357 85–90 °C
Melting Temperature DSC / ISO 11357 280–290 °C
Continuous Service Temperature UL 746B / supplier data ~220–230 °C
Coefficient of Linear Thermal Expansion ASTM E831 / ISO 11359 50–70 ppm/°C
Volume Resistivity ASTM D257 / IEC 60093 >1016 Ω·cm
Dielectric Strength ASTM D149 / IEC 60243 15–20 kV/mm
Water Absorption (24 h, 23 °C) ASTM D570 / ISO 62 0.02–0.05 %
Limiting Oxygen Index (LOI) ASTM D2863 / ISO 4589 44–47 %

Values shown are representative ranges for unfilled PPS stock shapes and are provided for material comparison only. Actual properties depend on PPS grade, resin supplier, processing method, specimen geometry, and test conditions.

Always refer to the applicable manufacturer TDS for design-critical applications.

Material Selection

PPS Plastic Grades and Material Options

PPS is supplied in several compounded grades, each formulated to emphasize specific engineering properties. The list below provides a starting point for grade selection; final choice depends on operating temperature, mechanical load, chemical environment, wear conditions, and dimensional requirements.

glass filled and carbon filled PPS plastic grades

Virgin PPS

Unfilled

Balanced chemical resistance, dimensional stability, low moisture absorption, and electrical insulation. Often considered for insulators, precision fixtures, chemically exposed parts, and applications where reinforcement is not required.

glass filled and carbon filled PPS plastic grades

GF30–GF40

Glass Fiber

Glass reinforcement increases stiffness, creep resistance, dimensional stability, and heat deflection under load. It is commonly considered for structural components, electrical housings, industrial parts, and mechanically loaded components.

glass filled and carbon filled PPS plastic grades

cf

Carbon-Fiber

Carbon reinforcement can improve stiffness and dimensional control while reducing thermal expansion. These grades are often considered for precision mechanical components where dimensional change over temperature must be minimized.

glass filled and carbon filled PPS plastic grades

Wear

Wear-Modified

PTFE-filled or internally lubricated PPS grades reduce friction and improve wear behavior. They are used for bushings, guides, sliding components, and wear parts that also need PPS thermal and chemical resistance.

glass filled and carbon filled PPS plastic grades

Bearing

Specialty

Specialty PPS grades may target cleanliness, electrical behavior, purity, or other application-specific requirements. These materials are evaluated for semiconductor, electrical, and specialized industrial applications where a standard grade may not fit.

Stock Shapes & Custom Parts

PPS Sheet, Rod, Tube & Custom Parts

Great Plastics supplies PPS stock shapes and custom-machined components for industrial and OEM applications. Available grades and dimensions depend on material type, reinforcement, and production requirements.

PPS plastic sheet for precision machining and insulation components

PPS Sheets

PPS sheets provide a stable base for machined plates, electrical insulation components, fixtures, gaskets, and other flat precision parts.

PPS plastic rod stock for CNC machined industrial components

PPS Rods

PPS rods are commonly machined into bushings, spacers, rollers, shafts, pins, and other cylindrical components.

PPS plastic tube stock for chemical resistant and insulating applications

PPS Tubes

PPS tubes can be used for sleeves, insulating components, and selected fluid-handling applications where chemical and thermal resistance are required.

custom CNC machined PPS plastic parts manufactured for OEM applications

Custom Machined Parts

Custom PPS components are machined from selected PPS grades according to customer drawings, CAD files, or samples. Prototype, low-volume, and production quantities are supported.

Need a specific PPS grade or size? Contact our engineering team for availability and machining options.

PPS Stock Shape Table
PPS Stock Shape Typical Form Grade Notes Custom Machining
PPS Sheet Plates or sheets Unfilled and reinforced options Yes
PPS Rod Round rod Unfilled and reinforced options Yes
PPS Tube Tubes or sleeves Selected grades Yes
Custom PPS Parts CNC machined components Grade-specific Yes

Industry Use Cases

Applications of PPS Plastic Materials

PPS is used across industries where heat resistance, chemical resistance, low moisture absorption, dimensional stability, electrical insulation, and wear performance are important. Typical applications include semiconductor equipment, automotive systems, electrical components, chemical processing, precision machinery, and industrial equipment.

Semiconductor Lithography Equipment

Semiconductor Equipment

PPS is used for selected semiconductor equipment components where low moisture absorption, chemical resistance, dimensional stability, and electrical insulation are required.

Typical Components: Fixtures · Insulators · Spacers · Handling Components

Engineering plastics are used in new energy vehicles

Automotive Systems

PPS is suitable for automotive components exposed to elevated temperatures, fuels, oils, and electrical environments where dimensional stability and chemical resistance are important.

Typical Components: Connectors · Sensor Parts · Housings · Pump Components

Renewable Energy

Electrical & Electronic

PPS provides heat-resistant electrical insulation with low moisture absorption and stable dielectric performance for electrical and electronic components.

Typical Components: Connectors · Insulators · Coil Components · Sensor Housings

Petrochemicals_files

Chemical Processing

PPS can be used in selected chemical-processing components requiring resistance to many acids, bases, oils, fuels, and solvents.

Typical Components: Valve Seats · Pump Components · Gaskets · Bushings

Precision Mechanical Engineering Plastic Parts

Precision Machinery

PPS is suitable for precision-machined components where low moisture absorption, dimensional stability, low creep, and machinability are important.

Typical Components:Locating Fixtures · Guide Blocks · Spacers · Precision Parts

Instrumentation Engineering Plastic Parts

Industrial Equipment

PPS is used for industrial components requiring a combination of thermal stability, chemical resistance, wear resistance, and dimensional control.

Typical Components: Wear Plates · Rollers · Bushings · Sliding Guides

Material Comparison

PPSvs Other Engineering Plastics

PPS is selected when chemical resistance, low moisture absorption, dimensional stability, heat resistance, and cost need to be balanced. It is not automatically better than PEEK, PTFE, PEI, POM, or Nylon; each material solves a different set of engineering constraints.

Material Comparison Table
Property PPS PEEK PTFE PEI POM Nylon (PA)
Temperature Resistance High; approximately 220–230 °C continuous when grade and conditions allow Higher extreme-temperature capability High temperature resistance under low load High amorphous heat resistance Moderate Moderate
Mechanical Strength Good; higher with reinforcement Higher toughness and strength Low load-bearing strength Good rigidity Good general strength Good toughness
Dimensional Stability Excellent low-moisture stability Excellent Poor under load Good Low moisture sensitivity Lower in humidity
Wear Resistance Good; better in wear grades Excellent Very low friction Moderate Good Good
Chemical Resistance Broad resistance to many chemicals Broad resistance in many environments Very high chemical inertness Limited against some solvents Limited against acids and bases Limited in hot water and humidity
Relative Cost Moderate High Low to moderate Moderate to high Low Low

PPS vs PEEK

Choose PPS when chemical resistance, dimensional stability, and cost control are important below the upper temperature and toughness limits of the application. Choose PEEK when higher extreme-temperature mechanical performance, toughness, or fatigue resistance is required.

PPS vs PTFE

Choose PPS for structural or precision components that must hold tolerances and carry load. Choose PTFE when very low friction and chemical inertness are the main priorities and the load-bearing requirement is lower.

PPS vs PEI

Choose PPS for stronger chemical resistance, lower moisture absorption, and dimensional stability in humid or chemically aggressive environments. Choose PEI when an amorphous high-temperature plastic, transparency, or specific electrical performance is more important.

PPS vs POM and Nylon

Choose PPS when heat, chemical exposure, or humidity makes POM or Nylon drift out of tolerance. Choose POM or Nylon when temperature and chemical requirements are lower and cost-sensitive general mechanical performance is the main driver.

Related material links: PEEK Plastic Materials | PEI Plastic Materials | PAI Plastic Materials

Manufacturing Capability

PPS CNC Machining and Custom Components

Over a decade of experience machining PPPS and high-performance polymers to the tightest tolerances.

Great Plastics manufactures custom PPS components from PPS blocks, sheets, rods, and tubes using CNC machining processes. We work from customer drawings and CAD files for prototype, low-volume, and OEM production requirements. For broader service details, see CNC Plastic Machining.

CNC Milling & Turning
Precision Machining
Tight Tolerance Parts
Prototype Production
OEM Volume Manufacturing
Multi-Axis Machining
1–10,000+
Parts per Run
CMM
Inspection
24h
Quote Turnaround

Your Partner

Why Choose Great Plastics

From material selection to volume production, we support industrial OEMs with engineering expertise and reliable global supply.

01

Engineering Support

Support for matching PPS grade families to heat, chemical, electrical, load, and machining requirements.

02

Material Selection

Guidance across unfilled, glass-filled, carbon-filled, wear-modified, and specialty PPS options when the application calls for them.

03

Custom Manufacturing

PPS stock shapes and custom PPS parts can be reviewed together, reducing handoff between material supply and machining.

04

Quality Control

Quality requirements can be defined from the drawing, material specification, tolerance, inspection method, and application risk.

05

Supply Coordination

Material form, grade, quantity, and production needs can be reviewed before quote so availability limits are clear.

Common Questions

Frequently Asked Questions

Quick answers to the questions engineers and procurement teams ask most about PPS materials.

What temperature can PPS withstand?

PPS is commonly used for continuous service around 220–230 °C, depending on grade, mechanical load, environment, and duration. Its melting temperature is much higher, approximately 280–290 °C, but melting temperature should not be treated as a continuous service rating.

Yes. PPS resists many acids, bases, fuels, oils, and solvents, but resistance depends on chemical type, concentration, temperature, exposure time, stress, and grade. Design-critical chemical exposure should be checked against the applicable data sheet.

PPS is not universally better than PEEK. PPS often offers chemical resistance, dimensional stability, and lower cost for many high-performance parts, while PEEK is stronger and tougher in more extreme temperature or mechanical conditions.

Yes. PPS can be milled, turned, drilled, threaded, and finished into precision components. Reinforced PPS grades can be abrasive, so tooling, workholding, and inspection requirements matter.

Common PPS options include unfilled, glass-filled, carbon-filled, wear-modified, and specialty grades. Great Plastics supports PPS sheet, rod, tube, and custom PPS part inquiries; specific availability should be confirmed for the grade and project.

Request a Quote for Custom PPS Plastic Components

Send your drawings, specifications, or part samples to our engineering team.

We’ll respond with material recommendations, pricing, and lead times within one business day.