Material focus
PPSU selection, applications, and sibling resin routing on this page.
PPSU
PPSU Injection Molding: Properties, Applications and Design Guide
Polyphenylsulfone (PPSU, Radel) offers high heat, toughness, and hydrolytic stability for repeated hot-water and steam exposure.
PPSU
When to specify PPSU
How procurement and design teams use PPSU on injection molded programs.
Polyphenylsulfone (PPSU, Radel) offers high heat, toughness, and hydrolytic stability for repeated hot-water and steam exposure. It is a common upgrade from PC or PSU when autoclave-style cycles crack less tough amorphous parts. Regulated programs still require supplier documentation for the exact grade; the molder molds the resin you specify. At NetProto, programs run from first-article validation through production on one hardened steel tool with no minimum order quantity. Upload CAD on the instant quote platform for DFM feedback before tooling release.
Key traits
Why buyers specify PPSU
Engineering and sourcing highlights. No NetProto processing numbers on this page.
Sourcing
Grade and compliance context travels with CAD on the instant quote platform.
Program fit
First articles through production on one steel tool, no MOQ.
NetProto platform
Instant CAD quoting and DFM feedback before tooling release.
Tooling lead time
10 business days on qualified programs, depending on part size and complexity.
Common grades
Common PPSU (Polyphenylsulfone) grades by use case
Pick one of these on the instant quote, or name any other commercial grade in the RFQ notes. Steam performance varies by grade. Confirm it on the supplier TDS before specifying a sterile-service program.
| Use case | Example grade | Typical parts |
|---|---|---|
| Transparent general | Radel R-5000 | Medical device housings, surgical instruments, food service parts |
| High flow | Radel R-5800 | Thin wall high heat parts needing long flow paths |
| Opaque molding | Radel R-5100 | High heat housings and fluid contact components |
Applications
Where this resin shows up on BOMs
Typical molded parts and what to specify on the purchase order.
| Application | Why this resin | Specify on the PO |
|---|---|---|
| Reusable medical trays and couplers | Steam and hot-water cycles as filters | Grade + supplier compliance package |
| Food service hardware | Hot water and detergent exposure | Food-contact documentation from resin vendor |
| Plumbing manifolds | Chlorinated hot water context | Pressure and temperature notes |
RFQ
Ready to quote? Have this information ready
Prepare these details, then upload CAD on the instant quote platform.
Hydrolysis stability requirement (hot water or steam)
Steam sterilization cycles your program expects
Chemical resistance list (cleaners, disinfectants)
Transparency requirement
Impact and toughness requirement
Commercial grade, or the use case to match (transparent vs opaque, steam sterilization, high heat toughness)
Expected annual volume (helps cavity and tool planning)
Next step
Upload CAD for an instant quote
Grade not finalized? Note PPSU on the RFQ and attach environment notes.
Compare and explore
Related guides
Pairwise comparisons and sibling material pages.
Polysulfone (PSU)
Lower cost sulfone sibling.
Polysulfone (PSU)
PEI (Ultem)
Higher heat amber resin.
PEI (Ultem)
PEEK
Higher performance tier.
PEEK
Polycarbonate
Clear resin often replaced by PPSU in hot water.
Polycarbonate
PPO (Noryl)
Opaque housings, not a clear sulfone.
PPO (Noryl)
Materials library
Browse all resin guides.
Materials library
Reading a material datasheet
What the TDS (Technical Data Sheet) values mean for a molded part.
Reading a material datasheet
Specify resin grade on an RFQ
How to write grade, color, and fillers so the quote matches the part.
Specify resin grade on an RFQFAQ
PPSU injection molding FAQ
PPSU vs PC?
PPSU wins on hot-water toughness; PC wins on cost and clarity.
PPSU vs PSU?
Choose PPSU when the part needs more toughness and hydrolysis resistance in repeated steam. PSU is the usual transparent fluid-part choice when the service is less severe. Confirm both grades on the supplier TDS.
PPSU vs PEEK?
PEEK wins on extreme chemical and continuous high heat. PPSU often wins on transparency and notch toughness in steam service. Confirm both grades on the supplier TDS.
Can PPSU be transparent?
Many grades are translucent to transparent amber; verify optical need on T1.
What is the minimum order quantity for molded parts at NetProto?
NetProto has no minimum order quantity on molded parts from your production tool. Upload CAD on the instant quote platform to scope tooling and part pricing for your volume.
How do I quote this resin without a final grade selected?
List the resin family on the RFQ, attach environment and compliance notes, and upload CAD. At NetProto, engineers use DFM review to narrow grades before tooling release.
Next step
Quote PPSU parts with your CAD
Upload geometry and list PPSU or the target grade on the instant quote platform.