PPSU Sheet — Thicknesses, Sizes & Stock Forms
PPSU sheet is flat stock produced from polyphenylsulfone (PPSU), a high-performance amorphous thermoplastic combining superior impact resistance, excellent hydrolytic stability, and broad thermal capability. PPSU sheet is used for fabricated components in medical, aerospace, plumbing, and industrial applications where flat parts must withstand repeated sterilization, hot-water immersion, or harsh cleaning processes without degrading mechanically or dimensionally.
At a glance:
- Thickness range: standard thicknesses available for fabrication
- Standard sheet sizes: standard panel sizes available
- Material: Polyphenylsulfone (PPSU)
- Color: Amber/translucent (natural)
- Excellent hydrolytic stability — resists steam and sterilization cycles
- Superior impact resistance compared to PSU and PEI
Standard Thickness Table
PPSU sheet is stocked in common thicknesses to support saw cutting, milling, and waterjet fabrication:
| Thickness | Sheet Sizes | Notes |
|---|---|---|
| 1/8" (0.125") | 24"×48", 48"×96" | Thin panels, covers, spacers |
| 1/4" (0.250") | 24"×48", 48"×96" | Structural flat parts |
| 3/8" (0.375") | 24"×48", 48"×96" | Medium-duty components |
| 1/2" (0.500") | 24"×48", 48"×96" | Housing blanks, valve bodies |
| 3/4" (0.750") | 24"×48", 48"×96" | Heavier structural sections |
| 1" (1.000") | 24"×48" | Block-thickness machined parts |
Contact Ready Plastics for current stock and cut-to-size availability.
Properties
PPSU sheet delivers high-toughness performance with excellent hydrolytic stability:
| Property | Value |
|---|---|
| Impact resistance | Outstanding — superior to PSU and PEI |
| Hydrolytic stability | Excellent — withstands steam and aggressive sterilization |
| Dimensional stability | Reliable under mechanical and thermal load |
| Service temperature | Wide range; maintains performance at elevated temperatures |
| Chemical resistance | Good in most medical and industrial environments |
Consult the Ready Plastics PPSU datasheet or contact our technical team for grade-specific numeric property tables.
Typical Applications
PPSU sheet is fabricated into flat components for demanding service environments:
- Medical tray and housing components — autoclave compatibility for repeated steam sterilization cycles
- Aerospace interior panels and brackets — toughness and dimensional stability in aviation environments
- Plumbing system components — hydrolytic stability for hot-water and steam service
- Food processing equipment panels — resists aggressive cleaning and sanitizing agents
- Industrial pump and valve body sections — toughness and thermal reliability in fluid-handling systems
- Research laboratory apparatus components — chemical resistance and dimensional stability for scientific equipment
Machining PPSU Sheet
PPSU sheet machines well with standard plastics fabrication equipment. Table saws with fine-tooth carbide blades, CNC routers with O-flute bits, and waterjet cutters all produce clean edges and profiles. Drill, mill, and tap with conventional carbide tooling at moderate feeds and speeds to avoid heat buildup. PPSU produces consistent chips without gumming. Tolerances comparable to other amorphous high-performance thermoplastics are achievable with careful machining practice.