PPS GF40 vs PA66 GF30: Both high-temp reinforced plastics — PPS is moisture-proof and hotter
PPS GF40 vs PA66 GF30
Side-by-side chemical composition and mechanical property comparison.
Overview
PPS GF40
Polyphenylene Sulfide with 40% glass fiber — the ultimate under-hood engineering plastic. Service to 240°C continuous, inherently V-0 flame resistant without additives, near-zero moisture absorption (<0.02%), exceptional chemical resistance (comparable to PEEK/fluoropolymers). Trade names include Ryton R-4 (Solvay), Fortron 1140L4 (Celanese), Tedur (INEOS), TECATRON GF40 (Ensinger). Used for automotive water pump impellers, thermostat housings, EGR valves, LED reflectors, and semiconductor wafer carriers.
PA66 GF30
Polyamide 66 with 30% short glass fiber — stronger and more heat-resistant than PA6 GF30 due to higher-Tm base polymer. UTS ~190 MPa dry, HDT ~250°C. THE automotive under-hood material for structural brackets. Trade names include Ultramid A3WG6 (BASF), Zytel 70G30 (DuPont), Durethan AKV 30 (LANXESS), Technyl A218 V30 (Domo). Used for engine brackets, radiator end tanks, air intake manifolds, and electrical connectors.
| PPS GF40 | PA66 GF30 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 10350 | ISO 10350 |
Chemical composition (wt%) — Pro
| Element | PPS GF40 | PA66 GF30 | Overlap |
|---|---|---|---|
| Polyphenylene Sulfide (Base Polymer) | 58–62% | — | — |
| Glass Fiber Reinforcement | 38–42% | 28–32% | No overlap |
| Polyamide 66 (Base Polymer) | — | 68–72% | — |
Mechanical properties — Pro
| Property | PPS GF40 | PA66 GF30 | Unit |
|---|---|---|---|
| Tensile Strength | 150–185 | 185–200 | MPa |
| Elongation | 1–2 | 3–4 | % |
| Elastic Modulus | 13–15 | 9.5–11 | GPa |
| Density | |||
| hdt_1_8mpa | |||
| Melting Point | |||
| Continuous Use Temp | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Tensile Modulus | |||
| Elongation at Break | |||
| Charpy Impact (notched) | |||
| Density | |||
| Melting Point | |||
| HDT/A (1.8 MPa) | |||
| Water Absorption (24h) | |||
| Glass Fiber Content |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
PPS GF40 has higher service temp (240 vs 180°C continuous), zero moisture sensitivity, inherent V-0 flame rating, and better chemical resistance. PA66 GF30 is tougher (less brittle), cheaper, and easier to process. Choose PPS GF40 for coolant-carrying/chemical/high-temp; PA66 GF30 for structural/impact.
Frequently Asked Questions
Is PPS GF40 the same as PA66 GF30?
PPS GF40 and PA66 GF30 have a 50% composition overlap. Both high-temp reinforced plastics — PPS is moisture-proof and hotter
Can I replace PPS GF40 with PA66 GF30?
Generally not recommended. The compositions differ significantly (50% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between PPS GF40 and PA66 GF30?
The main differences are in the following elements: Glass Fiber Reinforcement. PPS GF40 is a Polymers grade, while PA66 GF30 is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.