Expert verdict · 50% match

PPS GF40 vs PA66 GF30: Both high-temp reinforced plastics — PPS is moisture-proof and hotter

PPS GF40 vs PA66 GF30

Q: 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

Q: 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.

Q: What is the difference between PPS GF40 and PA66 GF30?

The main differences are in the following elements: overall alloying content. PPS GF40 is a Polymers grade, while PA66 GF30 is a Polymers grade.

Side-by-side chemical composition and mechanical property comparison.

Overview

PPS GF40

Polymershigh_performance_reinforced

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

Polymerspolyamide_reinforced

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

Mechanical properties

Property	PPS GF40	PA66 GF30	Unit
tensile_strength	150–185	185–200	MPa
elongation	1–2	3–4	%
e_modulus	13–15	9.5–11	GPa

density	1.65–1.7	1.36–1.38	g/cm3
hdt_1_8mpa	260–270	245–255	°C
melting_point	280–285	≥ 260	°C
continuous_use_temp	220–240	—	°C
water_absorption_24h	0.01–0.02	—	%
Tensile Strength	—	170–195	MPa
Tensile Modulus	—	9000–11000	MPa
Elongation at Break	—	3–5	%
Charpy Impact (notched)	—	10–14	kJ/m²
Density	—	1.36–1.38	g/cm³
Melting Point	—	255–260	°C
HDT/A (1.8 MPa)	—	245–255	°C
Water Absorption (24h)	—	0.9–1.2	%
Glass Fiber Content	—	30	%

Compatibility 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: overall alloying content. PPS GF40 is a Polymers grade, while PA66 GF30 is a Polymers grade.

Related Comparisons

PPS GF40vsPA66 GF30 PPS (unfilled)vsPPS GF40 PA66 GF30vsPA6 GF30

View full data for each material:

PPS GF40 details PA66 GF30 details

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.