PEEK 990GF30 30% Glass Fiber Reinforced | High Rigidity Extrusion Grade

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Glass Fiber Reinforced PEEK High Rigidity And High Strength 990GF30

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PEEK 990GF30 30% Glass Fiber Reinforced | High Rigidity Extrusion Grade

Name: PEEK 990GF30 30% Glass Fiber Reinforced | High Rigidity Extrusion Grade
Brand: PRES
SKU: 144621786
Rating: 5.0 (56 reviews)

PEEK 990GF30 is a high-viscosity, 30 % glass fiber reinforced PEEK grade that delivers substantially higher tensile strength, flexural modulus and improved dimensional stability compared to unfilled PEEK.

The high melt viscosity provides stable extrusion behavior and minimizes warpage in thick-section molded parts. With reduced coefficient of thermal expansion (CTE) and good creep resistance at elevated temperature, it is suitable for extrusion of rod, sheet and tube, as well as thick-walled injection molding requiring structural rigidity.

Not recommended for thin-wall or long-flow-path injection due to limited melt flow (MFR ≈ 4.5 g/10 min, ISO 1133, 380 ℃/5 kg).

Material:	30% glass fiber reinforced PEEK
Color:	NATURE
MOQ:	1KG
Packing:	25kg/bag
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Model:
PEEK 990GF30
Brand:
PRES

Product Description

|PRES

PEEK 990GF30 Product Description

		High-temperature resistant
	1.Glass transition temperature: 143°C 2.Heat distortion temperature: 320°C 3.Long-term using temperature: 260°C 4.Short-term using temperature: 300°C 5.Melting point: 343°C
		High moulds and high tensile strength
	1.Ｇlass fiber significantly improves the tensile strength of PEEK,up to 175MPa 2.Flexural Modulus 11 GPa of PEEK, enabling it to withstand higher loads and stresses
		Dimensional stability and low thermal expansion
		Chemical stability

|PRES PEEK 990GF30 Application

If your application demands thick walls combined with high load-bearing strength, long-term creep resistance, and chemical inertness, PEEK 990GF30 stands out as the ideal material solution. It is specifically formulated for thick-walled injection molding as well as extrusion profile production.

|Typical case1：10mm thickness GF30 PEEK valve

|In fact，990GF30 is also suitable for thickness 8-15mm，even thicker

Reliable Mold Filling – Although 990GF30 has high melt viscosity, it can still fully fills thick-walled molds, ensuring dense, structurally sound parts.
Superior Load-Bearing Capacity – Compared to faster-flowing GF grades, it withstands significantly higher pressures and maintains PEEK’s excellent chemical resistance.
Excellent Surface Quality – The high-viscosity matrix minimizes sink marks and flash during molding, ensuring a flat surface and consistent, high-quality appearance.

|Typical case2:PEEK GF30 sheet&rods&tube extrusion

|990GF30 is also suitable for Extrusion of special-shaped parts

In addition to thick-walled injection molding, PEEK 990GF30 is also highly suitable for the extrusion of semi-finished stock shapes such as plate, rod, and thick-walled tube.

This capability is primarily attributed to its high melt viscosity (MVR ≈ 4.5 g/10 min, ISO 1133), which delivers excellent melt strength.

✅During extrusion, the high-viscosity melt provides sufficient structural integrity to resist gravity and internal stress immediately after exiting the die, ensuring the profile maintains its precise cross-sectional geometry without collapse or distortion.

✅Furthermore, the 30% chopped glass fiber reinforcement achieves a homogeneous and stable distribution within the high-viscosity matrix. This not only significantly reduces the coefficient of thermal expansion and molding shrinkage but also effectively suppresses warpage during the slow cooling of thick sections.

As a result, PEEK 990GF30 is the ideal choice for producing large-dimension, high-precision GF30 profiles, which can subsequently be machined into critical components such as valve plates, flanges, and insulating spacers.

PEEK GF30 sheet

PEEK GF30 rods

PEEK GF30tubes

Certifications

Data SheetPRESPEEK990GL30.pdf

**PRES PEEK 990GF30 Technical Data Sheet**
Test Item	Test Method	Conditions	Units	Test Data
Mechanical Data
Tensile Strength	ISO 527	Yield, 23 °C	MPa	175
Tensile Elongation	ISO 527	Break, 23 °C	%	2.7
Flexural Strength	ISO 178	Yield, 23 °C	MPa	265
Flexural Modulus	ISO 178	23 °C	GPa	11.3
Compressive Strength	ISO 604	23 °C	MPa	250
Charpy Impact Strength	ISO 179/1eA	Notched	kJ/m²	8
	ISO 179/1U	Unnotched	kJ/m²	55
Mould Shrinkage	ISO 294‑4	Along Flow	%	0.3
		Across Flow	%	0.8
Thermal Data
Melting Point	ISO 11357	—	°C	343
Glass Transition (Tg)	ISO 11357	Onset	°C	143
Coefficient of Thermal Expansion	ISO 11359	Below Tg	ppm/K	18
		Above Tg	ppm/K	18
Heat Deflection Temperature	ISO 75	1.8 MPa	°C	320
Thermal Conductivity	ISO 22007‑4	23 °C	W/m·K	0.3
Flow
Melt Mass‑Flow Rate	ISO 1133	380 °C, 5 kg	g/10 min	4.5
Miscellaneous
Density	ISO 1183	Crystalline	g/cm³	1.50
Shore D Hardness	ISO 868	23 °C	—	88
Water Absorption	ISO 62	24 h, 23 °C	%	0.04
		Equilibrium	%	0.30