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Nylon 66, 30% glass-filled (PA66-GF30)
PA66-GF30 is nylon 66 reinforced with 30% short glass fiber. Dry as molded, it reaches about 28,000 psi (190 MPa) tensile and 1.45 million psi (10 GPa) modulus, roughly three times unfilled PA66, with heat deflection near 480 °F (250 °C). It replaces die cast metal in brackets, housings and under-hood parts. Glass orientation causes uneven shrink and warp.
- ISO 1043
- PA66-GF30
- ASTM
- D4066 / D6779 (glass-reinforced polyamide)
- Trade names
- Zytel 70G30, Ultramid A3EG6
How does it compare?
Typical room-temperature values for PA66-GF30, against all 48 materials in the library.
- Tensile strength
- 190 MPa42th pct
- Density
- 1.37 g/cm³36th pct
- Max service temp
- 120 °C41th pct
- Elongation
- 3 %3th pct
- Relative cost
- $$$$$
Bars are relative to the strongest, densest or hottest material in the SSG library. Percentile vs all 48 materials.
- Density
- 1.37 g/cm³ · 0.0495 lb/in³
- Tensile strength
- 190 MPa · 27.6 ksi
- Elongation
- 3%
- Elastic modulus
- 10 GPa · 1.5 Msi
- Max service temperature
- 120 °C · 248 °F
- Melting point
- 262 °C · 504 °F
When should you use PA66-GF30?
Strengths
- About three times the stiffness of unfilled PA66
- Heat deflection near 480 °F (250 °C) at 264 psi
- Replaces aluminum and zinc die castings in many parts at lower weight
- Low creep and good fatigue for a plastic
- Heat-stabilized grades for continuous under-hood service
Watch for
- Anisotropic: strength and shrink differ along and across flow, which causes warp
- Glass at the surface gives a rough, fiber-streaked finish; texture cosmetic faces
- Abrasive glass wears molds; specify hardened tool steel
- Weld lines can lose up to about half their strength
Typical parts
- Brackets and structural housings
- Radiator end tanks and engine covers
- Power tool housings
- Electrical connectors and circuit breaker parts
- Pump housings and impellers
- Furniture and seating components
How PA66-GF30 is made into parts
Cost, finishes and design rules for each process in this material.
What does a part in PA66-GF30 cost?
A representative part, injection molding. Raw material at about $4.00/kg is one line of it; process time and tooling usually matter more.
Housing · Injection molding
Order total $26,302
- Tooling
- $17,029
- one-time, spread over the order
- Piece price
- $0.89
- before setup + tooling
- Lead time
- 6–9 weeks
- to first production
Size
Drag a row to adjust · click to type
Length140140 mm
Width90.090.0 mm
Wall2.202.20 mm
Quantity
Price per part falls as volume rises
Exact quantity1000010000 pcs
Material
Design checks pass
Open in builderBudgetary estimate for a representative part. Firm quotes come from principals after drawing review.
Compared head to head
PA66-GF30 questions
How much stronger is glass-filled nylon?
30% glass roughly doubles tensile strength (190 vs 83 MPa dry) and triples stiffness. It also cuts elongation to about 3%, so parts are stronger but less forgiving of snap-fit strain.
Why do glass-filled parts warp?
Fibers align with flow, so shrink along the flow, about 0.3–0.5%, is lower than across it, about 0.8–1.2%. Uneven walls and one-sided gating magnify it. Uniform walls, balanced gating and ribs aligned with flow reduce warp.
Can glass-filled nylon replace metal?
Often, for brackets, housings and covers under moderate load. It is about one-fifth the density of zinc and half that of aluminum, needs no finishing and molds in features. Metal stays the better call above about 300 °F (150 °C) under load, for tight long-term tolerances, or for high sustained loads.
Quote it in PA66-GF30.
Upload CAD or start from a template. The builder prices it in this material and the alternatives.