PET-GF30
Glass-reinforced engineering PET compound offering higher stiffness and heat resistance than PBT-GF grades in some formulations, used where fast crystallization and mechanical strength are needed in injection molded parts.
Reference datasheet — PET-GF30 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the GF30 condition
PET-GF30 grades and fills
PET-GF30 is supplied in 9 conditions, soft to hard. GF30 is the default FabDigit quotes; the values on this page are for it.
Compare all 9 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
GF30 + mineral | Pick when flatness and isotropic shrinkage matter more than peak strength (covers, plates). | 115 | 2 | 90 Shore D | |
impact modified (toughened) | Use where snap-fits, drop loads or notch sensitivity govern, accepting lower stiffness and HDT. | 120 | 4 | 87 Shore D | |
flame retardant, UL 94 V-0 | Pick for electrical housings, connectors and breaker parts needing V-0 at 0.8–1.5 mm. | 130 | 2 | ||
GF30 lubricated | Choose for gears, cams and sliding parts needing low friction with high stiffness. | 130 | 2.2 | 88 Shore D | |
RPET-GF30 | Cost- and carbon-reduced option for non-critical structural parts; properties vary batch to batch. | 130 | 2.2 | 89 Shore D | |
GF30 ESD/conductive | Use for electronics handling parts requiring 10^4–10^9 Ω surface resistivity. | 140 | 2 | 90 Shore D | |
heat stabilized for long-term thermal ageing | Choose for parts held above 120 °C for thousands of hours (lamp holders, under-hood brackets). | 148 | 2.4 | 90 Shore D | |
UV / weather stabilized (usually black) | Specify for outdoor-exposed structural parts; carbon-black or HALS/UVA packages limit chalking. | 148 | 2.4 | 90 Shore D | |
GF30Default 30% glass fiber, natural/standard injection grade | Default high-stiffness, high-HDT structural grade for hot-mould injection with fast cycles. | 150 | 2.5 | 90 Shore D |
Supply forms, finishes and certifications
Ways PET-GF30 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
GF30-FC | GF30 food contact | Certification |
What is PET-GF30?
Glass-reinforced engineering PET compound offering higher stiffness and heat resistance than PBT-GF grades in some formulations, used where fast crystallization and mechanical strength are needed in injection molded parts. PET-GF30 has a density of 1.56 g/cm³ (0.0564 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is 79°C (174 °F). PET-GF30 has a tensile strength of 150 MPa (21.8 ksi), stronger than 95% of polymer grades. Elongation at break is 2.5% and the elastic modulus is 9.5 GPa (1.38 Msi).
What is PET-GF30 used for?
- Electrical/electronic connectors
- Automotive structural clips
- Pump and motor housings
- Industrial gears
Advantages
- Stiff — 9.5 GPa (1.38 Msi), better than 94% of polymer grades
- Low, predictable mold shrinkage — 0.3%, better than 90% of polymer grades
- Tough — resists crack growth — 3.5 MPa·√m (3.19 ksi·√in), better than 81% of polymer grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 81% of polymer grades
- Conducts heat well — 0.29 W/m·K (0.168 BTU/hr·ft·°F), better than 80% of polymer grades
Limitations
- Heavy — 1.56 g/cm³ (0.0564 lb/in³), worse than 91% of polymer grades
- Hard to polish — 25/100, worse than 90% of polymer grades
- Limited ductility — 2.5%, worse than 89% of polymer grades
- Limited formability — 10/100, worse than 87% of polymer grades
- Difficult to machine — 45/100, worse than 78% of polymer grades
PET-GF30 properties
Typical room-temperature values for PET-GF30-GF30; bars are the position among polymer grades.
Physical5
PET-GF30 has a density of 1.56 g/cm³ (0.0564 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is 79°C (174 °F).
Mechanical15
PET-GF30 has a tensile strength of 150 MPa (21.8 ksi), stronger than 95% of polymer grades. Elongation at break is 2.5% and the elastic modulus is 9.5 GPa (1.38 Msi).
Thermal11
PET-GF30 is rated for continuous service to 140°C (284 °F). It conducts heat at 0.29 W/m·K (0.168 BTU/hr·ft·°F), better than 80% of polymer grades. Thermal expansion is 25 µm/m·K (13.9 µin/in·°F).
Electrical7
PET-GF30 is an electrical insulator with a dielectric strength of 28 kV/mm (711.2 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (72/100), worse than 70% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of PET-GF30 takes about 80 MJ of energy and emits 3.2 kg of CO₂ — less than 85% of polymer grades. Typical recycled content is 0%.
Manufacturability7
PET-GF30's machinability is fair (45/100, worse than 78% of polymer grades); weldability poor (30/100); formability not recommended (10/100).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. PET-GF30 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with PET-GF30
Is PET-GF30 easy to machine?
Machines cleanly but the glass is abrasive — use sharp carbide or PCD tools, high speed, light feed and air/mist cooling; avoid water contact on hot chips.
Can PET-GF30 be welded?
Not solvent- or hot-plate-friendly; join by ultrasonic, vibration or laser welding with reduced strength across the fiber-poor weld, or use screws/heat-staked inserts.
Can PET-GF30 be formed, bent or molded?
Dry to <0.02 % moisture (150 °C, 4–6 h) to prevent hydrolytic IV loss; mould at 275–290 °C melt with a 130–140 °C hot mould for full crystallization and dimensional stability.
PET-GF30 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| glass fiberchopped E-glass, silane sized, 10–13 µm diameter | 28 – 32 | 30 |
| nucleating agent / crystallization promoe.g. sodium ionomer or talc | 0.3 – 2 | 1 |
| coupling agent, chain extender, stabilizprocess and thermal stabilization package | 0.3 – 2.5 | 1 |
| poly(ethylene terephthalate) matrixbottle/fiber-grade IV 0.60–0.80 dL/g resin, nucleated for fast crystallization | ≥ 62 (balance) |
What surface finishes work on PET-GF30?
Paintable and pad-printable after cleaning; gate/weld lines and glass bloom limit gloss, so texture the tool or use black pigmented grades for cosmetic surfaces.
How much does PET-GF30 cost?
PET-GF30 is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
PET-GF30 — frequently asked
What is PET-GF30 used for?
PET-GF30 is typically used for electrical/electronic connectors, automotive structural clips, pump and motor housings and industrial gears. In short: higher-heat reinforced polyester; stiffer than PBT-GF30; needs hot-mold processing.
What is the tensile strength of PET-GF30?
PET-GF30 has a typical tensile strength of 150 MPa (21.8 ksi) — stronger than 95% of polymer grades. Strength varies by condition: see the 9 listed tempers.
Is PET-GF30 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 78% of polymer grades). Machines cleanly but the glass is abrasive — use sharp carbide or PCD tools, high speed, light feed and air/mist cooling; avoid water contact on hot chips.
Can PET-GF30 be welded?
Not readily — weldability is rated poor (30/100). Not solvent- or hot-plate-friendly; join by ultrasonic, vibration or laser welding with reduced strength across the fiber-poor weld, or use screws/heat-staked inserts.
What surface finishes work on PET-GF30?
Paintable and pad-printable after cleaning; gate/weld lines and glass bloom limit gloss, so texture the tool or use black pigmented grades for cosmetic surfaces.
Can PET-GF30 be formed, bent or molded?
Dry to <0.02 % moisture (150 °C, 4–6 h) to prevent hydrolytic IV loss; mould at 275–290 °C melt with a 130–140 °C hot mould for full crystallization and dimensional stability.
What is the maximum service temperature of PET-GF30?
PET-GF30 is rated for continuous use to about 140°C (284 °F), and briefly to 220°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does PET-GF30 cost?
PET-GF30 is a standard-cost polymer ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ISO 20028 / ASTM D5927 — Thermoplastic polyester (PET, PBT) moulding and extrusion materials — ISO / ASTM (2018)
- CAMPUS plastics database — PET-GF30 datasheets (ISO 10350-1 single-point data) — CAMPUS consortium (2024)
- Rynite 530 / 530 NC010 30% glass reinforced PET product data — DuPont / Celanese (2023)
- Technyl / Ecotech PET-GF compound technical data — DOMO Chemicals (2023)
- Engineered Materials Handbook Vol. 2 — Engineering Plastics — ASM International (1988)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.