PESU-GF30 GF30-HF
Grade
ASTM D6402
GF30-HF = high-flow / easy-release molding grade
Pick for thin-wall, long-flow-path or multi-cavity precision tooling where standard viscosity cannot fill.
Values for the GF30-HF condition
Other PESU-GF30 grades and fills
PESU-GF30 is listed in 5 conditions; see the grade overview at PESU-GF30.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
internally lubricated bearing / wear grade | Use for bushings, thrust washers and sliding parts running hot and dry where GF alone would be too abrasive. | — | 115 | 2 | 87 Shore D |
GF30-HFThis page High-flow / easy-release molding grade | Pick for thin-wall, long-flow-path or multi-cavity precision tooling where standard viscosity cannot fill. | — | 142 | 2.2 | 89 Shore D |
Black, carbon-black pigmented / weather-improved grade | Choose when outdoor or lamp-adjacent exposure occurs and yellowing of the natural amber resin is unacceptable. | — | 148 | 2.4 | 90 Shore D |
GF30Default Standard 30 % glass-fiber reinforced injection-molding grade | Default choice for stiff, dimensionally stable high-temperature molded parts requiring inherent V-0 and steam resistance. | — | 150 | 2.5 | — |
Healthcare / biocompatible grade | Specify for sterilizable medical instrument bodies, dental and lab hardware needing documented biocompatibility and lot traceability. | — | 150 | 2.5 | 90 Shore D |
What is PESU-GF30 GF30-HF?
PESU-GF30 GF30-HF is PESU-GF30 in the GF30-HF grade — pick for thin-wall, long-flow-path or multi-cavity precision tooling where standard viscosity cannot fill. PESU-GF30 GF30-HF has a tensile strength of 142 MPa (20.6 ksi), stronger than 95% of polymer grades. Elongation at break is 2.2% and the elastic modulus is 9.2 GPa (1.33 Msi). PESU-GF30 GF30-HF has a density of 1.6 g/cm³ (0.0578 lb/in³), heavier than 92% of polymer grades. Its glass-transition temperature is 222°C (432 °F). GF30 is the default condition FabDigit quotes; GF30-HF is available on request or by drawing note.
Advantages
- Stiff — 9.2 GPa (1.33 Msi), better than 94% of polymer grades
- Low, predictable mold shrinkage — 0.25%, better than 93% of polymer grades
- Conducts heat well — 0.32 W/m·K (0.185 BTU/hr·ft·°F), better than 88% of polymer grades
- High service temperature — 195°C (383 °F), better than 86% of polymer grades
Limitations
- Limited ductility — 2.2%, worse than 92% of polymer grades
- Heavy — 1.6 g/cm³ (0.0578 lb/in³), worse than 92% of polymer grades
- Limited formability — 10/100, worse than 87% of polymer grades
- Hard to polish — 30/100, worse than 82% of polymer grades
- High embodied carbon — 7.5 kg CO₂/kg, worse than 79% of polymer grades
PESU-GF30 GF30-HF properties
Typical room-temperature values for PESU-GF30 GF30-HF; 26 are specific to this condition. Other listed values are PESU-GF30 reference data and may not represent this condition. Bars are the position among polymer grades.
Physical4
PESU-GF30 GF30-HF has a density of 1.6 g/cm³ (0.0578 lb/in³), heavier than 92% of polymer grades. Its glass-transition temperature is 222°C (432 °F).
Mechanical14
PESU-GF30 GF30-HF has a tensile strength of 142 MPa (20.6 ksi), stronger than 95% of polymer grades. Elongation at break is 2.2% and the elastic modulus is 9.2 GPa (1.33 Msi).
Thermal11
PESU-GF30 GF30-HF is rated for continuous service to 195°C (383 °F). It conducts heat at 0.32 W/m·K (0.185 BTU/hr·ft·°F), better than 88% of polymer grades. Thermal expansion is 22 µm/m·K (12.2 µin/in·°F).
Electrical7
PESU-GF30 GF30-HF is an electrical insulator with a dielectric strength of 22 kV/mm (558.8 V/mil) and a resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 65% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of PESU-GF30 GF30-HF takes about 120 MJ of energy and emits 7.5 kg of CO₂ — more than 73% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PESU-GF30 GF30-HF's machinability is fair (45/100, worse than 78% of polymer grades); weldability fair (45/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PESU-GF30 GF30-HF
Is PESU-GF30 easy to machine?
Machinable with sharp carbide or PCD tools, high speed and light feeds with air/mist cooling; glass fiber is abrasive and the amorphous matrix is notch- and stress-crack sensitive, so avoid sharp internal corners and anneal (≈180–200 °C) before finish cuts.
Can PESU-GF30 be welded?
Joined by ultrasonic, hot-plate, vibration or laser welding and by solvent-free adhesive bonding; weld-line and joint strength are limited by fiber orientation, so mechanical fasteners or molded-in inserts are common for structural loads.
Can PESU-GF30 be formed, bent or molded?
Dry pellets to <0.02 % (150 °C, 3–4 h desiccant) then injection mold at 340–380 °C melt with 140–180 °C tool; use high hot-runner temperatures, generous gates and hardened/plated screws and tooling because of fiber abrasion.
What surface finishes work on PESU-GF30?
Natural amber-to-tan appearance with visible fiber read-through; can be pad printed, painted with compatible primers, laser marked, and metallized/plated after suitable etch, but no anodizing and only limited polishing.
PESU-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 fibershort chopped E-glass, silane sized, ~10–13 µm diameter | 28 – 32 | 30 |
| pigments / processing aidscolourants, release agent; grade-dependent | 0 – 2 | 0.5 |
| polyethersulfone (PESU) resinamorphous poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) repeat unit | ≥ 68 (balance) | — |
PESU-GF30 GF30-HF — frequently asked
What is PESU-GF30 GF30-HF used for?
PESU-GF30 GF30-HF is typically used for aerospace ducting brackets, medical sterilizable trays, electrical connectors and automotive sensor housings. In short: highest-temperature filled sulfone; 200 °C continuous service; low-warpage precision molding.
What is the tensile strength of PESU-GF30 GF30-HF?
PESU-GF30 GF30-HF has a typical tensile strength of 142 MPa (20.6 ksi) — stronger than 95% of polymer grades. Strength varies by condition: see the 5 listed tempers.
Is PESU-GF30 GF30-HF easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 78% of polymer grades). Machinable with sharp carbide or PCD tools, high speed and light feeds with air/mist cooling; glass fiber is abrasive and the amorphous matrix is notch- and stress-crack sensitive, so avoid sharp internal corners and anneal (≈180–200 °C) before finish cuts.
Can PESU-GF30 GF30-HF be welded?
With care — weldability is rated fair (45/100). Joined by ultrasonic, hot-plate, vibration or laser welding and by solvent-free adhesive bonding; weld-line and joint strength are limited by fiber orientation, so mechanical fasteners or molded-in inserts are common for structural loads.
What surface finishes work on PESU-GF30 GF30-HF?
Natural amber-to-tan appearance with visible fiber read-through; can be pad printed, painted with compatible primers, laser marked, and metallized/plated after suitable etch, but no anodizing and only limited polishing.
Can PESU-GF30 GF30-HF be formed, bent or molded?
Dry pellets to <0.02 % (150 °C, 3–4 h desiccant) then injection mold at 340–380 °C melt with 140–180 °C tool; use high hot-runner temperatures, generous gates and hardened/plated screws and tooling because of fiber abrasion.
What is the maximum service temperature of PESU-GF30 GF30-HF?
PESU-GF30 GF30-HF is rated for continuous use to about 195°C (383 °F), and briefly to 250°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Ultrason E (PESU) product range and processing guide — BASF (2023)
- Veradel PESU glass-reinforced grades data sheets — Solvay Specialty Polymers (2022)
- Sumikaexcel PES glass-fiber reinforced grade data — Sumitomo Chemical (2021)
- CAMPUS ISO 10350 single-point data for PESU-GF30 compounds — CWFG / CAMPUS consortium (2024)
- ISO 527-1/-2, ISO 178, ISO 75-2, ISO 62, ISO 1133 — ISO (2019)
- UL 94 Tests for Flammability of Plastic Materials — UL Solutions (2021)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- (PES/PESU) (2026)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.