PET CF30
Reinforced grade
also Arnite A, Hostadur
CF30 = 30% Carbon Fiber
PET compounded with 30 wt% chopped carbon fiber for very high stiffness, low creep, low mold shrinkage and static-dissipative/conductive behavior.
Values for the CF30 condition
Other PET grades and fills
PET is listed in 7 conditions; see the grade overview at PET.
Compare all 7 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Post-consumer recycled PET | Cost- and footprint-driven choice for sheet, strapping, fiber and non-critical mouldings; IV and colour vary batch to batch. | 55 | 60 | 25 | 83 Shore D |
TX | Pick for unlubricated sliding: bushings, wear pads and guides where low friction and long wear life beat maximum strength. | 60 | 6 | 83 Shore D | |
Impact-modified / toughened PET | Use when snap-fits, clips or impact-loaded housings need toughness that plain or glass-filled PET cannot supply. | 100 | 105 | 5 | 87 Shore D |
Flame-retardant UL 94 V-0 grade | Choose where a UL 94 V-0 rating at 0.8–1.6 mm is mandatory, e.g. electrical connectors, coil bobbins and switch bodies. | 135 | 2 | ||
30 % glass-fiber reinforced, heat-stabilized injection grade | Use for stiff, dimensionally stable structural mouldings needing 200 °C-class heat resistance (housings, connectors, under-hood brackets). | 160 | 2.5 | 100 HRM | |
45 % glass-fiber reinforced high-modulus grade | For maximum stiffness and creep resistance in thin-wall metal-replacement parts; brittle and abrasive to tooling. | 185 | 2 | ||
CF30This page 30% Carbon Fiber | PET compounded with 30 wt% chopped carbon fiber for very high stiffness, low creep, low mold shrinkage and static-dissipative/conductive behavior. | 200 | 1.8 | 100 HRM |
What is PET CF30?
PET CF30 is PET in the CF30 grade — pET compounded with 30 wt% chopped carbon fiber for very high stiffness, low creep, low mold shrinkage and static-dissipative/conductive behavior. PET CF30 has a yield strength of 80 MPa (11.6 ksi) and a tensile strength of 200 MPa (29 ksi) — stronger than 88% of polymer grades. Elongation at break is 1.8% and the elastic modulus is 21 GPa (3.05 Msi). PET CF30 has a density of 1.46 g/cm³ (0.0527 lb/in³), heavier than 86% of polymer grades. Its glass-transition temperature is 79°C (174 °F).
Advantages
- Stiff — 21 GPa (3.05 Msi), better than 100% of polymer grades
- Conducts heat well — 0.6 W/m·K (0.347 BTU/hr·ft·°F), better than 99% of polymer grades
- Low, predictable mold shrinkage — 0.15%, better than 97% of polymer grades
- Tough — resists crack growth — 4 MPa·√m (3.64 ksi·√in), better than 92% of polymer grades
- High strength — 80 MPa (11.6 ksi), better than 88% of polymer grades
Limitations
- Limited ductility — 1.8%, worse than 97% of polymer grades
- Limited formability — 10/100, worse than 87% of polymer grades
- Heavy — 1.46 g/cm³ (0.0527 lb/in³), worse than 86% of polymer grades
- Needs corrosion protection — 70/100, worse than 78% of polymer grades
- Difficult to machine — 45/100, worse than 78% of polymer grades
PET CF30 properties
Typical room-temperature values for PET CF30; 39 are specific to this condition. Other listed values are PET reference data and may not represent this condition. Bars are the position among polymer grades.
Physical7
PET CF30 has a density of 1.46 g/cm³ (0.0527 lb/in³), heavier than 86% of polymer grades. Its glass-transition temperature is 79°C (174 °F).
Mechanical17
PET CF30 has a yield strength of 80 MPa (11.6 ksi) and a tensile strength of 200 MPa (29 ksi) — stronger than 88% of polymer grades. Elongation at break is 1.8% and the elastic modulus is 21 GPa (3.05 Msi).
Thermal11
PET CF30 is rated for continuous service to 150°C (302 °F). It conducts heat at 0.6 W/m·K (0.347 BTU/hr·ft·°F), better than 99% of polymer grades. Thermal expansion is 15 µm/m·K (8.33 µin/in·°F).
Electrical7
PET CF30 is an electrical insulator with a dielectric strength of 22 kV/mm (558.8 V/mil) and a resistivity of 100 Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (70/100), worse than 78% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of PET CF30 takes about 105 MJ of energy and emits 6.5 kg of CO₂ — more than 54% of polymer grades. Typical recycled content is 0%.
Manufacturability7
PET CF30's machinability is fair (45/100, worse than 78% of polymer grades); weldability poor (25/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PET CF30
Is PET easy to machine?
Machines like a free-cutting engineering plastic: sharp positive-rake carbide, high speed, light finishing passes and air/mist cooling give excellent surface finish and tight tolerances; watch for stress relief in thick stock (anneal before finish cuts).
Can PET be welded?
No solvent bonding — join by ultrasonic, hot-plate, IR or laser welding, or use cyanoacrylate/epoxy after abrasion/plasma treatment; mechanical fastening and self-tapping screws work well.
Can PET be formed, bent or molded?
Dry pellets to <0.02 % moisture (150 °C, 4 h desiccant) to avoid hydrolytic IV loss; melt 265–295 °C with hot mold 100–145 °C for full crystallization, or chilled mold/copolyester for clear amorphous APET sheet that thermoforms readily.
What surface finishes work on PET?
Takes machining, printing, hot stamping and vacuum metallizing well after corona/flame or plasma pre-treatment; can be laser-marked, but paint adhesion needs a primer and no plating/anodizing applies.
PET 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 |
|---|---|---|
| isophthalic acid / CHDM comonomerin bottle/APET copolyester grades to suppress crystallization | 0 – 3 | 1.5 |
| glass fiber0 in default unfilled grade; 15–45 % in GF variants | 0 – 45 | 0 |
| solid lubricant (PTFE/other)TX bearing grades | 0 – 20 | 0 |
| flame retardant + synergistFR V-0 grades | 0 – 20 | 0 |
| nucleant / heat stabilizer / mold releasstandard additive package | 0 – 3 | 0.5 |
| ethylene terephthalate repeat unit (–C10polycondensate of purified terephthalic acid (PTA) or DMT with mono-ethylene glycol; Sb/Ti/Ge catalyst residues at ppm level | balance |
PET CF30 — frequently asked
What is PET CF30 used for?
PET CF30 is typically used for precision machined mechanical components, slide bearings and wear strips, pump and valve parts, electronic structural parts, beverage bottles and food packaging film. In short: durable industrial PET.
What is the yield strength of PET CF30?
PET CF30 has a typical yield strength of 80 MPa (11.6 ksi) and a tensile strength of 200 MPa (29 ksi) — stronger than 88% of polymer grades. Strength varies by condition: see the 7 listed tempers.
Is PET CF30 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 78% of polymer grades). Machines like a free-cutting engineering plastic: sharp positive-rake carbide, high speed, light finishing passes and air/mist cooling give excellent surface finish and tight tolerances; watch for stress relief in thick stock (anneal before finish cuts).
Can PET CF30 be welded?
Not readily — weldability is rated poor (25/100). No solvent bonding — join by ultrasonic, hot-plate, IR or laser welding, or use cyanoacrylate/epoxy after abrasion/plasma treatment; mechanical fastening and self-tapping screws work well.
What surface finishes work on PET CF30?
Takes machining, printing, hot stamping and vacuum metallizing well after corona/flame or plasma pre-treatment; can be laser-marked, but paint adhesion needs a primer and no plating/anodizing applies.
Can PET CF30 be formed, bent or molded?
Dry pellets to <0.02 % moisture (150 °C, 4 h desiccant) to avoid hydrolytic IV loss; melt 265–295 °C with hot mold 100–145 °C for full crystallization, or chilled mold/copolyester for clear amorphous APET sheet that thermoforms readily.
What is the maximum service temperature of PET CF30?
PET CF30 is rated for continuous use to about 150°C (302 °F), and briefly to 220°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PET CF30?
Yes — PET CF30 is available for CNC machining, sheet metal and injection molding with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Ertalyte / Ertalyte TX PET-P stock shapes datasheet — Mitsubishi Chemical Advanced Materials (Quadrant) (2022)
- Rynite PET thermoplastic polyester resin product & molding guide — DuPont / Celanese (2021)
- Arnite A (PET) grade datasheets — Envalior / DSM Engineering Materials (2023)
- CAMPUS plastics database — PET unfilled and GF grades — CWFG / CAMPUS consortium (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- ASTM D5927 — Standard Specification for Thermoplastic Polyester (TPES) Molding and Extrusion Materials — ASTM (2021)
- ISO 7792-1/-2 — Plastics, thermoplastic polyester (TP) moulding and extrusion materials — ISO (2012)
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.