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Polyolefins · Material guide

Glass-fibre PP (PP-GF)

Glass-fibre polypropylene: filament tensile yield of 46.6 MPa, more than double the carbon-fibre grade, at the cost of density rising to 1.12 g/cm3 and moisture uptake to 0.11 %. Priced…

3 product listings3 brands
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Understand the material

At a glance

Before you print

Setup difficulty
Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory
Nozzle wear
Highly abrasive — standard GF composite
Read conditions and sources ↓
Read the full material overview

Glass-fibre polypropylene: filament tensile yield of 46.6 MPa, more than double the carbon-fibre grade, at the cost of density rising to 1.12 g/cm3 and moisture uptake to 0.11 %. Priced from $46/kg, it is the cheapest fibre-reinforced engineering filament here.

Applications

PP-GF turns polypropylene into a firmer material for chemically resistant fixtures and equipment rather than flexible hinges. The PP matrix retains low water uptake, while the glass reinforcement supplies rigidity and helps printed parts retain their shape. Prusa demonstrates pipette stands and vial racks with Prusament PP Glass Fiber, making laboratory positioning hardware a concrete example of the material's role.

The benefit is stable support around compatible chemicals without the moisture conditioning changes associated with nylon. The costs include abrasive filament, a rough surface and poorer reproduction of tiny detail. Filled PP should not inherit unfilled PP's hinge behavior, and chemical resistance is not universal: check concentration and temperature for the actual fluid. The manufacturer also shows a printed exhaust-manifold shape solely as a visual example, which must not be mistaken for a service-temperature claim.

  • Pipette stands and vial racks ↗

    FDM · Prusament PP Glass Fiber Natural · Manufacturer-listed applications

    Prusa shows these as laboratory uses of PP Glass Fiber: rigidity holds the equipment in position while the PP matrix provides resistance to compatible chemicals and low moisture uptake. They are manufacturer application examples rather than a laboratory certification.

Sources
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Properties & source data

39 documented fields

Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.

Material & market8 fields
Glass-fibre PP (PP-GF) — Identity & Market
Property and unitPublished value and conditionsSources and dates
Base polymer / chemistryPolypropylene reinforced with chopped glass fibre
2 sources
Density (g/cm³)1.12 (Prusament PP Glass Fiber, ISO 1183) — the glass lifts it above water
1 source
Typical price (USD/kg)1 kg-equivalent spools cluster near 49
3 sources
Price range across brands (USD/kg)46-86 across brands; BCN3D PP GF30 46 at 700 g, BASF Ultrafuse PP GF30 49 at 2.2 kg, Prusament PP Glass Fiber 86 at 850 g
3 sources
Market availability (1–5)Available from several mainstream brands
3 sources
Spool sizes & diameters1.75 and 2.85 mm; 700 g, 850 g and 2.2 kg spools
3 sources
Typical applicationsStiff, chemically resistant parts where PP-CF's cost or conductivity is unwanted
1 source
Diameter tolerance (± mm)±0.04 (Prusament)
1 source
Print settings9 fields
Glass-fibre PP (PP-GF) — Printing Parameters
Property and unitPublished value and conditionsSources and dates
Nozzle temperature (°C)245 ± 10 (Prusament) — 25 °C below the carbon-fibre grade
2 sources
Bed temperature (°C)95 ± 10 (Prusament)
1 source
Enclosure / chamber requirement (1–5)Enclosure recommended — Simplify3D lists an enclosure as a hardware requirement and Polymaker advises one below 70 °C ambient to stop warping and cracking
2 sources
Part cooling fanOff — Prusa runs 0 % except 100 % on bridges
1 source
Maximum volumetric flow (mm³/s; see test conditions) (mm³/s)4 at Prusa's 50 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer
2 sources
Warping tendency (1–5)High — enclosure needed for reliable large parts; Prusa recommends a brim
1 source
Bed-adhesion difficulty (1–5)Very difficult — special plates or slurry required
1 source
Overall printing difficulty (1–5)Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory
1 source
Extruder requirementPrusa states a hardened nozzle is necessary and recommends a brim
1 source
Nozzle wear & reliability3 fields
Glass-fibre PP (PP-GF) — Hardware Wear & Reliability
Property and unitPublished value and conditionsSources and dates
Nozzle hardness required (1–4)Hardened steel required
1 source
Abrasiveness (1–5)Highly abrasive — standard GF composite
1 source
Nozzle clog risk (1–5)Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites
1 source
Moisture & drying4 fields
Glass-fibre PP (PP-GF) — Moisture Behaviour
Property and unitPublished value and conditionsSources and dates
Moisture absorption (hygroscopicity) (1–5)Low (0.1–0.3 %) — 0.11 % at both 24 h and 7 days, higher than the carbon-fibre grade's 0.04 % but still very low
2 sources
Equilibrium moisture content at ~50 % RH (%)0.11 after 24 h and 0.11 after 7 days at 24 °C / 22 % RH (Prusa Polymers)
1 source
Effect of moisture on strengthNot applicable in practice at 0.11 % equilibrium uptake
1 source
Storage requirementNo special storage needed
1 source
Strength & mechanical properties5 fields
Glass-fibre PP (PP-GF) — Mechanical Properties
Property and unitPublished value and conditionsSources and dates
Tensile strength (XY) (MPa)46.6 ± 1.3 filament tensile yield (Prusament, ISO 527) — more than double the carbon-fibre grade's 21
2 sources
Charpy impact, notched (kJ/m²)7.9 ± 0.4 printed horizontal and 9.9 ± 0.8 printed vertical XZ (ISO 179-1, notched)
1 source
Brittleness (1–5)Moderate
1 source
Hardness (scale-specific) (Shore A / Shore D / Rockwell)Rockwell R102 (and M95) on extruded unfilled PP stock (ASTM D785); no figure is published for a glass-fibre PP filament
1 source
Elasticity / flexibility (1–5)Rigid
1 source
Heat & temperature2 fields
Glass-fibre PP (PP-GF) — Thermal Properties
Property and unitPublished value and conditionsSources and dates
HDT at 0.45 MPa (°C)138.3 (ISO 75, 0.45 MPa)
1 source
HDT at 1.8 MPa (°C)112.6 (ISO 75, 1.8 MPa)
1 source
Weather & chemical resistance2 fields
Glass-fibre PP (PP-GF) — Environment & Chemical
Property and unitPublished value and conditionsSources and dates
Chemical resistanceExcellent against acids, alkalis and most solvents
1 source
Water / humidity resistance in service (1–5)Excellent — essentially unaffected
1 source
Health & safety3 fields
Glass-fibre PP (PP-GF) — Health & Safety
Property and unitPublished value and conditionsSources and dates
Fume toxicity (1–5)Low hazard — minimal VOC and particle emission. Inferred: no polyolefin was among the nine filaments in the Azimi chamber study, so this is a family-level judgement rather than a measurement
1 source
Ventilation / filtration requirement (1–5)Open a window / occasional ventilation. Inferred — no polyolefin was measured in the chamber study
1 source
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust
1 source
Solvents & solubility3 fields
Glass-fibre PP (PP-GF) — Solvents & Solubility
Property and unitPublished value and conditionsSources and dates
Soluble inNone at room temperature; chloroform dissolves the matrix at 60 °C and xylene at about 118 °C, leaving the fibre.
2 sources
Softened or crazed byXylene, decalin, CCl4 and chlorobenzene are heavily absorbed at 20 °C; oleum, chlorosulphonic acid and bromine destroy it.
1 source
Solvent welding & smoothing agentNone — nothing softens PP at room temperature, so joints have to be welded thermally rather than chemically.
1 source
How to read these values

Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.

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Product listings and datasheets

3 listings

Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.

Browse 3 products from 3 brands
BCN3DPP GF3046.27 USD/kg

EUR 29.99 incl. 19 % VAT / 700 g spool = EUR 42.84/kg = $46.27/kg at 1.08 USD/EUR, igo3d.com, Aug 2026

The BCN3D sheet reports its tensile, flexural and impact results in two unlabelled 100 %-infill columns (e.g. 14.6 and 35.8 MPa tensile), so no mechanical value can be attributed to a named orientation and none is recorded here.

Open product listing ↗
BCN3D PP GF30 — product-specific figures
Density (g/cm³)0.94 (ASTM D1505)
Nozzle temperature (°C)240 ± 10
Bed temperature (°C)30 ± 10, over fibre-reinforced PP strapping tape
Part cooling fan50 %
Bed surface & adhesion aidFibre-reinforced PP strapping tape (e.g. Scotch Extreme)
Hotend requirementHardened or ruby nozzle, 0.6 mm diameter or larger
Melting point / Vicat (°C)~167 melting point (ASTM D3418)
BASF Forward AMUltrafuse PP GF3049.09 USD/kg

EUR 99.99 incl. 19 % VAT / 2.2 kg spool = EUR 45.45/kg = $49.09/kg at 1.08 USD/EUR, igo3d.com, Aug 2026

The igo3d listing links an Owens Corning XSTRAND GF30-PP sheet, which is a different product; the values here come from Forward AM's own Ultrafuse PP GF30 TDS v2.3.

Open product listing ↗
BASF Forward AM Ultrafuse PP GF30 — product-specific figures
Density (g/cm³)1.066 printed part (1066 kg/m³, ISO 1183-1)
Nozzle temperature (°C)240–260
Bed temperature (°C)20–40 on PP strapping tape; 70–90 with a PPGF adhesive
Hotend requirementNozzle 0.6 mm or larger
Drying temperature & time60 °C for 4–16 h in a hot-air dryer or vacuum oven
Tensile strength (XY) (MPa)41.7 printed XY flat, 15.9 printed ZX upright (ISO 527)
Young's modulus (MPa)2628 printed XY flat, 2242 printed ZX upright (ISO 527)
Elongation at break (%)4.4 at break printed XY flat, 0.8 printed ZX upright (ISO 527)
Flexural strength (MPa)76.8 printed XY flat, 95.3 printed XZ on edge, 19.3 printed ZX (ISO 178)
Flexural modulus (MPa)3507 printed XY flat, 4026 printed XZ on edge (ISO 178)
Charpy impact, notched (kJ/m²)5.3 notched printed XY flat, 1.2 printed ZX (ISO 179-2)
Other impact dataCharpy unnotched 23.1 kJ/m² printed XY flat (ISO 179-2); Izod notched 5.6 kJ/m² (ISO 180)
Layer adhesion / Z tensile (MPa)15.9 printed ZX upright (ISO 527)
Z strength as % of XY (%)38 — 15.9 MPa upright against 41.7 MPa flat (ISO 527)
HDT at 0.45 MPa (°C)127 (ISO 75-2, 0.45 MPa)
HDT at 1.8 MPa (°C)73 (ISO 75-2, 1.8 MPa)
Glass transition (Tg) (°C)−5 (ISO 11357-2)
Melting point / Vicat (°C)158 melting point (ISO 11357-3)
Prusa PolymersPrusament PP Glass Fiber86.01 USD/kg

$73.11 / 850 g spool = $86.01/kg excluding VAT, 3djake.com, Aug 2026

Natural with NFC spool tag, 1.75 mm.

Open product listing ↗
Prusa Polymers Prusament PP Glass Fiber — product-specific figures
Density (g/cm³)1.12 (ISO 1183)
Diameter tolerance (± mm)±0.04
Nozzle temperature (°C)245 ± 10
Bed temperature (°C)95 ± 10
Equilibrium moisture content at ~50 % RH (%)0.11 after 7 days at 25 °C / 30 % RH
Tensile strength (XY) (MPa)40.3 ± 2.9 at yield (printed horizontal, ISO 527-1); filament 46.6
Young's modulus (MPa)2100 ± 100 (printed horizontal, ISO 527-1); vertical xz 2500
Elongation at break (%)4.5 ± 0.1 at yield (printed horizontal, ISO 527-1)
Flexural strength (MPa)50.2 ± 3.3 (printed horizontal, ISO 178); vertical xz 70.4
Flexural modulus (MPa)2100 ± 100 (printed horizontal, ISO 178); vertical xz 2700
Charpy impact, notched (kJ/m²)7.9 ± 0.4 (printed horizontal, ISO 179-1, notched); vertical xz 9.9
Other impact dataCharpy unnotched 17.6 kJ/m² horizontal, 26.9 kJ/m² vertical xz (ISO 179-1)
Layer adhesion / Z tensile (MPa)18 ± 1 (Prusa Polymers interlayer adhesion test)
Hardness (scale-specific) (Shore A / Shore D / Rockwell)68.5 ± 0.6 Shore D (Prusa Polymers method)
Z strength as % of XY (%)45 (interlayer adhesion 18 vs printed horizontal tensile 40.3)
HDT at 0.45 MPa (°C)138.3 (ISO 75 at 0.45 MPa)
HDT at 1.8 MPa (°C)112.6 (ISO 75, 1.8 MPa)

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