Heat-stabilised polyamide PA6 with 30 % glass fibre — Tarnamid® T-27 GF30

Description

Tarnamid® T-27 GF30 is a polyamide 6 (PA6) produced by Grupa Azoty (Tarnów, Poland), reinforced with 30 % glass fibre and heat-stabilised for service at elevated temperatures. The grade belongs to the Tarnamid® T-27 GF range (10–50 % glass fibre) and is intended for injection moulding of structural parts with high stiffness and strength. The base polymer is the medium-viscosity PA6 T-27, so the material fills moulds well, including thin-walled cavities, and can be combined with other Tarnamid® grades in one production flow.

In the dry state Tarnamid® T-27 GF30 shows a tensile modulus of 9 500 MPa and a tensile strength of 175 MPa; after conditioning (23 °C, 50 % RH) the values change to 5 700 MPa and 110 MPa — typical behaviour of glass-filled PA6 that must be considered in part design. The heat deflection temperature HDT/A is 200 °C per ISO 75-2 (1.8 MPa) and the melting temperature is 221 °C. Flammability rating HB (IEC 60695-11-10); for V-0 requirements the range includes a separate grade, T-27 GF30 FRV0.

Material Wizard supplies Tarnamid® T-27 GF30 in Ukraine in natural and black (subject to availability), in the manufacturer's standard 25 kg bags, with Grupa Azoty technical documentation. On request we provide technical support on processing, moulding parameters and substitution with comparable grades.

Key properties

• 30 % glass fibre — tensile modulus 9 500 MPa and tensile strength 175 MPa in the dry state (ISO 527)
• Heat-stabilised formulation — resistance to thermo-oxidative ageing in continuous service up to 120–130 °C, short-term higher (to be verified on the part)
• HDT/A 200 °C per ISO 75-2 (1.8 MPa), VST/B/50 215 °C — dimensional stability under load at elevated temperature
• Charpy notched impact strength 13 kJ/m² at 23 °C and 8 kJ/m² at –30 °C (dry) — predictable low-temperature behaviour
• MVR 45 cm³/10 min (275 °C / 5 kg) — good flow for thin-walled and complex parts
• Low shrinkage of 0.3 % in flow direction — accurate geometry for tight-tolerance parts; shrinkage anisotropy (0.9 % across flow) must be accounted for in mould design
• High chemical resistance to oils, fuels and many solvents, typical of PA6; the specific medium requires verification
• Good electrical insulation in the dry state; moisture absorption of 1.9 % (23 °C, 50 % RH) affects electrical properties and dimensions

Applications

• Automotive: brackets, sensor and connector housings, covers, cooling and air-intake system components
• Electrical engineering: circuit-breaker housings, terminal blocks, socket and contactor parts where stiffness and heat resistance matter
• Machine building: gears, pulleys, levers, guides, gearbox and pump housings
• Household appliances and power tools: housings, motor mounts, fan impellers
• Furniture hardware and construction fasteners: chair bases, hinges, high-load plugs and anchors

Processing recommendations

Injection moulding. Pre-drying is mandatory: 80 °C for 4–6 h in a dehumidifying dryer to a residual moisture of no more than 0.1–0.2 %. Typical barrel temperature profile 250–280 °C, mould temperature 80–100 °C (higher values give better surface quality and higher crystallinity). Use a screw and nozzle resistant to glass-fibre abrasion; regrind up to 20–25 % provided it is dried. These settings are general for the PA6 GF30 class; exact parameters for a specific part should be aligned with the manufacturer's data sheet and confirmed by trial moulding.

Alternative from Material Wizard

For projects that require local availability, formulation flexibility or supply continuity, we offer our own grade Examid® PA6 GF30 — a glass-filled, heat-stabilised polyamide 6 made in Ukraine, comparable in key mechanical and thermal properties. For cost-driven applications the recycled grade Examid® PA6 GF30 BK R is available. Material Wizard engineers will help select the material and qualify the substitution on your part.