PA6T 6T/M-5T
Matrix
6T/M-5T = pA6T/M-5T copolymer
Copolymer using 2-methylpentamethylenediamine to depress Tm for easier processing while keeping high Tg and reflow resistance.
Values for the 6T/M-5T condition
Other PA6T grades and fills
PA6T is listed in 14 conditions; see the grade overview at PA6T.
Compare all 14 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Impact-modified / toughened | For snap fits, clips and cold-impact duty where the standard rigid PPA is too brittle. | 62 | 70 | 45 | 74 Shore D |
6T/M-5TThis page PA6T/M-5T copolymer | Copolymer using 2-methylpentamethylenediamine to depress Tm for easier processing while keeping high Tg and reflow resistance. | 90 | 95 | 25 | 85 Shore D |
PA6T/6I copolymer | Copolymer chemistry with isophthalic units for higher Tg, better surface gloss and lower moisture pickup; slower crystallization. | 92 | 95 | 12 | 86 Shore D |
UFDefault Unfilled / natural | Baseline unreinforced PPA for tough thin-wall parts, film/monofilament and as a base for compounding. | — | 100 | 20 | 95 HRM |
MF/GF-MF | Pick for flat, dimensionally isotropic parts and better surface appearance where peak strength is not required. | 115 | 115 | 2.5 | 88 Shore D |
15 % glass-fiber reinforced | Light reinforcement when some toughness and low warpage matter more than maximum stiffness. | — | 145 | 4 | — |
Internally lubricated (PTFE / silicone / graphite), often GF filled | Bearing/wear grade for hot dry-running bushings, gears and sliding contacts. | 155 | 155 | 2 | 87 Shore D |
ESD / conductive | For high-temperature ESD-safe fixtures, fuel-system parts and IC handling hardware. | 160 | 160 | 2 | 88 Shore D |
halogen-free flame-retardant, GF reinforced | Required for connectors/relay housings needing UL 94 V-0 at thin wall plus glow-wire performance. | — | 170 | 1.8 | — |
Heat-stabilized | Use for continuous 180–200 °C air aging (charge-air ducts, motor parts) where standard grades embrittle. | 195 | 195 | 2.4 | 90 Shore D |
30–33 % glass-fiber reinforced | The standard PPA grade for SMT connectors and under-hood parts needing lead-free reflow survival. | — | 200 | 2.5 | 105 HRM |
45 % glass-fiber reinforced | High-stiffness structural grade for metal replacement in hot, loaded brackets and housings. | — | 225 | 2 | — |
50 % glass-fiber reinforced | Maximum stiffness/creep resistance grade; most abrasive to tooling and hardest to fill in thin walls. | — | 240 | 1.8 | — |
30 % carbon-fiber reinforced | Choose for highest specific stiffness, low warpage and static-dissipative surface at reduced weight vs glass. | — | 245 | 1.6 | — |
What is PA6T 6T/M-5T?
PA6T 6T/M-5T is PA6T in the 6T/M-5T condition — copolymer using 2-methylpentamethylenediamine to depress Tm for easier processing while keeping high Tg and reflow resistance. PA6T 6T/M-5T has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 95 MPa (13.8 ksi) — stronger than 91% of polymer grades. Elongation at break is 25% and the elastic modulus is 3.1 GPa (0.45 Msi). PA6T 6T/M-5T has a density of 1.19 g/cm³ (0.043 lb/in³), heavier than 53% of polymer grades. Its glass-transition temperature is 128°C (262 °F). UF is the default condition FabDigit quotes; 6T/M-5T is available on request or by drawing note.
Advantages
- High strength — 90 MPa (13.1 ksi), better than 91% of polymer grades
- High service temperature — 140°C (284 °F), better than 76% of polymer grades
Limitations
- High embodied carbon — 8.5 kg CO₂/kg, worse than 85% of polymer grades
PA6T 6T/M-5T properties
Typical room-temperature values for PA6T 6T/M-5T; 27 are specific to this condition. Other listed values are PA6T reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
PA6T 6T/M-5T has a density of 1.19 g/cm³ (0.043 lb/in³), heavier than 53% of polymer grades. Its glass-transition temperature is 128°C (262 °F).
Mechanical16
PA6T 6T/M-5T has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 95 MPa (13.8 ksi) — stronger than 91% of polymer grades. Elongation at break is 25% and the elastic modulus is 3.1 GPa (0.45 Msi).
Thermal11
PA6T 6T/M-5T is rated for continuous service to 140°C (284 °F). It conducts heat at 0.25 W/m·K (0.144 BTU/hr·ft·°F), better than 72% of polymer grades. Thermal expansion is 70 µm/m·K (38.9 µin/in·°F).
Electrical7
PA6T 6T/M-5T is an electrical insulator with a dielectric strength of 28 kV/mm (711.2 V/mil) and a resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (76/100), worse than 64% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of PA6T 6T/M-5T takes about 150 MJ of energy and emits 8.5 kg of CO₂ — more than 84% of polymer grades. Typical recycled content is 0%.
Manufacturability7
PA6T 6T/M-5T's machinability is good (60/100, better than 51% of polymer grades); weldability fair (45/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PA6T 6T/M-5T
Is PA6T easy to machine?
Machines like a rigid nylon with sharp carbide tools and air/mist cooling; glass- and carbon-filled grades are abrasive, so use polycrystalline-diamond or coated carbide and expect fast edge wear.
Can PA6T be welded?
Ultrasonic, vibration, hot-plate and laser welding all work on unfilled and GF grades; solvent bonding is impractical, and heat-cured epoxy or hot-melt PA adhesives are used with plasma/flame surface activation.
Can PA6T be formed, bent or molded?
Injection mold at 315–345 °C melt with 130–160 °C mold and hot-runner or well-vented tooling; resin must be dried to <0.05 % moisture (80–100 °C, 4–8 h in a desiccant dryer) and residence time kept short to avoid gas and splay.
What surface finishes work on PA6T?
Accepts laser marking, pad printing and painting after plasma/primer treatment; LDS and plateable variants exist, and glass-fiber read-through can be masked with mineral hybrids or textured tool surfaces.
PA6T 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 |
|---|---|---|
| hexamethylenediamine (1,6-diaminohexane)diamine component, ~50 mol% of repeat units | ≈ 50 | 50 |
| terephthalic acid (6T) unitaromatic diacid giving high Tm/Tg; ≥50 mol% of the diacid fraction in commercial copolymers | 25 – 50 | 33 |
| adipic acid (66) or isophthalic acid (6Icomonomer used to lower Tm below decomposition; defines 6T/66 vs 6T/6I | 0 – 25 | 17 |
| glass fiber0 in default unfilled grade; 15–50 wt% in reinforced grades | ≈ 0 | 0 |
| heat stabilizer / lubricant / nucleant /typical additive package | 0.2 – 2 | 1 |
PA6T 6T/M-5T — frequently asked
What is PA6T 6T/M-5T used for?
PA6T 6T/M-5T is typically used for SMT electrical connectors, LED reflectors and high-heat automotive components. In short: reflow-capable high-heat nylon; most dimensionally stable polyamide; semi-aromatic connector resin.
What is the yield strength of PA6T 6T/M-5T?
PA6T 6T/M-5T has a typical yield strength of 90 MPa (13.1 ksi) and a tensile strength of 95 MPa (13.8 ksi) — stronger than 91% of polymer grades. Strength varies by condition: see the 14 listed tempers.
Is PA6T 6T/M-5T easy to machine?
Reasonably — machinability is rated good (60/100, better than 51% of polymer grades). Machines like a rigid nylon with sharp carbide tools and air/mist cooling; glass- and carbon-filled grades are abrasive, so use polycrystalline-diamond or coated carbide and expect fast edge wear.
Can PA6T 6T/M-5T be welded?
With care — weldability is rated fair (45/100). Ultrasonic, vibration, hot-plate and laser welding all work on unfilled and GF grades; solvent bonding is impractical, and heat-cured epoxy or hot-melt PA adhesives are used with plasma/flame surface activation.
What surface finishes work on PA6T 6T/M-5T?
Accepts laser marking, pad printing and painting after plasma/primer treatment; LDS and plateable variants exist, and glass-fiber read-through can be masked with mineral hybrids or textured tool surfaces.
Can PA6T 6T/M-5T be formed, bent or molded?
Injection mold at 315–345 °C melt with 130–160 °C mold and hot-runner or well-vented tooling; resin must be dried to <0.05 % moisture (80–100 °C, 4–8 h in a desiccant dryer) and residence time kept short to avoid gas and splay.
What is the maximum service temperature of PA6T 6T/M-5T?
PA6T 6T/M-5T is rated for continuous use to about 140°C (284 °F), and briefly to 210°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between PA6T UF and PA6T HS?
UF is the default condition — baseline unreinforced PPA for tough thin-wall parts, film/monofilament and as a base for compounding. HS: use for continuous 180–200 °C air aging (charge-air ducts, motor parts) where standard grades embrittle. Yield strength is 90 MPa in UF versus 195 MPa in HS.
Sources
- ISO 16396-1 Plastics — Polyamide (PA) moulding and extrusion materials — ISO (2022)
- JIS K 6920 Plastics — Polyamide (PA) moulding and extrusion materials — JSA (2018)
- Amodel PPA product and processing guides — Solvay/Syensqo (2023)
- Zytel HTN high-performance polyamide datasheets — DuPont/Celanese (2023)
- Grivory HT / Grilamid HT product range — EMS-Grivory (2022)
- CAMPUS plastics database — PPA (PA6T/66, PA6T/6I) datasets — CWFG (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
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.