PA6T
PA6T (Polyamide 6T) is a semi-aromatic polyamide produced by polycondensation of hexamethylenediamine and terephthalic acid, belonging to the PPA (polyphthalamide) family. Pure PA6T decomposes before melting (Tm ~370°C), so it must be copolymerized (e.g., PA6T/66), with commercial grades melting at ~310–325°C. PA6T is known for its extremely high HDT, low water absorption, and excellent high-temperature rigidity, making it the material of choice for automotive under-hood and electronic soldering applications.
Basic Parameters
|
Parameter |
Value |
|
Formula |
[-NH-(CH2)6-NH-CO-C6H4-CO-]n |
|
Melting Point (°C) |
310–325*°C |
|
Tg (°C) |
≈85°C |
|
Density (g/cm3) |
1.15–1.20 |
|
Water Absorption (%, 23°C/50%RH) |
0.3–0.5 |
|
Mold Shrinkage (%) |
0.2–0.6 |
|
Tensile Strength (MPa) |
170-210 |
|
Flexural Modulus (MPa) |
11000-12000 |
Performance Characteristics：
Extremely high HDT: up to 300–310°C at 1.8 MPa
Low water absorption: 0.3–0.5%, outstanding stability at high T/humidity
Excellent high-temperature rigidity: high strength retention >150°C
Good solder resistance: withstands lead-free reflow soldering
Excellent chemical resistance: oils, coolants, solvents
High continuous use temp: 150–170°C (5000h)
Good flame retardancy: some grades inherently FR
Product Series：
GF reinforced: GF30%–50% (mainstream)
Mineral-filled
Flame-retardant: halogen-free V0
Impact-modified
High-flow: thin-wall injection
Hydrolysis-resistant: automotive cooling
Application：
Automotive under-hood: intake manifolds, thermostat housings, sensor housings, connectors
Electronic connectors: SMT, USB/Type-C, FPC connectors
Electrical: circuit breakers, contactors, relays
Industrial: high-temp structural parts, pump parts, valve bodies
LED lighting: lamp holders, heat sink brackets
keywords: PA6T
classification: Product
PA6T (Polyamide 6T) is a semi-aromatic polyamide produced by polycondensation of hexamethylenediamine and terephthalic acid, belonging to the PPA (polyphthalamide) family. Pure PA6T decomposes before melting (Tm ~370°C), so it must be copolymerized (e.g., PA6T/66), with commercial grades melting at ~310–325°C. PA6T is known for its extremely high HDT, low water absorption, and excellent high-temperature rigidity, making it the material of choice for automotive under-hood and electronic soldering applications.
Basic Parameters
|
Parameter |
Value |
|
Formula |
[-NH-(CH2)6-NH-CO-C6H4-CO-]n |
|
Melting Point (°C) |
310–325*°C |
|
Tg (°C) |
≈85°C |
|
Density (g/cm3) |
1.15–1.20 |
|
Water Absorption (%, 23°C/50%RH) |
0.3–0.5 |
|
Mold Shrinkage (%) |
0.2–0.6 |
|
Tensile Strength (MPa) |
170-210 |
|
Flexural Modulus (MPa) |
11000-12000 |
Performance Characteristics：
Extremely high HDT: up to 300–310°C at 1.8 MPa
Low water absorption: 0.3–0.5%, outstanding stability at high T/humidity
Excellent high-temperature rigidity: high strength retention >150°C
Good solder resistance: withstands lead-free reflow soldering
Excellent chemical resistance: oils, coolants, solvents
High continuous use temp: 150–170°C (5000h)
Good flame retardancy: some grades inherently FR
Product Series：
GF reinforced: GF30%–50% (mainstream)
Mineral-filled
Flame-retardant: halogen-free V0
Impact-modified
High-flow: thin-wall injection
Hydrolysis-resistant: automotive cooling
Application：
Automotive under-hood: intake manifolds, thermostat housings, sensor housings, connectors
Electronic connectors: SMT, USB/Type-C, FPC connectors
Electrical: circuit breakers, contactors, relays
Industrial: high-temp structural parts, pump parts, valve bodies
LED lighting: lamp holders, heat sink brackets
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