Material
PA12 Nylon
PA12 Nylon is selected from its stiffness, recovery, wear, wet-service, chemical, and temperature behavior. For brush stiffness, do not give only the material name. Filament diameter, free trim, density, grade, and service conditions must be specified together.
Material Overview
PA12 is a long-chain polyamide noted for low moisture absorption, hydrolysis resistance and resistance to many oils, fuels and greases.
In a finished brush, PA12 Nylon does not create a fixed stiffness by itself. Filament diameter, trim length, density, tuft layout, and installed contact determine working force, while grade and environment affect durability and recovery.
Material Properties
| Density | 1.01–1.03 g/cm³ |
|---|---|
| Melting point | 175–180°C |
| Water absorption at saturation | 0.7–1.5% |
| Shore hardness | D 70–78 |
| Filament diameter | 0.08–2.00 mm |
Brush Applications
For PA12 Nylon, directly related brush structures include Handheld Detail Brushes, Tube & Pipe Bore Brushes, Roller and Conveyor Brushes, and Polishing Buffing Wheels. Applications related to PA12 Nylon include Industrial Machine Cleaning, Dust Removal, Brick, Tile & Building Material Machine Brush Use, and Laboratory Tube Cleaning.
Specification and Customization
Material form
Filament
Common forms
Filament.
Grade
Low-moisture-absorption PA12 brush-filament grade
Reference standard
ISO 527-1:2019; ASTM D638; ISO 62:2008; ASTM D570-22; ISO 868:2003; ASTM D2240-15(2021); ISO 4892-3:2024; ASTM G154-23; UL 94
Limitations and Alternatives
PA12 is more flexible and has less heat margin than firmer PA66 grades, so it is not the default choice for high-load hot scrubbing.
Frequently Asked Questions
What are the key properties of PA12 Nylon brush material?
PA12 is a long-chain polyamide noted for low moisture absorption, hydrolysis resistance and resistance to many oils, fuels and greases. Direct data: Density: 1.01–1.03 g/cm³; Melting point: 175–180°C; Water absorption at saturation: 0.7–1.5%; Shore hardness: D 70–78; Filament diameter: 0.08–2.00 mm.
Where is PA12 Nylon used in cleaning brushes?
Flexible wet-service, fuel- or oil-contact and low-moisture brush applications where impact resistance matters.
How does filament geometry change PA12 Nylon brush stiffness?
PA12 Nylon changes brush stiffness through filament diameter, free trim, density, crimp, and contact. Use finer filament and longer trim for conformable contact; use coarser filament, shorter trim, or higher density for stronger displacement or cutting.
When should PA12 Nylon be replaced by another material?
Compare PA12 Nylon with PP, PBT, PET. Change material when wet stiffness, temperature, chemical resistance, conductivity, particle shedding, or surface marking becomes the limiting factor.
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