CNC Engineering Plastics
Engineering Plastics are a class of high performance polymer materials with excellent mechanical properties, heat resistance, chemical resistance and dimensional stability. They are widely used in automotive, electronics, medical, aerospace, industrial manufacturing and other fields, especially for CNC machining to manufacture high-precision parts.
Excellent Machinability
Heat Resistant
Light Weight
Lead Time
5~7 days
Density
1.2-1.6 g/cm³
Typical Tolerance
±0.1 mm
Max Size
3600 x 2500 x 600 mm
Material Profile
Why Engineering Plastics Make Sense for CNC Machining
Light weight and easy to machine
Engineering plastics are much lighter than metals and can be CNC machined into complex parts with low cutting resistance.
Good chemical resistance
Materials such as POM, PTFE, PEEK, and nylon resist many chemicals, oils, and solvents depending on the selected grade.
Excellent electrical insulation
Most engineering plastics provide good dielectric properties, making them suitable for insulators, fixtures, electronic housings, and test components.
Low friction and wear resistance
Plastics such as POM, PTFE, and nylon are suitable for bushings, guides, rollers, and sliding parts that need low friction.
Performance Snapshot
Material Characteristics at a Glance
Relative performance profile across key engineering parameters. Values are contextual — not absolute stress ratings.
Detail
MediumSource score: 3/5
Strength
HighSource score: 4/5
Flexibility
HighSource score: 4/5
Benefits
- Light weight and high strength
- Chemical resistance
- Wear-resistant & self-lubricating
- High temperature resistance
- Electrical insulation
- High toughness & Impact resistance
- Easy to process and customize
Limitations
- High thermal expansion
- Low rigidity
- Easy to absorb moisture
- Poor solvent resistance
- Easy to crack
- Higher cost
Technical Specifications
CNC Engineering Plastics Family Data
Material Properties
Machining Rules
Available Finishes
Finishes That Make Sense For Engineering Plastics
Polishing
Smooths machined plastic surfaces to improve clarity, appearance, and touch quality depending on the material.
Bead Blasting
Creates a uniform matte texture and helps reduce visible tool marks on suitable plastic parts.
Painting
Adds color, branding, or surface protection to machined plastic parts after proper surface preparation.
Vapor Polishing
Uses controlled vapor exposure to improve surface smoothness and optical clarity on compatible plastics.
Compare & Decide
Pick A Different CNC Family
Heat & Chemical Resistance
CNC Ceramics
CNC Ceramic materials refer to ceramic materials precisely machined by CNC machining technology (such as CNC cutting, engraving, grinding). Because of its high hardness, high wear resistance, high temperature stability and excellent chemical inertness, this kind of material is widely used in aerospace, electronics, medical, semiconductor and precision machinery and other fields.
Electrical Insulation
CNC Insulation Material
CNC Insulation Material refers to a material commonly used in CNC machining for electrical insulation and thermal insulation. This kind of material usually has high resistivity, high temperature resistance, chemical corrosion resistance, high mechanical strength characteristics, suitable for electronic, mechanical, electrical equipment, aerospace and other fields.
Flexible & Resilient
CNC Rubber
CNC Rubber is a class of elastic materials commonly used in applications requiring high elasticity, compression resistance and shock absorption. Compared with metal and engineering plastics, rubber has excellent softness, wear resistance, sealing and fatigue resistance. When CNC machining rubber materials, special attention needs to be paid to their softness and elastic characteristics to ensure cutting accuracy and performance.
Next Step
Ready To Machine Engineering Plastics Parts?
Upload CAD and include a 2D drawing for tolerance-critical features, threads, finish requirements and inspection notes.
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