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Delrin (30% Glass Filled)
Material Type
Plastic
Material Name
Delrin (30% Glass Filled)
Process Compatibility
CNC Machining, Injection Molding
introduction
Delrin (30% Glass Filled) in CNC Machining
Delrin (30% Glass Filled) is a specific type of Delrin reinforced with 30% glass fiber filler. Delrin is also known as polyoxymethylene (POM), a high-performance engineering thermoplastic.
This reinforcement enhances the material's strength, stiffness, and resistance to wear. The addition of glass fibers makes the Delrin composite more rigid and provides improved performance in tensile strength and impact resistance compared to unfilled Delrin. This material has low friction and good dimensional stability. It’s easy to machine, but adding glass fibers may slightly affect machinability compared to unfilled Delrin.
We use carbide tools with sharp cutting edges to ensure a clean cut and machine it at higher speeds compared to metals. We adjust the speeds and feeds to find the perfect combination for efficient machining. Coolants are generally not required for machining Delrin, as the material has good thermal stability, but sometimes, we use mist coolant for better tool life and improved surface finish.
Properties
Properties Table of Delrin (30% Glass Filled)
| MECHANICAL PROPERTIES | |
|---|---|
| Ultimate Tensile Strength(UTS) | 145 MPa |
| Yield Strength(0.2% offset) | 120 MPa |
| Hardness | 124 Rockwell M |
| Flexural and Impact Strength | 210 MPa(Flexural) |
| Modulus of Elasticity | 4.1 GPa |
| Elongation at Break | 3.5% |
| Creep and Wear Resistance | Excellent |
| Machinability and Moldability | Good |
| Physical Properties | |
| UV Resistance | Good |
| Ductility and Flexibility | Low |
| Density and Weight | 1.6 g/cm³ |
| Chemical Resistance | Good |
| Porosity | Low |
| Thermal Properties | |
| Maximum Service Temperature | 120°C |
| Thermal Expansion Coefficient | 60-701 x 10^-6/°C |
| Thermal Conductivity | 0.34 W/(m·°C) |
| Electrical Properties | |
| Electrical Resistivity | 10^13-10^14 Ω·cm |
| ESD Safety | Good |
TECHNOLOGY OVERVIEW
Basic Knowledge of Delrin (30% Glass Filled)
What is Delrin (30% Glass Filled)?
Delrin (30% Glass Filled) belongs to the acetal family. It has excellent mechanical properties such as high stiffness, low friction, and good dimensional stability.
The "30% Glass Filled" designation indicates that the Delrin is a composite material reinforced with 30% glass fibers by weight. This reinforcement enhances its strength and impact resistance. It is easy to machine, durable, and resistant to wear and chemicals.
Advantages of Delrin (30% Glass Filled)
High strength and stiffness
Excellent dimensional stability
Low friction and wear
Good chemical resistance
Low moisture absorption
High impact resistance
Good machinability
Wide temperature range
FDA-compliant for certain grades
Electrical insulating properties
Applications of Delrin (30% Glass Filled)
Gears and bearings
Bushings
Automotive fuel system components
Medical device components
Aerospace components
Valve components
Timing screws
Fasteners
Printer components
Electronic connectors
Marine hardware
FAQ
Machining Delrin (30% Glass Filled) Buying FAQ
Delrin (30% Glass Filled) has high strength and stiffness. It is resistant to cracking under normal operating conditions. However, its performance can be influenced by temperature, stress, and environmental conditions.
Delrin (30% Glass Filled) is generally considered safe for various applications. However, like any material, handling it with care during the machining process is important. Excessive heat generation during machining may release fumes, so proper ventilation is recommended. Additionally, the material may generate fine particles during machining, necessitating appropriate personal protective equipment.
Delrin (30% Glass Filled) has a density greater than water, so it typically does not float. Instead, it tends to sink in water.
A cost-effective alternative to Delrin (30% Glass Filled) could be unfilled Delrin or other acetal copolymers with different filler percentages.
Delrin (30% Glass Filled) has a relatively high melting point, around 347°F (175°C). While it is possible to melt Delrin under controlled conditions, it is not a common practice due to the potential for degradation and loss of material properties. Machining processes involving cutting and shaping are typically preferred for working with Delrin (30% Glass Filled) rather than melting.
Other Materials
PET
PET stands for polyethylene terephthalate, a type of plastic commonly used in manufacturing beverage bottles, food packaging, and other consumer products.
More info about PET
PEI
A material that can maintain mechanical properties even in harsh conditions. PEI is best for electronic housings, connectors, electrical insulators, structural parts, and more.
More info about PEI
FR4
FR4 is a flame-retardant, glass-reinforced epoxy laminate used in CNC machining for its durability and electrical insulation properties.
More info about FR4
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