Delrin (30% Glass Filled)

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.

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145 MPa

Ultimate Tensile Strength(UTS)
120 MPa

Yield Strength(0.2% offset)
124 Rockwell

Hardness
210 MPa

Flexural and Impact Strength

At a Glance

Material Type
Plastic
Material Name
Delrin (30% Glass Filled)
Process Compatibility
CNC Machining, Injection Molding

Properties Table of Delrin (30% Glass Filled)

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

Applications of Delrin (30% Glass Filled)

Gears and bearings
Bushings
Automotive fuel system components
Medical device components
Aerospace components
Valve components
Timing screws
Fasteners

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

Raw Stock

CNC Machined

Finished Parts

Delrin 30 Glass Filled — Machining Notes

Delrin (30% Glass Filled
is Delrin (30% Glass Fil

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.

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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.

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FAQ

Does Delrin (30% Glass Filled) crack easily?

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.

What are the dangers of Delrin (30% Glass Filled)?

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.

Does Delrin (30% Glass Filled) sink in water?

Delrin (30% Glass Filled) has a density greater than water, so it typically does not float. Instead, it tends to sink in water.

What is a cheap alternative to Delrin (30% Glass Filled)?

A cost-effective alternative to Delrin (30% Glass Filled) could be unfilled Delrin or other acetal copolymers with different filler percentages.

Can you melt Delrin (30% Glass Filled)?

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.