What tolerances can Delrin machining achieve?

Standard work holds ±0.01-0.02mm. Precision work holds ±0.005mm. Delrin's low moisture absorption and good thermal stability make it excellent for close-tolerance parts.

How does Delrin compare to Nylon?

Delrin has lower moisture absorption, better dimensional stability, and lower friction. Nylon has better impact resistance and toughness. Delrin is preferred for precision parts and bearing surfaces.

Can Delrin be bonded or welded?

Delrin is difficult to bond with adhesives. Mechanical fastening or heat staking is used. Ultrasonic welding is possible but requires specific joint design.

What industries use CNC Delrin machining?

Precision mechanical components, electronics, automotive, medical instruments, and industrial equipment. Delrin is used where dimensional stability and low friction are required.

Is Delrin FDA-compliant?

Yes, Delrin is FDA-compliant for food contact and is available in FDA grades for food processing and packaging applications.

CNC Delrin

CNC Delrin machining is the precision processing of acetal homopolymer (Delrin) using computer-controlled cutting tools. Delrin is a high-performance engineering plastic with excellent dimensional stability, low friction, high strength, and good wear resistance. It is one of the most machinable engineering plastics.

Delrin machines exceptionally well with sharp carbide tooling, producing continuous chips that require proper evacuation. It has good thermal stability and low moisture absorption, making it dimensionally stable for precision parts. Tolerances are held to ±0.01-0.02mm standard. Applications include precision components, gears and mechanical drives, electronics, automotive, and medical.

Our CNC Machining Services

From prototype to production — reliable quality, on-time delivery

We provide precision CNC machining services for a wide range of materials including aluminum, steel, stainless steel, copper, brass, titanium, PEEK, PTFE, acetal, nylon, and other engineering plastics. Our manufacturing capabilities cover 3-axis, 4-axis, and 5-axis CNC milling, as well as CNC turning, suitable for both prototype development and high-volume production runs.

With ISO 9001:2015 certification and a commitment to quality, we serve customers across aerospace, automotive, medical, electronics, industrial equipment, and consumer goods industries. Our in-house capabilities include surface finishing, anodizing, powder coating, heat treatment, and inspection with CMM and optical measurement equipment.

We offer competitive pricing, flexible lead times, and full material traceability. From simple brackets to complex precision components, we deliver parts that meet your specifications with reliable quality and on-time delivery.

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Materials

Aluminum 5083-H111

Aluminum 5083-H111 | 3.3547 | 54300| AlMg4.5Mn0.7

Aluminum 5083 (CNC) is a strain hardening aluminum alloy with excellent corrosion resistance. Suitable for marine applications. Can be welded.

Understand Aluminum 5083-H111

Aluminum 6063

Aluminum 6063 | EN AW-6063 | 62400| AlMg0,7Si

Aluminum 6063 has good mechanical properties and can be heat treated. Suitable for aerospace applications. Can be welded.

Understand Aluminum 6063

Aluminum 5052

Aluminum 5052 | EN AW-5052 | 3.3523 | AlMg2,5

Aluminum 5052 is a strain hardening aluminum alloy with excellent corrosion resistance. Suitable for marine applications. Can be welded.

Understand Aluminum 5052

Aluminum 2024-T351

Aluminum 2024-T351 | 3.1355 | 24530 | AlCu4Mg1

Aluminum 2024 is a high-strength alloy with excellent fatigue resistance. Suitable for aerospace applications.

Understand Aluminum 2024-T351

Aluminum 7050

Aluminum 7050 | EN AW-7050 | 3.4144| AlZn6CuMgZr

Aluminum 7050 has excellent mechanical properties with good ductility, high strength, toughness and good resistance to fatigue. Suitable for aerospace applications.

Understand Aluminum 7050

Aluminum MIC-6

Aluminum MIC6

Aluminum MIC6 is a light weight material that can be easily machined at high speed and is free from tension, contaminants and porosity.

Understand Aluminum MIC-6

Aluminum 6082-T651

Aluminum 6082-T651 | 3.2315 | 64430 | AlSi1MgMn

Aluminum 6082-T651 (CNC) has very similar composition and properties to 6061, with slightly higher tensile strength. Compliant with British Standards.

Understand Aluminum 6082-T651

Aluminum 2017A

Aluminum 2017A | 3.1325 | 24530 | AlCu4MgSi

Aluminum 2017 has a higher ductility and formability than Aluminum 2014 and has intermediate strength.

Understand Aluminum 2017A

Aluminum 7075-T651

Aluminum 7075-T651 | 3.4365 | 76528 | AlZn5.5MgCu

Aluminum 7075-T651(CNC) is an aerospace-grade material with excellent strength-to-weight ratio and strength and hardness comparable to steels. T651 is the temper of Aluminum 7075, and to achieve this temper, the alloy is solution heat-treated, stress relieved, and then artificially aged.

Understand Aluminum 7075-T651

Aluminum 2014

Aluminum 2014 | 3.1255 | 24345 | AlCu4SiMg

Aluminum 2014 is easily machined and can be hardened to get strengths comparable to steel, but is prone to corrosion. Suitable for aerospace applications.

Understand Aluminum 2014

Aluminum 6061-T651

Aluminum 6061-T651 | 3.3211 | 65028 | AlMg1SiCu

Aluminum 6061-T651 is commonly used in aerospace, automotive and construction industry, as it is valued for its high strength, excellent machinability, and good weldability. The "T651" designation indicates that the material has been heat-treated to a specific level of hardness.

Understand Aluminum 6061-T651

Aluminum 7075-T7351

Aluminum 7075-T7351 | 3.4365 | 76528 | AlZn5.5MgCu

Aluminum 7075-T7351 is commonly used in aerospace and defense applications, as well as automotive and transportation, as it is valued for its high strength, excellent machinability and good fatigue resistance. The "T7351" designation indicates that the material has been heat-treated to a specific level of hardness.

Understand Aluminum 7075-T7351

Aluminum 6061-T6

Aluminum 6061-T6 | 3.3211| 65028| AlMg1SiCu

Aluminum 6061 (CNC) is the most popular aluminum alloy. It has good strength-to-weight ratio, excellent machinability and natural corrosion resistance.

Understand Aluminum 6061-T6

Aluminum 6082

Aluminum 6082 | 3.2315 | 64430| AlSi1MgMn

Aluminum 6082 (CNC) has very similar composition and properties to 6061, with slightly higher tensile strength. Compliant with British Standards.

Understand Aluminum 6082

Aluminum 6060

Aluminum 6060 | 3.3206 | AlMgSi

Alloy 6060 offers good strength, relatively good corrosion resistance and is suitable for decorative anodizing.

Understand Aluminum 6060

Aluminum 7075-T6

Aluminum 7075-T6 | 3.4365 | 76528 | AlZn5,5MgCu

Aluminum 7075-T6 (CNC) is an aerospace-grade material with excellent strength-to-weight ratio and strength and hardness comparable to steels.

Understand Aluminum 7075-T6

Applications

Precision Components

Bushings and sleeve bearings
Cam and follower components
Sliding and bearing surfaces
Precision guide rails

Gears & Mechanical Drives

Precision gears and pinions
Rack and pinion drives
Lead screws and nuts
Timing belt pulleys

Electronics

Connector housings and contacts
Electrical insulators
Printed circuit board fixtures
Test sockets and probe holders

Automotive

Fuel system components
Sensor housings and brackets
Interior mechanical components
HVAC system parts

Medical

Surgical instrument components
Sterilizable instrument parts
Laboratory equipment components

Capabilities

We machine Delrin (acetal homopolymer) for high-precision parts. Equipment includes CNC milling and turning centers with sharp carbide tooling. Excellent dimensional stability and low friction. Tolerances held to ±0.01-0.02mm standard, ±0.005mm precision. ISO 9001:2015 certified.

Finishes

As-Machined

Standard finish for Delrin parts
Smooth, low-friction surface
Ra 0.8 – 1.6μm typical

Bead Blasting

Uniform matte texture
Used for industrial parts
Removes tool marks

Brushing

Directional grain pattern
Used for visible parts
Smooths surface

Polishing

High-gloss reflective finish
Used for visible components
Ra 0.4μm achievable

Tumbling

Edge deburring
Surface smoothing on large quantities

Technical Specs

Property	Delrin (Acetal Homopolymer)
Tensile Strength (MPa)	70-80
Yield Strength (MPa)	60-70
Elongation at Break (%)	15-30
Hardness (Shore D)	85-90
Density (g/cm³)	1.41
Modulus of Elasticity (GPa)	3.0
Melting Point (°C)	175-180
Water Absorption (%)	0.2-0.3
Coefficient of Friction	0.15-0.25
Machinability Rating	Excellent

Parameter	Capability
Max Part Size (Milling)	2,000mm x 800mm x 600mm
Max Part Size (Turning)	600mm diameter x 1,500mm length
Standard Tolerance	±0.01 – 0.02mm
Precision Tolerance	±0.005mm
Surface Finish (As-Machined)	Ra 0.8 – 1.6μm
Surface Finish (Precision)	Ra 0.4μm

FAQs

What is Delrin and why is it used in CNC machining?

Delrin is acetal homopolymer, one of the most machinable engineering plastics. It offers excellent dimensional stability, low friction, high strength, and good wear resistance. It is used for precision components, gears, bushings, and mechanical parts.
What tolerances can Delrin machining achieve?

Standard work holds ±0.01-0.02mm. Precision work holds ±0.005mm. Delrin's low moisture absorption and good thermal stability make it excellent for close-tolerance parts.
How does Delrin compare to Nylon?

Delrin has lower moisture absorption, better dimensional stability, and lower friction. Nylon has better impact resistance and toughness. Delrin is preferred for precision parts and bearing surfaces.
Can Delrin be bonded or welded?

Delrin is difficult to bond with adhesives. Mechanical fastening or heat staking is used. Ultrasonic welding is possible but requires specific joint design.
What industries use CNC Delrin machining?

Precision mechanical components, electronics, automotive, medical instruments, and industrial equipment. Delrin is used where dimensional stability and low friction are required.
Is Delrin FDA-compliant?

Yes, Delrin is FDA-compliant for food contact and is available in FDA grades for food processing and packaging applications.