Acetal Fabrication and Machining

Acetal Fabrication and Machining

Ehren-Haus Industries machines and fabricates high quality custom Acetal parts and components for industrial applications. We specialize in plastic fabrication services, and have earned a positive reputation for fabricating both standard and custom acetal parts built to customer specifications. All parts manufactured meet the highest standards of quality and performance.

What is Acetal?

Acetal is a semi-crystalline and rigid engineered thermoplastic that is widely used for building parts that demand stiffness, excellent dimensional stability, and low surface friction. Acetal is also referred to as polyoxymethylene (POM) and polyacetal and is available in homopolymer and copolymer compounds. The property of dimensional stability enables the plastic to maintain its original dimensions even upon exposure to high temperature and pressure. Acetal material is ideal for building parts that require high rigidity as well as high mechanical strength. The material can be used for machining parts that need tight tolerances.

Learn more about the properties of Acetal

What Sets Ehren-Haus Apart?

Ehren-Haus utilizes advanced CNC machining technologies when it comes to machining acetal. Our in-depth understanding of the material and machining capabilities enable us to assure precision in the first attempt with minimal efforts and near-zero material waste. Our CNC machining capabilities enable us to machine extremely complex parts in a single operation and this allows us to assure the fastest turnaround times in the industry. Owing to all the reasons Ehren-Haus is the number one source for our clients for acetal plastic fabrication services. We utilize model-based definition or digital product definition processes, which allow us to create parts directly from CAD models.

What is Our Process?

We accept files in CAD, DXF, and IGS formats, and each design is carefully reviewed by our team. They suggest changes wherever needed and often these changes have helped clients reduce their overall cost of production and accelerate time-to-market.

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    Custom Acetal Fabrication Services

    At Ehren-Haus, we have been serving clients with high-precision parts. We believe the capabilities that we have developed in the following acetal fabrication services have helped us serve our clients better.

    Acetal Machining

    We specialize in precision acetal CNC machining services such as CNC milling, CNC turning, and CNC routing. We can machine acetal parts with precision tolerances up to +/-0.005". We can machine parts in quantities from prototypes to full volume production runs.

    Acetal Thermoforming

    Delrin is the only thermoforming acetal resin in the world and we provide Delrin thermoforming services. Delrin sheets are heated to a certain temperature and molten plastic is made to assign a specific shape by pouring into molds. This technique is quite easy and requires no additional equipment or force.

    Properties of Copolymer and Homopolymer Acetals

    Although copolymer and homopolymer grades possess several common properties, they differ in many ways.

    Acetal Homopolymer

    This material exhibits excellent thermal properties across a broad temperature range from -40°C to 120°C. It exhibits high impact strength at low and room temperatures. It possesses nearly 10%-15% high tensile strength than copolymers. Better wear resistance, and good shock resistance are a few other properties that make it popular.

    Acetal Copolymer

    It has a low moisture absorption property, which makes it suitable for wet environments. It has a slightly lower level of crystallinity than homopolymer, and this helps improve its dimensional stability over homopolymers. It exhibits better chemical resistance on exposure to high pH solutions than homopolymer. This material possesses excellent shock resistance and compressive strength.

    Grades of Acetal We Work With

    We regularly work with different copolymer and homopolymer grades of acetal. Both these grades have specific properties, which make them ideal for certain applications. In addition to these, we also work with a few other grades.

    Delrin Homopolymer

    Delrin® resin or Delrin POM-H is the most popular acetal homopolymer developed by DuPont. Lubrication and wear resistance are two factors that make this grade ideal for applications that are often subjected to challenges. Delrin homopolymer is NSF, FDA, and USDA compliant. We generally use it for machining fittings, bushings, impellers, and several mechanical components.

    Acetal Copolymer

    We regularly work with acetal copolymer as a part of our acetal plastic fabrication services. It is generally considered for parts that are exposed to wear and tear, and high moisture. Tecaform® is the most popular acetal copolymer we work with.

    ESD Acetal

    This grade of acetal is well-known for its anti-static and wear-resistant as well as mechanical and chemical properties. This grade is commonly used for building parts that protect delicate electronics, business machines, and so on.

    Glass Filed and Reinforced Acetals

    In glass filed acetals, glass fillers add stiffness to acetal. Unlike glass-reinforced versions, they do not add strength. We regularly machine this grade for general purpose applications. In Reinforced acetals, glass fibers add strength and stiffness to the parts. These grades are often chosen for applications that demand high strength and stiffness.

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