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High Quality Delrin for Aerospace Parts

Delrin, an acetal homopolymer, is widely recognized for its mechanical strength, tight dimensional control, low friction, and fatigue resistance. It machines effectively under controlled cooling methods, giving tight tolerance parts and excellent finishing.

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What it is

AeroCNCParts’s Delrin Machining and Engineering Expertise

AeroCNCParts delivers reliable Delrin components with ±0.005 mm tolerances, supported by certified aerospace processes. Using advanced 5-axis machining and detailed inspection procedures, we ensure repeatable, flight-quality results.

  • AS9100D and ISO 9001 certified production
  • Full FAI documentation provided
  • CMM and microscopic verification reports
  • NADCAP-approved material and finishing operations
At a Glance

Delrin Key Properties

Density

1.41 g/cm³

Tensile Strength

65–75 Mpa

Yield Strength

60–70 Mpa

Hardness

Rockwell M80–M90

Elastic Modulus

2.8–3.2 Gpa

Machinability

Excellent

Wear Resistance

High

Corrosion Resistance

Excellent

Finishes

Common Surface Treatments for Delrin

Vapor Polishing

Creates a clear, glossy finish.

  • Produces smooth, glossy finishes for optical or cosmetic aerospace parts.

Passivation

Cleans surface; boosts corrosion resistance.

  • Cleans surface contaminants before bonding, coating, or assembly.

Hard Anodizing

Hard, protective layer; cosmetic colors.

  • Cleans surface contaminants before bonding, coating, or assembly.
Advantages

Advantages of Delrin

  • Outstanding Dimensional Control

    Maintains precision under varying thermal conditions or loads.

  • Superior Fatigue Strength

    Performs reliably in moving, high-cycle mechanisms.

  • Low-Friction Behavior

    Supports gear and actuator performance with minimal lubrication.

  • Excellent Quality

    Resists moisture, fuels, and solvents during flight conditions.

Comparison

Delrin 150 VS 511 & 570

High-level comparison of common aerospace Delrin. Always align to your project spec.

Grade Strength Dimensional stability Corrosion resistance Machinability Note
Delrin 150 (General Purpose) High Excellent Excellent Excellent Standard grade for gears, bushings, and fasteners.
Delrin 511 Very High High Excellent Good Designed for a longer lifespan under friction and cyclic loads
Delrin 570 (Glass-Filled) Very High Very High Very Good Moderate Reinforced for rigidity and thermal endurance in load-bearing parts.
FAQ

FAQs about Delrin Machining

Why is Delrin preferred in aerospace manufacturing?
Its balance of rigidity, light weight, and machinability allows consistent ±0.005 mm accuracy for complex flight components.
Can Delrin integrate with metal inserts?
Yes. AeroCNCParts machines tight fits for threaded or anodized inserts while maintaining structural balance.
Is Delrin compatible with hydraulic and fuel systems?
Absolutely. It resists fuels, lubricants, and moisture, ensuring long-term performance in demanding environments.
Which Delrin grades offer the best high-friction performance?
Delrin 511 and 570 provide exceptional endurance for bearing, sliding, and wear-intensive uses.
How soon can AeroCNCParts deliver custom Delrin parts?
Typical production time is 4–7 business days, depending on the geometry and quality verification requirements.
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