Delrin
At a Glance
Process
Lead Time
Colors
Tolerance
Price
Applications
About the Material
Delrin (generic: acetal) is a low-friction, high-stiffness material. It is used in applications ranging from auto parts to musical instruments. With a relatively high toughness and minimal elongation, Delrin boasts excellent dimensional accuracy.
Fictiv also offers Delrin AF (13% PTFE-Filled) and Glass-Filled Delrin.
When compared with standard Delrin, Delrin AF has an increased coefficient of friction for applications that require lubrication. With an excellent wear resistance, toughness, strength and dimensional stability, this material is often found in load bearing applications such as bushings, bearings, cams, thrust washers, gaskets and valve seats.
Glass-filled Delrin offers superior stiffness and dimensional stability with a high resistance to creep. Glass fibers increase impact resistance and fatigue endurance. This material is commonly used for automotive applications, construction, fixturing, and gear manufacturing.
Material Properties
Delrin 150
Tensile Strength
Elongation at Break
Hardness
Density
Maximum
Temperature
McMaster Part Number
Delrin AF (13% PTFE Filled)
Tensile Strength
Elongation at Break
Hardness
Density
Maximum
Temperature
McMaster Part Number
Delrin (30% Glass Filled)
Tensile Strength
Elongation at Break
Hardness
Density
Maximum
Temperature
McMaster Part Number
Material Finish
Delrin-150 and Glass-Filled Delrin materials are naturally opaque white because of its crystalline structure and has a matte finish. Delrin AF comes in a brown color (pictured on the right).
Design Recommendations
Min Wall Thickness
Min End Mill Size
Min Drill Size
Max Part Size
Undercuts
Radii : Depth
(0.03 in)
(0.02 in)
152 x 394 mm
[d,h] (lathe)
For end mills, depth must not exceed 10x tool diameter.
Warping
Due to the composition of Delrin and temperatures from machining, it is highly susceptible to warping on large, flat parts or where there are thin walls. We recommend avoiding thin walls; if you need thin walls, use fasteners to clamp down your design.
Cost Saving Tip
Related Resources
Engineer's Guide to CNC Machining for Prototyping Hardware
Fictiv CNC Material Datasheet