Engineering Plastic · Engineering Thermoplastic
PA66
PA66 is an engineering polymer — harder wear-resistant nylon. Typical values: 85 MPa yield, 1.14 g/cm³, rated to 100 °C. Available for CNC machining, Sheet metal, Injection molding at FabDigit.
Properties
Typical room-temperature values in the Unfilled condition. Metric first, imperial in gray. The bars show where PA66 sits against the other 74 polymer grades in the catalog.
Datasheet
| Yield strength | 85 MPa12 ksi |
|---|---|
| Tensile strength | 95 MPa14 ksi |
| Hardness | 115 HRR |
| Density | 1.14 g/cm³0.041 lb/in³ |
| Specific strength (yield ÷ density) | 75 |
| Min service temp | -30 °C-22 °F |
| Max service temp | 100 °C212 °F |
| Electrical conductivity | < 0.001 % IACSinsulator |
| Machinability | Very good80 / 100 |
| Weldability | Good65 / 100 |
| Formability | Fair40 / 100 |
| ISO 513 machining group | N |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other polymer grades
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. PA66 is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to PA66. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Better80 / 100 |
|---|---|
| ISO material group | N.8 |
| Cutting speed (rough / finish) | 360 / 440 m/min |
| Minimum wall | 0.5 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 8× diameter |
| Best surface (machined / polished) | Ra 0.8 / 0.4 µm |
| Hardenable after machining | No |
Sheet metal
| Formability | Fair40 / 100 |
|---|---|
| Weldability | Better65 / 100 |
Injection molding
| Mold shrinkage | 1.5 – 2.2 % |
|---|---|
| Wall thickness | 1 – 3.5 mm |
| Recommended draft | 1.5 ° |
| Pre-drying | 80 °C for 4 h |
| UV resistance | Fair |
Conditions and tempers
How PA66 is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
UnfilledDefault Grade Modifier | Tougher and cheaper than filled — snap fits, housings, wear parts | — | 82 | 60 | R121 |
GF15 15% Glass Fiber (GF15) | Light stiffening — covers and brackets under modest load | — | 125 | 5 | — |
GF30 30% Glass Fiber (GF30) | The structural default — mounts, housings, gears under sustained load | — | 190 | 3 | — |
CF20 20% Carbon Fiber (CF20) | High stiffness-to-weight — drone and robotics arms | — | 220 | 3 | — |
GF50 50% Glass Fiber (GF50) | Near-metal stiffness — pump housings, pressure parts; brittle | — | 230 | 2.5 | — |
CF30 30% Carbon Fiber (CF30) | Stiffest, lightest option; bleeds static — precision fixtures | — | 250 | 2 | — |
FR V-0 UL94 V-0 Flame Rated | Self-extinguishing — required in most electronics enclosures | — | 75 | 15 | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on PA66, ranked by how often they make sense for this grade.
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| Heat-Stake Insert | Assembly |
| Ultrasonic Insert | Assembly |
| Laser Engrave | Marking |
| Press-fit Insert | Assembly |
| Silk Screen | Marking |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for PA66
Coatings and treatments compatible with polymer on the processes PA66 runs on. Pick them in the quote configurator or call them out on the drawing.
Injection Molding Coating
- EMI Shielding Coating
- Soft Touch Coating
- Spray Painting
- UV Coating
Organic Coating
- Painting
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Hot Stamping
- In-Mold Labeling (IML)
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Pad Printing
- Vibro Engraving / Scribing
Metallization / Functional
- Chrome Plating (Plastic)
Equivalent designations
Standards and trade names that resolve to PA66 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- StanylUltramid AVydyneZytelAkulonUltramid
- Other
- Ertalon 66Nylon 6/6Tecamid 66Polyamide 66Nylon 6/6 30% Glass FilledNylon 66 (PA66)PA 6.6 + 30% glass fiberPA66 GF30PA66-GF30PA66+30GFZytel 70G33Nylon 66
Stock forms
Raw-material forms FabDigit sources PA66 in.
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.