Product Information
Jul 2020
Ultramid® A3L HP UV BK23220
Polyamide 66

Product Description
Ultramid A3L HP UV BK23220 is an unreinforced, impact modified, UV stabilized, high flow nylon 66 for injection molding. This grade has excellent flow and improved ambient and low temperature toughness.

Typical applications include cable ties, fasteners and clamps.

PHYSICAL ISO Test Method Property Value
Density, g/cm³ 1183 1.10
MECHANICAL ISO Test Method Dry Conditioned
Tensile Modulus, MPa 527    
    23C 2,430 -
Tensile stress at yield, MPa 527    
    23C 60.8 -
Tensile strain at yield, % 527    
    23C 7 -
Tensile strain at break, % 527    
    23C 28 -
Flexural Modulus, MPa 178    
    23C 2,230 -
IMPACT ISO Test Method Dry Conditioned
Izod Notched Impact, kJ/m2 180    
    -40C 9.1 -
    23C 18 -
Charpy Notched, kJ/m2 179    
    -30C 8.6 -
    23C 17 -
THERMAL ISO Test Method Dry Conditioned
Melting Point, C 3146 260 -
HDT A, C 75 70 -
HDT B, C 75 192 -
UL RATINGS UL Test Method Property Value
Flammability Rating, 0.75mm UL94 HB
Relative Temperature Index, 0.75mm UL746B  
    Mechanical w/o Impact, C 110
    Mechanical w/ Impact, C 105
    Electrical, C 140
Flammability Rating, 3.0mm UL94 HB
Relative Temperature Index, 3.0mm UL746B  
    Mechanical w/o Impact, C 110
    Mechanical w/ Impact, C 105
    Electrical, C 140

Processing Guidelines
Material Handling
Nylon 66 materials must be properly dried in order to provide parts with optimum strength and toughness. Nylon 66 materials are hygroscopic and will become degraded by excessive moisture during the injection molding prCess. For unopened bag/box, dry at 60C (140F) for 1-2 hours. For material exposed to the atmosphere, if additional drying is needed, dry at 66C (150F) or until the moisture level is between 0.04 - 0.20%.

Typical Profile
Melt Temperature: 288-305C (550-581F)
Mold Temperature: 60-100C (140-212F)
Injection Pressure: 35-125 MPa (5000-18000 psi)

Back Pressure: 0-0.35 MPa (0-50 psi)
Screw RPM 40-80
Screw Compression Ratio:3:1-4:1

Mold Temperatures
This product can be processed over a wide range of mold temperatures; however, for applications where aesthetics are critical, a mold surface temperature of 60-100C (140-212F) is recommended.

Injection pressure controls the filling of the part and should be applied for 90% of ram travel. Packing pressure affects the final part and can be used effectively in controlling sink marks and shrinkage. It should be applied and maintained until the gate area is completely frozen off.

Fill Rate
Fast fill rates are recommended to ensure uniform melt delivery to the cavity and prevent premature freezing.

Although all statements and information in this publication are believed to be accurate and reliable, they are presented gratis and for guidance only, and risks and liability for results obtained by use of the products or application of the suggestions described are assumed by the user. NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATA OR INFORMATION SET FORTH. Statements or suggestions concerning possible use of the products are made without representation or warranty that any such use is free of patent infringement and are not recommendations to infringe any patent. The user should not assume that toxicity data and safety measures are indicated or that other measures may not be required.

  BASF Corporation
Engineering Plastics
1609 Biddle Avenue
Wyandotte, MI 48192
General Information: 800-BC-RESIN
Technical Assistance: 800-527-TECH (734-324-5150)
Web address: