Product Information
Sep 2020
Ultramid® B3WG6 GPX BK23238
Polyamide 6

Product Description
Ultramid B3WG6 GPX BK23238 is a 30% glass fiber reinforced, heat stabilized injection molding PA6 grade for primary use in welded air intake manifolds. This grade has been engineered to provide improved burst pressure strengths with excellent long-term burst strength retention.

Typical applications include automotive manifolds and other powertrain components.

PHYSICAL ISO Test Method Property Value
Density, g/cm³ 1183 1.35
MECHANICAL ISO Test Method Dry Conditioned
Tensile Modulus, MPa 527    
    23C 9,600 -
Tensile stress at break, MPa 527    
    23C 185 -
Tensile strain at break, % 527    
    23C 3.5 -
Flexural Strength, MPa 178    
    23C 265 -
Flexural Modulus, MPa 178    
    23C 8,300 -
IMPACT ISO Test Method Dry Conditioned
Charpy Notched, kJ/m2 179    
    23C 13 -
Charpy Unnotched, kJ/m2 179    
    23C 95 -
THERMAL ISO Test Method Dry Conditioned
Melting Point, C 3146 220 -
HDT A, C 75 202 -

Processing Guidelines
Material Handling
Max. Water content: 0.15%
Material is supplied in sealed containers and drying prior to molding in a dehumidifying or desiccant dryer is recommended. Drying parameters are dependent upon the actual percentage of moisture in the pellets and typical pre-drying conditions are 2-4 hours at 180F (83C). Recommended moisture levels for achieving optimum surface qualities and mechanical properties is 0.05% - 0.12%. Further information concerning safe handling procedures can be obtained from the Safety Data Sheet (MSDS), or by contacting your BASF representative.

Typical Profile
Melt Temperature 270-290C (518-554F)
Mold Temperature 80-90C (176-194F)
Injection and Packing Pressure 35-125 bar (500-1500 psi)

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 80-95C (176-203F) 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.

Back pressure can be utilized to provide uniform melt consistency and reduce trapped air and gas. Minimal back pressure should be utilized to prevent glass breakage.

Fill Rate
Fast fill rates are recommended to ensure uniform melt delivery to the cavity and prevent premature freezing. Surface appearance is directly affected by injection rate.

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: