Product Information
Jul 2020
Ultramid® B3WG7
Polyamide 6

Product Description
Ultramid B3WG7 is a 35% glass fiber reinforced injection molding PA6 grade for highly rigid, dimensionally stable components which are resistant to high temperature aging and have improved retention of properties in a hot water environment.

Typical applications include automotive clutch and accelerator pedals.

PHYSICAL ISO Test Method Property Value
Density, g/cm³ 1183 1.41
Moisture, % 62  
    (50% RH) 2
    (Saturation) 6.2
RHEOLOGICAL ISO Test Method Dry Conditioned
Melt Volume Rate (275 C/5 Kg), cc/10min. 1133 45 -
MECHANICAL ISO Test Method Dry Conditioned
Tensile Modulus, MPa 527    
    23C 11,000 7,200
Tensile stress at break, MPa 527    
    23C 195 130
Tensile strain at break, % 527    
    -40C 3.8 -
    23C 3.5 7.0
Flexural Modulus, MPa 178    
    23C 10,000 -
IMPACT ISO Test Method Dry Conditioned
Charpy Notched, kJ/m2 179    
    -30C 13 -
    23C 18 33
Charpy Unnotched, kJ/m2 179    
   -30C 90 -
    23C 100 110
THERMAL ISO Test Method Dry Conditioned
Melting Point, C 3146 220 -
HDT A, C 75 215 -
HDT B, C 75 220 -
Coef. of Linear Thermal Expansion, Parallel, mm/mm C 0.18 X10-4 -
Coef. of Linear Thermal Expansion, Normal, mm/mm C 0.65 X10-4 -
ELECTRICAL ISO Test Method Dry Conditioned
Comparative Tracking Index IEC 60112 450 450
Volume Resistivity (Ohm-m) IEC 60093 1E13 1E10
Dielectric Constant (1 MHz) IEC 60250 3.9 6.2
Dissipation Factor (100 Hz), E-4 IEC 60250 210 1,900
Dissipation Factor (1 MHz), E-4 IEC 60250 210 1,900
UL RATINGS UL Test Method Property Value
Relative Temperature Index, 0.75mm UL746B  
    Electrical, C 130
Flammability Rating, 1.5mm UL94 HB
Relative Temperature Index, 1.5mm UL746B  
    Mechanical w/o Impact, C 130
    Mechanical w/ Impact, C 90
    Electrical, C 130
Flammability Rating, 3.0mm UL94 HB
Relative Temperature Index, 3.0mm UL746B  
    Mechanical w/o Impact, C 130
    Mechanical w/ Impact, C 100
    Electrical, C 130

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 270-295C (518-563F)
Mold Temperature 80-95C (176-203F)
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: