Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF Ultramid B3U Q721 PA6 Flame Retardant

BASF Ultramid B3U Q721 is a halogen-free flame-retardant polyamide 6 (PA6) grade offering UL94 V-0 rating at 0.75 mm, excellent flow for thin-wall parts, high mechanical strength, and good processability—ideal for electrical connectors and automotive components requiring safety and reliability.
  • basf ultramid b3u q721 pa6 flame retardant_87eff024
  • basf ultramid b3u q721 pa6 flame retardant_87eff024

Features Of BASF Ultramid B3U Q721 PA6 Flame Retardant

  1. Halogen-free flame retardancy meeting UL 94 V-0 at 1.6 mm thickness.

  2. Excellent mechanical strength and stiffness retention after humid conditioning.

  3. Good processability with stable melt flow for injection molding of thin-walled parts.

  4. Low smoke density and reduced toxic gas emission during combustion (compliant with EN 45545-2 for rail applications).

  5. Consistent color stability and surface quality in high-volume production runs.

Typical Applications Of BASF Ultramid B3U Q721 PA6 Flame Retardant

  1. Electrical connectors and housings for industrial automation systems.

  2. Busbar supports and insulating components in low-voltage switchgear.

  3. Interior components for railway rolling stock (e.g., ceiling panels, ducts, trim).

  4. Enclosures for LED lighting fixtures requiring fire-safe materials.

  5. Power tool housings and battery compartment covers in portable electronics.

Specifications Of BASF Ultramid B3U Q721 PA6 Flame Retardant

Chemical TypePolyamide 6 (PA6) with halogen-free flame retardant system
Product FormNatural-colored granules
AppearanceFree-flowing, cylindrical pellets, uniform size and color
UL 94 Rating (1.6 mm)V-0
EN 45545-2 ComplianceR22/R23 (HL3 level for interior use)
Melt Volume Rate (MVR, 275 °C/5 kg)28 cm³/10 min
Density (ISO 1183)1.28 g/cm³
Moisture Content (as supplied)≤ 0.25 wt%


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