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X-Pro® PP 4212 is a general-purpose, medium-flow polypropylene copolymer suitable for both injection molding and extrusion applications. It serves as a low-cost alternative to our other resin grades, providing comparable quality and processability.

Produced from: Recycled post-industrial polypropylene

Color: Black


  • industrial
  • wire and cable
  • construction

Processing Methods: Injection Molding

  • Melt Flow 10-17 g/10 min
  • Izod Impact 1.5 ft lb/in
  • Tensile@ yield 2000 psi
  • Flexural Modulus 0.05 in/ min 100,000 PSI

Polymer NamePolypropylene Copolymer

Labeling ClaimsContains PCR Resin, Contains PIR Resin, Recycled

Processing MethodsInjection Molding

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Typical Properties
ValueUnitsTest Method / Conditions
Izod Impact Notched (at 23 °C)1.5Ft lbs/inASTM 256 / ISO 180/A
Melt Flow2023-10-17g/10 minASTM D1238 / ISO 1133
Tensile Strength (at yield)2000.0psiASTM D638 / ISO 527-1/2
Flexural Modulus (0.05 in/min)100000.0psiASTM D790 / ISO178

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Technical Details & Test Data

General Injection Molding Guide
Barrel Temperature Rear 360° F to 420°F Middle-380° F to 440°F

Front-400° F to 420°F

Nozzle Temperature 400°F – 420°F
Melt Temperature 400°F – 440°F
Mold Temperature 80°F – 140°F
Molding Pressure Boost-500 to 1,500 psi Hold-50 to 75% of Boost

Back-50 to 150 psi

Screw Speed Medium to Fast
Clamp Force

2 to 2.5 tons per square inch part projected area


2 to 4 hours @ 180°F