PRODUCT BULLETIN

Maxxam™ HST Polypropylene FormulationsEnhanced Polypropylene Materials For Automotive Lightweighting

The Maxxam™ HST line of filled polypropylene

(PP) materials provide 15–25 percent

greater strength at equivalent glass loading

of traditional glass-filled (GF) PP using

proprietary chemical coupling technology.

These materials offer exceptional levels of

stiffness and heat deflection performance

compared to GF PP. Maxxam materials are

designed for injection molded structural parts

with demanding mechanical and thermal

property requirements, and can serve as an

integral lightweighting solution.

Maxxam HST material enables multiple

lightweighting approaches:

• Replace heavier engineered GF resins,

such as nylon

• Redesign traditional GF PP parts

with thinner walls

KEY CHARACTERISTICS

• Chemically coupled

• Exceptional dimensional stability

• High flow grades

MARKETS AND APPLICATIONS

These high-performance PP formulations are

lighter weight solutions for automotive parts

typically manufactured with long glass fiber

PP. Highlights of Maxxam HST include:

• Provides lightweight solution in structural

applications

• Solves distortion and warpage issues

in instrumental panel carriers

• Resists deformation up to approximately

150°C in under-the-hood applications

• Allows for higher regrind usage while

maintaining property integrity

0

2000

4000

6000

8000

6500 6500 65006300

MP

a

Flexural Modulus (MPa)

MaxxamHST 5430

30% GFNylon 6/6*

*Conditioned at 50% relative humidity

30% LGF PP

30% GF PC/ABS

Stiffness comparison of Maxxam HST to 30% GF engineering polymers

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Copyright © 2019, PolyOne Corporation. PolyOne makes no representations, guarantees, or warranties of any kind with respect to the information contained in this document about its

accuracy, suitability for particular applications, or the results obtained or obtainable using the information. Some of the information arises from laboratory work with small-scale equipment

which may not provide a reliable indication of performance or properties obtained or obtainable on larger-scale equipment. Values reported as “typical” or stated without a range do not

state minimum or maximum properties; consult your sales representative for property ranges and min/max specifications. Processing conditions can cause material properties to shift

from the values stated in the information. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use

application. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from

your use of the information and/or use or handling of any product. POLYONE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information. This literature shall NOT operate as

permission, recommendation, or inducement to practice any patented invention without permission of the patent owner.

PROPERTY CONDITION UNITS TEST METHOD 5430 5435 5440 5450

Reinforcement % - % - 30 35 40 50

Specific Gravity 73°F (23°C) - ISO 1183 1.13 1.18 1.23 1.35

Tensile Strength Yield MPa ISO 527 102 105 113 130

Flexural Modulus 73°F (23°C) MPa ISO 178 6,500 8,000 9,400 11,500

Notched Charpy 73°F (23°C) kJ/m2 ISO 179 9.4 9.3 11.0 12.0

Heat Deflection 264 psi °C ISO 75 152 152 153 154

MAXXAM HST TECHNICAL PROPERTIES