PP-H (Polypropylene Homopolymer) vs PE-UHMW: Both polyolefins — PP is stiffer, PE-UHMW is tougher
PP-H (Polypropylene Homopolymer) vs PE-UHMW
Side-by-side chemical composition and mechanical property comparison.
Overview
PP-H (Polypropylene Homopolymer)
Polypropylene Homopolymer — the lightest common engineering plastic (0.905 g/cm³). Excellent chemical resistance (esp. to acids and bases), good fatigue resistance (integral living hinges), and low moisture absorption. Becomes brittle below 0°C. Used for chemical tanks, HVAC ducts, pump housings, food containers, automotive battery cases, and medical lab equipment.
PE-UHMW
Ultra-High Molecular Weight Polyethylene — the highest impact-strength thermoplastic. Molecular weight 2-6 million g/mol. Self-lubricating, extremely wear-resistant (15x better than carbon steel), and chemically inert. Used for hip/knee implant bearings, conveyor guides, dock fenders, chute liners, food processing equipment, and ballistic armor (Dyneema/Spectra fiber form).
| PP-H (Polypropylene Homopolymer) | PE-UHMW | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 10350 | ISO 11542 |
Mechanical properties
| Property | PP-H (Polypropylene Homopolymer) | PE-UHMW | Unit |
|---|---|---|---|
| tensile_strength | 30–36 | 39–48 | MPa |
| yield_strength | 30–36 | 19–23 | MPa |
| elongation | 70–200 | 250–450 | % |
Compatibility Assessment
PP-H is stiffer (E-Mod 1.5 vs 0.6 GPa) and has higher Tm (163 vs 130°C). PE-UHMW has vastly superior impact and wear resistance. PP becomes brittle below 0°C; PE-UHMW stays tough to -200°C. Choose PP for chemical tanks/general; PE-UHMW for wear parts and impact.
Frequently Asked Questions
Is PP-H (Polypropylene Homopolymer) the same as PE-UHMW?
PP-H (Polypropylene Homopolymer) and PE-UHMW have a 35% composition overlap. Both polyolefins — PP is stiffer, PE-UHMW is tougher
Can I replace PP-H (Polypropylene Homopolymer) with PE-UHMW?
Generally not recommended. The compositions differ significantly (35% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between PP-H (Polypropylene Homopolymer) and PE-UHMW?
The main differences are in the following elements: overall alloying content. PP-H (Polypropylene Homopolymer) is a Polymers grade, while PE-UHMW is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.