Mechanical strength: HPP for demanding environments

Mechanical Strength of HPP: An Alternative to Metals

In industrial environments subject to intense mechanical stress, vibration or thermal cycling, material resistance is key. High-performance polymers (HPPs) offer a unique combination of lightness, rigidity and fatigue resistance, outperforming standard plastics while rivalling certain metals.

Why choose HPP for mechanical loads?

  • Excellent tensile and bending strength
  • High fatigue and wear resistance
  • Dimensional stability under prolonged stress
  • Low density: optimized strength-to-weight ratio
  • High-temperature creep resistance
     

High-strength HPP polymers - Sélection DEMGY

Product

 

Drive >

 

Module >

 

Continuous temp.

 

Key benefits

 

KT-820 CF30 (PEEK)

 

170 MPa

 

13 GPa

 

260°C

 

Extreme strength, controlled creep

 

Torlon® 4203 (PAI)

 

180 MPa

 

12 GPa

 

260°C

 

Rigidity, insulation, low wear

 

Vespel® SCP-5000 (PI)

 

240 MPa

 

13 GPa

 

320°C

 

Cryogenic + thermal resistance

 

Ryton® R4 (PPS GF40)

 

150 MPa

 

10 GPa

 

220°C

 

Rigidity + aggressive chemistry

 

Kynar® 1000 HD (PVDF)

 

50 MPa

 

2 GPa

 

140°C

 

Good chemical/mechanical resistance

 
List of the main high-strength HPP polymers selected by DEMGY
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HPP vs Metals vs Standard Plastics

Criteria

 

Standard plastics

 

Metals

 

HPP

 

Mechanical resistance

 

Medium

 

High

 

High ✅

 

Wear resistance

 

Low

 

Good

 

Excellent ✅

 

Creep resistance

 

Poor

 

Good

 

Very good ✅

 

Density / weight

 

Low

 

High

 

Low ✅

 

Transformation

 

Easy

 

Difficult

 

Optimized ✅

 
Comparative table of HPP vs Metals vs Standard Plastics
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Applications where mechanical strength is critical

Aerospace

  • Structural parts, bushings, lightweight fasteners
  • Vespel®: mechanical strength up to 550°C

Automotive & electric mobility

  • Bearings, guides, connectors under stress
  • KT-820 CF30: lightweight, rigid, durable

Chemistry & pharma

  • Pumps, seals, turbines in corrosive fluids
  • Ryton® R4: pressure + chemical resistance

Electronics & electrical engineering

  • Component supports, rigid spacers
  • Torlon® 4203: wet/wet mechanical insulation
     

DEMGY: tailor-made solutions for mechanical performance

Advice and material analysis

  • Selection according to your loads, cycles and constraints
  • Mechanical simulation (FEM), dimensioning

Controlled processing

  • Complex high-precision machining
  • Injection molding, compression, additive manufacturing

Quality control

  • ISO, UL, REACH certified mechanical testing
  • Aerospace, automotive, pharmaceutical compliance

Mechanically resistant HPPs are an effective replacement for metals in technical parts. Thanks to their lightness, wear resistance and structural reliability, they offer real added value in demanding sectors.