Compare Polyurethanes to The Performance of Metals, Plastics and Conventional Rubber

Polyurethanes have many advantages over metals, plastics, and conventional rubbers:

vs. Metal vs. Plastics vs. Rubber
Lightweight High Impact Resistance High Abrasion Resistance
Noise Reduction Elastic Memory High Cut & Tear Resistance
Abrasion Resistance Abrasion Resistance Superior Load Bearing Capacity
Corrosion Resistance Noise Reduction Thick Section Molding Without a Cure Gradient
Resilience Variable Coefficient of Friction Colorability
Impact Resistance Resilience Oil Resistance
Flexibility Thick Section Molding Ozone Resistance
Easily Moldable Lower Cost Tooling Radiation Resistance
Non-Conductive Lower Temperature Resistance Broader Hardness Range
Non-Sparking Resistance to Cold Flow (or Compression Set) Castable Nature
Often Lower Cost Radiation Resistance Lower Cost, Low Pressure Tooling

Urethane vs. Rubber: A Closer Look

In Tension

Seldom do we use urethane elastomers in tension and then only to a small fraction of their ultimate strength. Tensile stress strain curves for several compounds are shown merely as information in the following graphs:

Polyurethane Comparison Chart
polyurethane comparison-chart