How does the tensile strength of PVC compare to polypropylene for bench slats?

When selecting materials for bench slats, tensile strength is a critical factor. PVC (Polyvinyl Chloride) and polypropylene are two popular choices, but they differ significantly in performance.

PVC typically has a tensile strength ranging from 40 to 60 MPa, making it highly durable and resistant to deformation under stress. It is also weather-resistant, ideal for outdoor benches. Polypropylene, on the other hand, has a lower tensile strength of around 30-40 MPa but offers better flexibility and impact resistance.

For heavy-duty applications, PVC is often preferred due to its higher tensile strength and rigidity. However, polypropylene may be more suitable for environments requiring flexibility and shock absorption. Cost-wise, PVC is generally more affordable, but polypropylene provides better resistance to UV degradation over time.

In summary, PVC excels in tensile strength and rigidity, while polypropylene offers superior flexibility and long-term UV resistance. The choice depends on specific needs and environmental conditions.