What Distinguishes PVDF Material's Strength From Their Stiffness?

Stiffness, strength, hardness, and toughness are some of the main mechanical characteristics of plastic. Although these concepts may all seem identical, each one of them has value in and of itself. Trust Reading Plastic & Metal to explain the distinction between plastic strength and stiffness so you can select the appropriate material for your project. They have decades of expertise.

Difference Between Strength and Stiffness

Flexural modulus, or a material's capacity to bend, is a property that describes the stiffness of plastics and is expressed in pounds per square inch (psi). The stronger the material, the greater the flexural modulus; the more flexible, the lower the flexural modulus. In addition to flexural modulus, flexural strength or tensile modulus are other terms used to describe the stiffness of polymers. Choose high-quality PVDF Material online only at Petron Thermoplast.

This word conflation may make it difficult to distinguish between stiffness and strength. The amount of stress a plastic can bear when it is stretched or pushed without breaking is known as the material's tensile strength or ultimate strength. The capacity of a material to disperse a load and fend off deformation or deflection functional failure is referred to as stiffness.

Plastic Options to Choose From

Plastics with High Tensile Strength

• Nylon: Nylon, which has a tensile strength of 12,400 psi, is used for a variety of things, including clothes, rope, rubber reinforcement for things like automobile tires, and as a low-strength metal alternative. Nylon has a reasonably high melting point (450oF), great abrasion resistance, high strength, and outstanding tensile qualities. It is highly resistant to chemicals and is not harmed by alcohols, solvents, or oils.

• PAI (Torlon®): Polyamide-imide (PAI), which has a remarkable tensile strength of 21,000 psi, is the ultimate high tensile strength plastic. This high-performance plastic is naturally low-flammable, smoke-emitting, has strong wear and radiation resistance, and has high thermal stability. Jet engines, internal combustion engines, thrust washers, and printed circuit boards all use PAI components because they have the highest strength of any unreinforced polymer.

Plastics with Superior Stiffness

• Acetal – This rigid technical plastic can retain intricate, precise tolerances and is low-friction. With a flexural modulus of 14,300 psi, homopolymer acetal (Delrin®) is exceptionally stiff and has high wear, abrasion, and chemical resistance qualities.

• PPS – PPS is well recognized for having the broadest chemical resistance of any sophisticated engineering plastic. However, it also has a strong 21,000 psi flexural modulus. PPS offers good hydrolysis resistance, strong dielectric strength, superior electrical characteristics, and a very low coefficient of linear thermal expansion. It also retains its stiffness across a broad temperature range.

Plastics with Strength & Stiffness

• PEEK – PEEK is a powerhouse all-around, with a continuous service temperature of 500oF, high stiffness (24,000 pressure), strength (14,000 psi), and exceptional chemical resistance. PEEK also exhibits exceptional fatigue and stress-crack resistance, high creep resistance, and extremely little moisture absorption.

• Ultem® – PEI resins, like Ultem®, have excellent enhanced temperature resistance, wide chemical resistance, and high stiffness and strength. Ultem® provides consistent rigidity and strength up to 200oC/392oF and has a flexural modulus of 22,000 psi. Additionally, it exhibits high stress and cracks resistance when exposed to acids, alcohols, and other chemicals and is naturally flame resistant in most grades.

The most cutting-edge polymers are PVDF Material on the market, including those with exceptional rigidity and high tensile strength, which may be machined to perfection at Reading Plastic & Metal. We can mill and construct your components to retain precise tolerances in addition to assisting you in choosing the right material.