Titanium is not iron since it is not derived from iron. Ferrous metals contain iron. Titanium is a periodic element.

Polypropylene, a versatile and popular polymer, is generally considered to be hard rather than soft, characterized by its rigidity and resistance to many chemical solvents, bases, and acids. However, its flexibility can be enhanced through various manufacturing processes such as copolymerization, where polypropylene is blended with other polymers to increase its flexibility and impact resistance. This can produce a softer material compared to the homopolymer version. The softness of polypropylene products can also be increased through the addition of plasticizers, although this is less common. Its inherent properties make it ideal for a wide range of applications including packaging, textiles (like non-woven fabrics which can feel soft), automotive components, and consumer goods. Despite these methods to alter its softness, pure polypropylene is generally not considered soft in the conventional sense when compared to materials like polyethylene or certain rubbers.

You'll often find polypropylene (PP) being used as a thermoplastic polymer thanks to its long-lasting, durable and versatile nature. The thing is, since it's a non-polar hydrocarbon polymer, its electrical conductivity isn't the greatest. This is because the molecular structure lacks free electrons, making it an ideal insulator for tasks that require good insulation like packaging and electrical components.

However, by adding conductive fillers like carbon black, graphene or metal particles, polypropylene can be transformed into conductive composites perfect for specific electronic applications. As a result, the use of polypropylene in the electronics industry has expanded immensely, with examples such as antistatic packaging and conductive components in electronic devices.