Steel is not a polymer; it is an alloy primarily composed of iron and carbon, with occasional other elements to improve its physical properties. Polymers are large molecules made up of repeating units called monomers, which are typically organic in nature, such as plastics or natural rubber. The key difference between polymers and steel lies in their composition and molecular structure. Polymers have a chain-like structure of repeated units, while steel's structure is crystalline, formed by a metallic bonding of iron atoms with carbon inclusions and other alloying elements. Understanding this distinction is important for material science and engineering applications, where the characteristics of polymers and metals like steel are utilized differently based on their molecular architecture and resulting properties.

Titanium erosion is a term often used to describe the degradation of titanium caused by external influences. This material has a strong reputation for being highly resistant to various acids. alkalis. natural and industrial liquids. Yet. it is not impervious to harm. For instance. high levels of acidic substances. certain alkaline solutions. and exposure to fluorine gas can result in corrosion. The extent and intensity of this damage vary based on the type of substance. its concentration. temperature. and other related elements.

No, you typically do not have to freeze resin. Most types of resin used in crafts and DIY projects, such as epoxy or polyester resin, are best stored at room temperature, away from direct sunlight and in a dry place to ensure a long shelf life and optimal viscosity for use. Freezing resin can cause it to become too thick or entirely solidify, making it unusable or difficult to work with once thawed. However, if you are working with a specific type of resin or additive that requires cold storage to preserve its properties, follow the manufacturer’s instructions closely. Generally, proper storage without freezing is sufficient to maintain the quality of your resin.