That's an excellent and very practical question! It really depends on the specific brand and the quality of the bin you purchase. For most standard plastic or basic metal bins you find at general retailers, a warranty specifically against rust or cracks is quite rare. They often come with a very limited warranty that might cover manufacturing defects for a short period, but not long-term wear and tear like rust.
However, when you invest in higher-end bins, especially those designed for commercial use or made from premium materials like 304 or 316-grade stainless steel, a robust warranty is common. Reputable manufacturers of commercial and heavy-duty bins frequently offer warranties ranging from 1 year to a lifetime against rust-through (perforation) and cracks under normal use. This warranty typically covers defects in materials and workmanship.
It's crucial to read the warranty details carefully. Often, it will specify that the warranty is valid for the original purchaser and requires proof of purchase. Also, note that "rust-resistant" is not the same as "rust-proof." Surface discoloration or minor surface rust from harsh chemicals might not be covered, whereas actual corrosion that compromises the bin's structure usually is.
My advice? Always check the product specifications or ask the supplier directly before buying. A strong warranty is a good indicator of a bin's durability and the manufacturer's confidence in their product. For long-term value, especially in a demanding environment like a commercial kitchen, opting for a bin with a solid warranty is a smart move.