## Common ground
All options refer to metal cans designed to be sealed using soldering or crimping.
## Options at a glance
**7310.2X – Made of iron or steel**
- **Defining trait:** Constructed from iron or steel, typically with a tin coating for corrosion resistance.
- **Typical examples:** Tin cans for food, paint cans, industrial containers.
- **Best fit when:** The can is rigid, heavy, and commonly used for long-term storage of food or chemicals.
**7612.90 – Made of aluminium**
- **Defining trait:** Made from lightweight aluminium, often used for easy-open ends and recyclable packaging.
- **Typical examples:** Beverage cans, aerosol cans, foil-lined food containers.
- **Best fit when:** The can is lightweight, requires high corrosion resistance, and is intended for single-use or recycling.
## Key differences
| Feature | 7310.2X (Iron/Steel) | 7612.90 (Aluminium) |
|------------------|------------------------|-----------------------|
| Material density | High | Low |
| Common use | Durable storage | Beverage, aerosol |
| Sealing method | Soldering/crimping | Soldering/crimping |
## How to choose
- Is the can made of heavy, rigid metal like tinplate? → 7310.2X
- Is the can lightweight and commonly used for drinks or aerosols? → 7612.90
## Overlaps & pitfalls
A can may use soldering or crimping regardless of material, so both options are possible if the sealing method is the same. The key differentiator is material: steel/iron vs. aluminium. If unsure, prioritize based on physical properties—weight and appearance. No option takes priority unless context specifies (e.g., food vs. beverage use)