## Common ground
All options are containers for storing and transporting petrol, made from metal.
## Options at a glance
**7310.2X – made of iron or steel**
- **Defining trait:** Constructed from iron or steel, typically heavier and more durable.
- **Typical examples:** Heavy-duty fuel cans used in industrial settings, military rations.
- **Best fit when:** Durability and resistance to impact are priorities; often used for bulk storage.
**7612.90 – made of aluminium**
- **Defining trait:** Made from aluminium, lighter in weight and resistant to corrosion.
- **Typical examples:** Portable fuel cans for camping, small engine use (e.g., chainsaws).
- **Best fit when:** Portability and resistance to rust are key; common in outdoor or mobile applications.
## Key differences
| Feature | Iron/Steel (7310.2X) | Aluminium (7612.90) |
|------------------|------------------------|------------------------|
| Weight | Heavy | Light |
| Corrosion resistance | Low (requires coating) | High |
| Durability | High | Moderate |
## How to choose
- Is the can primarily used for heavy-duty or industrial storage? → 7310.2X
- Is portability and resistance to rust more important? → 7612.90
## Overlaps & pitfalls
A petrol can could be both durable and lightweight if reinforced, but the material defines the primary classification. The main function (e.g., transport vs. storage) may influence choice, but material is the key differentiator here. No option is vague—both are clearly defined by base metal