## Common ground
Both options refer to metal sections made from iron or non-alloy steel, used in construction and engineering.
## Options at a glance
**7216 – Angles, shapes and sections of iron or non-alloy steel**
- **Defining trait:** Specifically covers products made from *iron or non-alloy steel*, excluding alloyed or stainless types.
- **Typical examples:** Standard I-beams, angle irons, flat bars (carbon steel).
- **Best fit when:** The material is plain carbon steel or iron, not stainless or alloyed.
**7222.40 – Angles, shapes and sections**
- **Defining trait:** Broader category that includes *all* types of angles, shapes, and sections, regardless of material (e.g., stainless, alloy, or non-alloy steel).
- **Typical examples:** Stainless steel channels, aluminum profiles, alloy steel beams.
- **Best fit when:** The product is made from any metal type, including alloys or stainless steel.
## Key differences
| Feature | 7216 | 7222.40 |
|--------|------|--------|
| Material scope | Only iron/non-alloy steel | All metals (including alloy/stainless) |
| Specificity | High (material-defined) | Low (general category) |
| Use case | Carbon steel structural parts | Any metal section, regardless of composition |
## How to choose
- Is the product made of *iron or non-alloy steel* only? → 7216
- Does it contain *stainless steel, alloy steel, or other metals*? → 7222.40
## Overlaps & pitfalls
A product made of non-alloy steel (e.g., carbon steel) fits **both** options. However, **7216 takes priority** when the material is specifically iron or non-alloy steel, as it’s more precise. If unsure, use 7216 for plain steel; use 7222.40 only if alloyed or non-steel materials are involved. Do not assume material type without confirmation