## Common ground
Both options refer to structural steel 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 limited to iron or non-alloy steel (carbon steel without significant alloying elements).
- **Typical examples:** Standard I-beams, H-sections, channels made from plain carbon steel.
- **Best fit when:** The product is made of unalloyed steel (e.g., S235, S355) and not stainless or high-strength alloy steel.
**7222.40 – Angles, shapes and sections**
- **Defining trait:** Broader category covering all types of steel shapes, including alloy, stainless, and specialty steels.
- **Typical examples:** H-sections made from stainless steel, weathering steel, or high-strength low-alloy (HSLA) steel.
- **Best fit when:** The product is not plain carbon steel—e.g., it has added chromium, nickel, or other alloying elements.
## Key differences
| Feature | 7216 – Iron/non-alloy steel | 7222.40 – General shapes & sections |
|--------------------------|-----------------------------------|---------------------------------------------|
| Material type | Only non-alloy (carbon) steel | All steel types, including alloys |
| Alloy content | Low or none | May include significant alloying elements |
| Scope | Narrower | Broader |
## How to choose
- Is the material plain carbon steel (no added chromium, nickel, etc.)? → 7216
- Does it contain alloying elements like chromium or nickel? → 7222.40
## Overlaps & pitfalls
A product may fit both if it is a standard H-section made from non-alloy steel—this would fall under both codes. However, **7216 takes priority** when the material is non-alloy steel, as it is more specific. If unsure, use the material composition to decide: prioritize 7216 for plain carbon steel, 7222.40 for any alloyed or specialty steel