# HS code 7218.91: Stainless steel in ingots or other primary forms; semi-finished products of stainless steel, of rectangular (other than square) cross-section

> HS code 7218.91 covers stainless steel in ingots or other primary forms; semi-finished products of stainless steel, of rectangular (other than square) cross-section, other than those classified in 7218.99. It sits in heading 72.18 (stainless steel in ingots or other primary forms; semi-finished products of stainless steel) in chapter 72 (iron and steel). Other goods of heading 72.18 are classified under 7218.10 (ingots and other primary forms) and 7218.99 (other, other). National tariff lines under 7218.91 are live on border.bot for the United States (3 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/721891
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 72](https://border.bot/hs-codes/72) / [72.18](https://border.bot/hs-codes/7218) / [7218.91](https://border.bot/hs-codes/721891)

## Key facts

- HS code: 7218.91
- Covers: Stainless steel in ingots or other primary forms; semi-finished products of stainless steel, of rectangular (other than square) cross-section
- Heading: [72.18: Stainless steel in ingots or other primary forms; semi-finished products of stainless steel](https://border.bot/hs-codes/7218)
- Chapter: [72: Iron and steel](https://border.bot/hs-codes/72)
- Edition: HS2022
- Duty in the United States: [See its 3 lines](https://border.bot/countries/united-states/hs-codes/721891)

## What this code covers

HS code 7218.91 covers stainless steel in ingots or other primary forms; semi-finished products of stainless steel, of rectangular (other than square) cross-section, other than those classified in 7218.99.

The legal text of the subheading is “Other: Of rectangular (other than square) cross-section”, read under “Other”, in HS2022.

## What it doesn’t cover

Other goods of heading 72.18 are classified under 7218.10 (ingots and other primary forms) and 7218.99 (other, other).

- [7218.10](https://border.bot/hs-codes/721810) Ingots and other primary forms
- [7218.99](https://border.bot/hs-codes/721899) Other: Other

## How it is structured

7218.91 is a six-digit subheading. Its first two digits, 72, are the chapter; the first four, 7218, are heading 72.18; the last two, 91, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 72: Iron and steel
- Heading 72.18: Stainless steel in ingots or other primary forms; semi-finished products of stainless steel
- Within the heading: Other
- Subheading 7218.91: Of rectangular (other than square) cross-section

## In other countries

National tariff lines under 7218.91 are live on border.bot for the United States (3 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/721891): 3 lines, used by 1 other country

## Related codes

The same text, “Other: Of rectangular (other than square) cross-section”, also divides 1 other heading in chapter 72: 7214.91 under heading 72.14.

- [7214.91](https://border.bot/hs-codes/721491) Heading 72.14: Other bars and rods of iron or non-alloy steel, not further worked than forged, hot-rolled, hot-drawn or hot-extruded, but including those twisted after rolling

- Previous subheading: [7218.10](https://border.bot/hs-codes/721810) Ingots and other primary forms
- Next subheading: [7218.99](https://border.bot/hs-codes/721899) Other: Other

## Frequently asked questions

### What does HS code 7218.91 cover?

HS code 7218.91 covers stainless steel in ingots or other primary forms; semi-finished products of stainless steel, of rectangular (other than square) cross-section, other than those classified in 7218.99.

### Which heading and chapter is HS code 7218.91 in?

HS code 7218.91 is in heading 72.18 (stainless steel in ingots or other primary forms; semi-finished products of stainless steel) in chapter 72 (iron and steel).

### Where are goods of heading 72.18 classified when 7218.91 doesn’t fit?

Other goods of heading 72.18 are classified under 7218.10 (ingots and other primary forms) and 7218.99 (other, other).

### Which countries’ tariffs list national lines under HS code 7218.91?

National tariff lines under 7218.91 are live on border.bot for the United States (3 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://border.bot/hs-codes/721891.json