---
title: "St 52-3 U — 3 equivalent grades, compared"
description: "The designation St 52-3 U is carried by 3 different grades. Compare them on the elements that actually differ, then open the one your print means."
canonical: https://steelequivalents.com/materials/din-en/st-52-3-u
language: en
robots: index, follow
og_type: website
type: material-detail
language_alternates:
  en: https://steelequivalents.com/materials/din-en/st-52-3-u.md
  cs: https://steelequivalents.com/cs/materiály/din-en/st-52-3-u.md
  de: https://steelequivalents.com/de/werkstoffe/din-en/st-52-3-u.md
  es: https://steelequivalents.com/es/materiales/din-en/st-52-3-u.md
  fr: https://steelequivalents.com/fr/matériaux/din-en/st-52-3-u.md
  hu: https://steelequivalents.com/hu/anyagok/din-en/st-52-3-u.md
  it: https://steelequivalents.com/it/materiali/din-en/st-52-3-u.md
  nl: https://steelequivalents.com/nl/materialen/din-en/st-52-3-u.md
  pl: https://steelequivalents.com/pl/materiały/din-en/st-52-3-u.md
  pt: https://steelequivalents.com/pt/materiais/din-en/st-52-3-u.md
  ru: https://steelequivalents.com/ru/материалы/din-en/st-52-3-u.md
  tr: https://steelequivalents.com/tr/malzemeler/din-en/st-52-3-u.md
  zh: https://steelequivalents.com/zh/材料/din-en/st-52-3-u.md
  ja: https://steelequivalents.com/ja/材料/din-en/st-52-3-u.md
  ar: https://steelequivalents.com/ar/المواد/din-en/st-52-3-u.md
  ko: https://steelequivalents.com/ko/재료/din-en/st-52-3-u.md
  pt-br: https://steelequivalents.com/pt-br/materiais/din-en/st-52-3-u.md
  hi: https://steelequivalents.com/hi/सामग्री/din-en/st-52-3-u.md
content_hash: sha256:d74362c97b281cfd8acb2d7bfe0b2c35394d8120d7f835015727e16847cef940
generated: 2026-09-22
---

> **Machine-readable Markdown rendering.** This is a Markdown representation of a web page,
> served for AI agents and crawlers as a token-efficient alternative to the full HTML.
> Full interactive HTML version: https://steelequivalents.com/materials/din-en/st-52-3-u
> Canonical URL: https://steelequivalents.com/materials/din-en/st-52-3-u
> Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi
> Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything
> below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real
> content change; `generated` moves on every render and is not a change signal.

DIN / EN · Europe · 3 grades

# St 52-3 U

The designation St 52-3 U is carried by 3 different grades. Compare them on the elements that actually differ, then open the one your print means.

- *Matching grades* **3**
- [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades")
- [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades")

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")

## Which of the 3 do you want?

This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero.

| Grade | Material no. | Category | Designations | P% | S% | C% | N% |
|---|---|---|---|---|---|---|---|
| [K12037](/materials/uns/k12037 "K12037") | [1.0547](/materials/material-no/1.0547 "1.0547") 1.0 | [Others](/categories/others "Others") | 7 | 0,035 | 0,035 | ≤0,22 | 0,009 |
| [K12000](/materials/uns/k12000 "K12000") | [1.0553](/materials/material-no/1.0553 "1.0553") 1.0 | [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels") | 30 | 0,03 | 0,03 | ≤0,20 | 0,012 |
| [Gr.105-85](/materials/aisi-sae/gr-105-85 "Gr.105-85") | [1.0554](/materials/material-no/1.0554 "1.0554") 1.0 | [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels") | 14 | 0,04 | 0,04 | ≤0,20 | 0,009 |

## Not sure which one your print means?

Search the catalogue by designation, material number or composition — every name on this page is itself a way in.

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")