---
title: "20MB5 — 2 equivalent grades, compared"
description: "The designation 20MB5 is carried by 2 different grades. Compare them on the elements that actually differ, then open the one your print means."
canonical: https://steelequivalents.com/materials/afnor/20mb5
language: en
robots: index, follow
og_type: website
type: material-detail
language_alternates:
  en: https://steelequivalents.com/materials/afnor/20mb5.md
  cs: https://steelequivalents.com/cs/materiály/afnor/20mb5.md
  de: https://steelequivalents.com/de/werkstoffe/afnor/20mb5.md
  es: https://steelequivalents.com/es/materiales/afnor/20mb5.md
  fr: https://steelequivalents.com/fr/matériaux/afnor/20mb5.md
  hu: https://steelequivalents.com/hu/anyagok/afnor/20mb5.md
  it: https://steelequivalents.com/it/materiali/afnor/20mb5.md
  nl: https://steelequivalents.com/nl/materialen/afnor/20mb5.md
  pl: https://steelequivalents.com/pl/materiały/afnor/20mb5.md
  pt: https://steelequivalents.com/pt/materiais/afnor/20mb5.md
  ru: https://steelequivalents.com/ru/материалы/afnor/20mb5.md
  tr: https://steelequivalents.com/tr/malzemeler/afnor/20mb5.md
  zh: https://steelequivalents.com/zh/材料/afnor/20mb5.md
  ja: https://steelequivalents.com/ja/材料/afnor/20mb5.md
  ar: https://steelequivalents.com/ar/المواد/afnor/20mb5.md
  ko: https://steelequivalents.com/ko/재료/afnor/20mb5.md
  pt-br: https://steelequivalents.com/pt-br/materiais/afnor/20mb5.md
  hi: https://steelequivalents.com/hi/सामग्री/afnor/20mb5.md
content_hash: sha256:2790f7aefc9c6a99b2790f432bf52c95eda178f000cbf72567eea86cd88a6352
generated: 2026-09-21
---

> **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/afnor/20mb5
> Canonical URL: https://steelequivalents.com/materials/afnor/20mb5
> 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.

AFNOR · France · 2 grades

# 20MB5

The designation 20MB5 is carried by 2 different grades. Compare them on the elements that actually differ, then open the one your print means.

- *Matching grades* **2**
- [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades")
- [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades")

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

## Which of the 2 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 | C% | P% | Mn% |
|---|---|---|---|---|---|---|
| [19MnB4](/materials/din-en/19mnb4 "19MnB4") | [1.5523](/materials/material-no/1.5523 "1.5523") 1.5 | [Others](/categories/others "Others") | 6 | 0,17-0,24 | 0,03 | 0,80-1,15 |
| [19MnB4](/materials/din-en/19mnb4 "19MnB4") | [1.5530](/materials/material-no/1.5530 "1.5530") 1.5 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 5 | 0,17-0,23 | 0,025 | 1,10-1,40 |

## 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")
