---
title: "18HGM — 4 equivalent grades, compared"
description: "The designation 18HGM is carried by 4 different grades. Compare them on the elements that actually differ, then open the one your print means."
canonical: https://steelequivalents.com/materials/pn/18hgm
language: en
robots: index, follow
og_type: website
type: material-detail
language_alternates:
  en: https://steelequivalents.com/materials/pn/18hgm.md
  cs: https://steelequivalents.com/cs/materiály/pn/18hgm.md
  de: https://steelequivalents.com/de/werkstoffe/pn/18hgm.md
  es: https://steelequivalents.com/es/materiales/pn/18hgm.md
  fr: https://steelequivalents.com/fr/matériaux/pn/18hgm.md
  hu: https://steelequivalents.com/hu/anyagok/pn/18hgm.md
  it: https://steelequivalents.com/it/materiali/pn/18hgm.md
  nl: https://steelequivalents.com/nl/materialen/pn/18hgm.md
  pl: https://steelequivalents.com/pl/materiały/pn/18hgm.md
  pt: https://steelequivalents.com/pt/materiais/pn/18hgm.md
  ru: https://steelequivalents.com/ru/материалы/pn/18hgm.md
  tr: https://steelequivalents.com/tr/malzemeler/pn/18hgm.md
  zh: https://steelequivalents.com/zh/材料/pn/18hgm.md
  ja: https://steelequivalents.com/ja/材料/pn/18hgm.md
  ar: https://steelequivalents.com/ar/المواد/pn/18hgm.md
  ko: https://steelequivalents.com/ko/재료/pn/18hgm.md
  pt-br: https://steelequivalents.com/pt-br/materiais/pn/18hgm.md
  hi: https://steelequivalents.com/hi/सामग्री/pn/18hgm.md
content_hash: sha256:dfb88e491192838c7605e3f22b5ac806d6b634a8bce5494522b609becc4712f2
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/pn/18hgm
> Canonical URL: https://steelequivalents.com/materials/pn/18hgm
> 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.

PN · Poland · 4 grades

# 18HGM

The designation 18HGM is carried by 4 different grades. Compare them on the elements that actually differ, then open the one your print means.

- *Matching grades* **4**
- [*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")
- [*Category* **Case hardening steels · 60 grades**](/categories/case-hardening-steels "Category: Case hardening steels · 60 grades")

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

## Which of the 4 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% | Mo% | Si% | P% | S% | Cr% |
|---|---|---|---|---|---|---|---|---|---|
| [15CrMo4](/materials/din-en/15crmo4 "15CrMo4") | [1.3566](/materials/material-no/1.3566 "1.3566") 1.3 | [Others](/categories/others "Others") | 13 | 0,12-0,18 | 0,15-0,25 | ≤0,40 | 0,025 | 0,015 | 0,90-1,20 |
| [1.7218](/materials/material-no/1.7218 "1.7218") | [1.7218](/materials/material-no/1.7218 "1.7218") 1.7 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 111 | 0,22-0,29 | 0,15-0,30 | ≤0,40 | 0,025 | 0,035 | 0,90-1,20 |
| [18CrMo4](/materials/din-en/18crmo4 "18CrMo4") | [1.7243](/materials/material-no/1.7243 "1.7243") 1.7 | [Case hardening steels](/categories/case-hardening-steels "Case hardening steels") | 23 | 0,15-0,21 | 0,15-0,25 | ≤0,40 | 0,025 | 0,035 | 0,90-1,20 |
| [1.7262](/materials/material-no/1.7262 "1.7262") | [1.7262](/materials/material-no/1.7262 "1.7262") 1.7 | [Case hardening steels](/categories/case-hardening-steels "Case hardening steels") | 63 | 0,13-0,17 | 0,20-0,30 | 0,15-0,35 | 0,035 | 0,035 | 1,00-1,30 |

## 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")
