---
title: "51409 — 2 equivalent grades, compared"
description: "The designation 51409 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/aisi-sae/51409
language: en
robots: index, follow
og_type: website
type: material-detail
language_alternates:
  en: https://steelequivalents.com/materials/aisi-sae/51409.md
  cs: https://steelequivalents.com/cs/materiály/aisi-sae/51409.md
  de: https://steelequivalents.com/de/werkstoffe/aisi-sae/51409.md
  es: https://steelequivalents.com/es/materiales/aisi-sae/51409.md
  fr: https://steelequivalents.com/fr/matériaux/aisi-sae/51409.md
  hu: https://steelequivalents.com/hu/anyagok/aisi-sae/51409.md
  it: https://steelequivalents.com/it/materiali/aisi-sae/51409.md
  nl: https://steelequivalents.com/nl/materialen/aisi-sae/51409.md
  pl: https://steelequivalents.com/pl/materiały/aisi-sae/51409.md
  pt: https://steelequivalents.com/pt/materiais/aisi-sae/51409.md
  ru: https://steelequivalents.com/ru/материалы/aisi-sae/51409.md
  tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/51409.md
  zh: https://steelequivalents.com/zh/材料/aisi-sae/51409.md
  ja: https://steelequivalents.com/ja/材料/aisi-sae/51409.md
  ar: https://steelequivalents.com/ar/المواد/aisi-sae/51409.md
  ko: https://steelequivalents.com/ko/재료/aisi-sae/51409.md
  pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/51409.md
  hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/51409.md
content_hash: sha256:dfee4f902cbd7b8ec60ea412e4ff4f6e50f768fedd39332a1384bae15cbd2402
generated: 2026-09-24
---

> **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/aisi-sae/51409
> Canonical URL: https://steelequivalents.com/materials/aisi-sae/51409
> 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.

AISI / SAE · United States · 2 grades

# 51409

The designation 51409 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* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades")
- [*Category* **Heat resistant steels · 64 grades**](/categories/heat-resistant-steels "Category: Heat resistant steels · 64 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% | S% |
|---|---|---|---|---|---|
| [X2CrTi12](/materials/din-en/x2crti12 "X2CrTi12") | [1.4512](/materials/material-no/1.4512 "1.4512") 1.4 | [Stainless steels](/categories/stainless-steels "Stainless steels") | 27 | ≤0,03 | 0,015 |
| [X2CrTi12](/materials/din-en/x2crti12 "X2CrTi12") | [1.4720](/materials/material-no/1.4720 "1.4720") 1.4 | [Heat resistant steels](/categories/heat-resistant-steels "Heat resistant steels") | 12 | ≤0,08 | 0,03 |

## 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")