304L vs X5CrNi18-10: 90% composition overlap. Very similar materials, likely interchangeable for most applications.
304L vs X5CrNi18-10
Side-by-side chemical composition and mechanical property comparison.
Overview
304L
1.4307
Low-carbon version of 304. Maximum 0.030% C prevents sensitization during welding — no post-weld heat treatment needed. The standard choice for welded structures in food, chemical, and pharmaceutical industries. Often dual-certified with 1.4301.
X5CrNi18-10
1.4301
THE most widely used stainless steel worldwide — the original "18/8" austenitic (V2A). Good corrosion resistance in natural environments (water, humidity, weak acids). Non-magnetic when annealed. NOT resistant to intergranular corrosion after welding — use 1.4307 (304L) or 1.4541 (321) for welded service. PREN 17.5-21.1 — not suitable for chloride/seawater. Used everywhere: kitchen equipment, food processing, architecture, chemical tanks, automotive, medical devices.
| 304L | X5CrNi18-10 | |
|---|---|---|
| Material Number | 1.4307 | 1.4301 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-3 |
Chemical composition (wt%)
| Element | 304L | X5CrNi18-10 | Overlap |
|---|---|---|---|
| C | 0–0.03% | 0–0.07% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | 0–0.045% | OK |
Mechanical properties
| Property | 304L | X5CrNi18-10 | Unit |
|---|---|---|---|
| tensile_strength | 500–700 | 500–700 | MPa |
| yield_strength | ≥ 200 | ≥ 190 | MPa |
| elongation | ≥ 45 | ≥ 45 | % |
Compatibility Assessment
304L and X5CrNi18-10 have very similar compositions (90% overlap) and are likely interchangeable for most applications. Verify mechanical properties for your specific use case.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 304L the same as X5CrNi18-10?
304L and X5CrNi18-10 have a 90% composition overlap. For most purposes, they can be considered similar.
Can I replace 304L with X5CrNi18-10?
In many cases, yes. The compositions overlap significantly (90%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between 304L and X5CrNi18-10?
The main differences are in the following elements: overall alloying content. 304L is a Stainless Steel grade, while X5CrNi18-10 is a Stainless Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.