304 / X5CrNi18-10 vs 304L: 90% composition overlap. Very similar materials, likely interchangeable for most applications.
304 / X5CrNi18-10 vs 304L
Side-by-side chemical composition and mechanical property comparison.
Overview
304 / X5CrNi18-10
1.4301
The world's most widely used stainless steel — the original 18/8 austenitic. Good corrosion resistance in atmospheric, organic, and inorganic environments. Excellent formability and weldability. Not recommended for chloride-rich or marine environments (use 316L). Used in food processing, kitchen equipment, architecture, tanks, and general engineering.
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.
| 304 / X5CrNi18-10 | 304L | |
|---|---|---|
| Material Number | 1.4301 | 1.4307 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 304 / X5CrNi18-10 | 304L | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | 0–0.045% | OK |
Mechanical properties
| Property | 304 / X5CrNi18-10 | 304L | Unit |
|---|---|---|---|
| tensile_strength | 500–700 | 500–700 | MPa |
| yield_strength | ≥ 190 | ≥ 200 | MPa |
| elongation | ≥ 45 | ≥ 45 | % |
Compatibility Assessment
304 / X5CrNi18-10 and 304L 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 304 / X5CrNi18-10 the same as 304L?
304 / X5CrNi18-10 and 304L have a 90% composition overlap. For most purposes, they can be considered similar.
Can I replace 304 / X5CrNi18-10 with 304L?
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 304 / X5CrNi18-10 and 304L?
The main differences are in the following elements: overall alloying content. 304 / X5CrNi18-10 is a Stainless Steel grade, while 304L 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.