304L vs 316L: 66% composition overlap. Moderate differences, generally not direct substitutes.
304L vs 316L
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.
316L
1.4404
Low-carbon austenitic stainless steel with molybdenum addition. Superior corrosion resistance to 304, especially against chlorides and pitting. Standard choice for chemical processing, marine, medical implants, and pharmaceutical equipment.
| 304L | 316L | |
|---|---|---|
| Material Number | 1.4307 | 1.4404 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 304L | 316L | Overlap |
|---|---|---|---|
| C | 0–0.03% | 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 | 304L | 316L | Unit |
|---|---|---|---|
| tensile_strength | 500–700 | 520–680 | MPa |
| yield_strength | ≥ 200 | ≥ 220 | MPa |
| elongation | ≥ 45 | ≥ 40 | % |
Compatibility Assessment
304L and 316L have moderate differences (66% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 304L the same as 316L?
304L and 316L have a 66% composition overlap. They are generally not directly interchangeable.
Can I replace 304L with 316L?
Generally not recommended. The compositions differ significantly (66% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 304L and 316L?
The main differences are in the following elements: Cr, Ni. 304L is a Stainless Steel grade, while 316L 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.