301 vs 304L: 66% composition overlap. Moderate differences, generally not direct substitutes.
301 vs 304L
Side-by-side chemical composition and mechanical property comparison.
Overview
301
1.4310
Austenitic stainless steel with the highest work-hardening rate of all 300-series grades. Lower Cr and Ni (17/7 vs 18/9 for 304) makes it metastable — cold working induces martensite transformation for extreme strength (UTS >1300 MPa in full-hard temper). THE stainless spring steel. Used for stainless springs, washers, clips, structural components requiring high strength + corrosion resistance, and railway car bodies.
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.
| 301 | 304L | |
|---|---|---|
| Material Number | 1.4310 | 1.4307 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 301 | 304L | Overlap |
|---|---|---|---|
| C | 0.05–0.15% | 0–0.03% | No overlap |
| Si | 0–2% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | 0–0.045% | OK |
Mechanical properties
| Property | 301 | 304L | Unit |
|---|---|---|---|
| tensile_strength | 520–720 | 500–700 | MPa |
| yield_strength | ≥ 205 | ≥ 200 | MPa |
| elongation | ≥ 45 | ≥ 45 | % |
Compatibility Assessment
301 and 304L 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 301 the same as 304L?
301 and 304L have a 66% composition overlap. They are generally not directly interchangeable.
Can I replace 301 with 304L?
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 301 and 304L?
The main differences are in the following elements: C, Cr, Ni. 301 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.