304L vs X2CrNiN18-7: 59% composition overlap. Moderate differences, generally not direct substitutes.
304L vs X2CrNiN18-7
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.
X2CrNiN18-7
1.4318
Nitrogen-alloyed work-hardening austenitic — AISI 301LN. Lower Ni (6-8%) than 304 makes it metastable: cold work transforms austenite to martensite → UTS up to 1400 MPa in full-hard condition. N addition compensates low C for corrosion and strength. Used for rail car bodies, springs, structural parts requiring high strength-to-weight ratio, and architectural cladding.
| 304L | X2CrNiN18-7 | |
|---|---|---|
| Material Number | 1.4307 | 1.4318 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 304L | X2CrNiN18-7 | 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% | — | — |
Mechanical properties
| Property | 304L | X2CrNiN18-7 | Unit |
|---|---|---|---|
| tensile_strength | 500–700 | 550–750 | MPa |
| yield_strength | ≥ 200 | ≥ 250 | MPa |
| elongation | ≥ 45 | ≥ 40 | % |
Compatibility Assessment
304L and X2CrNiN18-7 have moderate differences (59% 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 X2CrNiN18-7?
304L and X2CrNiN18-7 have a 59% composition overlap. They are generally not directly interchangeable.
Can I replace 304L with X2CrNiN18-7?
Generally not recommended. The compositions differ significantly (59% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 304L and X2CrNiN18-7?
The main differences are in the following elements: Cr, Ni, N. 304L is a Stainless Steel grade, while X2CrNiN18-7 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.